fork download

copy

#include <bits/stdc++.h>
#include <algorithm> 
#include <cmath>
#include <vector>
#include <utility>
#include <set>
using namespace std;
vector< pair<int,int> > a;
long long n,d,b[100000+100],res,kq,k;
void Bs(int l,int r,int x){
    while (l<=r){
        long long mid = (l+r)/2;
        if (a[mid].first<=x) l = mid + 1;
        else r = mid - 1;
        kq = min(kq,mid);
    }
}
int main(){
    cin >> n >> d;
    for (int i=1;i<=n;i++){
        int u,v;
        cin >> u >> v;
        a.push_back(make_pair(u,v));
    }
    sort(a.begin(),a.end());
    for(int i=0;i<a.size();i++) b[i+1] = b[i]+a[i].second;
    for (int i=0;i<a.size();i++){
        kq = 1000000000;
        k = upper_bound(a.begin(),a.end(),a[i].first+d) - a.begin();
        cout << k-1 << endl;
    }
    cout << res;
    return 0;
}

In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h: In instantiation of ‘bool __gnu_cxx::__ops::_Val_less_iter::operator()(_Value&, _Iterator) const [with _Value = const long long int; _Iterator = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >]’:
/usr/include/c++/8/bits/stl_algo.h:2052:14:   required from ‘_ForwardIterator std::__upper_bound(_ForwardIterator, _ForwardIterator, const _Tp&, _Compare) [with _ForwardIterator = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _Tp = long long int; _Compare = __gnu_cxx::__ops::_Val_less_iter]’
/usr/include/c++/8/bits/stl_algo.h:2086:32:   required from ‘_FIter std::upper_bound(_FIter, _FIter, const _Tp&) [with _FIter = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _Tp = long long int]’
prog.cpp:29:55:   required from here
/usr/include/c++/8/bits/predefined_ops.h:90:22: error: no match for ‘operator<’ (operand types are ‘const long long int’ and ‘std::pair<int, int>’)
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/stl_algobase.h:67,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_iterator.h:892:5: note: candidate: ‘template<class _IteratorL, class _IteratorR, class _Container> bool __gnu_cxx::operator<(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)’
     operator<(const __normal_iterator<_IteratorL, _Container>& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_iterator.h:892:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const __gnu_cxx::__normal_iterator<_IteratorL, _Container>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/stl_algobase.h:67,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_iterator.h:899:5: note: candidate: ‘template<class _Iterator, class _Container> bool __gnu_cxx::operator<(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)’
     operator<(const __normal_iterator<_Iterator, _Container>& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_iterator.h:899:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const __gnu_cxx::__normal_iterator<_Iterator, _Container>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:110,
                 from prog.cpp:1:
/usr/include/c++/8/bits/regex.h:1002:5: note: candidate: ‘template<class _BiIter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)’
     operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
     ^~~~~~~~
/usr/include/c++/8/bits/regex.h:1002:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:110,
                 from prog.cpp:1:
/usr/include/c++/8/bits/regex.h:1081:5: note: candidate: ‘template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)’
     operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/regex.h:1081:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:110,
                 from prog.cpp:1:
/usr/include/c++/8/bits/regex.h:1161:5: note: candidate: ‘template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)’
     operator<(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/regex.h:1161:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:110,
                 from prog.cpp:1:
/usr/include/c++/8/bits/regex.h:1238:5: note: candidate: ‘template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)’
     operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/regex.h:1238:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   ‘std::pair<int, int>’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:110,
                 from prog.cpp:1:
/usr/include/c++/8/bits/regex.h:1312:5: note: candidate: ‘template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)’
     operator<(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/regex.h:1312:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:110,
                 from prog.cpp:1:
/usr/include/c++/8/bits/regex.h:1389:5: note: candidate: ‘template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)’
     operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/regex.h:1389:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   ‘std::pair<int, int>’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:110,
                 from prog.cpp:1:
/usr/include/c++/8/bits/regex.h:1469:5: note: candidate: ‘template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)’
     operator<(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/regex.h:1469:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/stl_algobase.h:64,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_pair.h:454:5: note: candidate: ‘template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)’
     operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
     ^~~~~~~~
/usr/include/c++/8/bits/stl_pair.h:454:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::pair<_T1, _T2>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/stl_algobase.h:67,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_iterator.h:308:5: note: candidate: ‘template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)’
     operator<(const reverse_iterator<_Iterator>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_iterator.h:308:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::reverse_iterator<_Iterator>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/stl_algobase.h:67,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_iterator.h:346:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)’
     operator<(const reverse_iterator<_IteratorL>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_iterator.h:346:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::reverse_iterator<_Iterator>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/stl_algobase.h:67,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_iterator.h:1139:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)’
     operator<(const move_iterator<_IteratorL>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_iterator.h:1139:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::move_iterator<_IteratorL>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/stl_algobase.h:67,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_iterator.h:1145:5: note: candidate: ‘template<class _Iterator> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)’
     operator<(const move_iterator<_Iterator>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_iterator.h:1145:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::move_iterator<_IteratorL>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/string:52,
                 from /usr/include/c++/8/bits/locale_classes.h:40,
                 from /usr/include/c++/8/bits/ios_base.h:41,
                 from /usr/include/c++/8/ios:42,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/basic_string.h:6133:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/basic_string.h:6133:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/string:52,
                 from /usr/include/c++/8/bits/locale_classes.h:40,
                 from /usr/include/c++/8/bits/ios_base.h:41,
                 from /usr/include/c++/8/ios:42,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/basic_string.h:6146:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)’
     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/basic_string.h:6146:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/string:52,
                 from /usr/include/c++/8/bits/locale_classes.h:40,
                 from /usr/include/c++/8/bits/ios_base.h:41,
                 from /usr/include/c++/8/ios:42,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/basic_string.h:6158:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
     operator<(const _CharT* __lhs,
     ^~~~~~~~
/usr/include/c++/8/bits/basic_string.h:6158:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const _CharT*’ and ‘long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/ios_base.h:46,
                 from /usr/include/c++/8/ios:42,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/system_error:208:3: note: candidate: ‘bool std::operator<(const std::error_code&, const std::error_code&)’
   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/8/system_error:208:3: note:   no known conversion for argument 1 from ‘const long long int’ to ‘const std::error_code&’
/usr/include/c++/8/system_error:282:3: note: candidate: ‘bool std::operator<(const std::error_condition&, const std::error_condition&)’
   operator<(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/8/system_error:282:3: note:   no known conversion for argument 1 from ‘const long long int’ to ‘const std::error_condition&’
In file included from /usr/include/c++/8/deque:64,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:68,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_deque.h:294:5: note: candidate: ‘template<class _Tp, class _Ref, class _Ptr> bool std::operator<(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)’
     operator<(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_deque.h:294:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::_Deque_iterator<_Tp, _Ref, _Ptr>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/deque:64,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:68,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_deque.h:302:5: note: candidate: ‘template<class _Tp, class _RefL, class _PtrL, class _RefR, class _PtrR> bool std::operator<(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)’
     operator<(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_deque.h:302:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::_Deque_iterator<_Tp, _Ref, _Ptr>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/deque:64,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:68,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_deque.h:2295:5: note: candidate: ‘template<class _Tp, class _Alloc> bool std::operator<(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)’
     operator<(const deque<_Tp, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_deque.h:2295:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::deque<_Tp, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/tuple:39,
                 from /usr/include/c++/8/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:71,
                 from prog.cpp:1:
/usr/include/c++/8/array:262:5: note: candidate: ‘template<class _Tp, long unsigned int _Nm> bool std::operator<(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)’
     operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
     ^~~~~~~~
/usr/include/c++/8/array:262:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::array<_Tp, _Nm>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:71,
                 from prog.cpp:1:
/usr/include/c++/8/tuple:1426:5: note: candidate: ‘template<class ... _TElements, class ... _UElements> constexpr bool std::operator<(const std::tuple<_Tps ...>&, const std::tuple<_Elements ...>&)’
     operator<(const tuple<_TElements...>& __t,
     ^~~~~~~~
/usr/include/c++/8/tuple:1426:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::tuple<_Tps ...>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/locale_conv.h:41,
                 from /usr/include/c++/8/locale:43,
                 from /usr/include/c++/8/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:72,
                 from prog.cpp:1:
/usr/include/c++/8/bits/unique_ptr.h:723:5: note: candidate: ‘template<class _Tp, class _Dp, class _Up, class _Ep> bool std::operator<(const std::unique_ptr<_Tp, _Dp>&, const std::unique_ptr<_Up, _Ep>&)’
     operator<(const unique_ptr<_Tp, _Dp>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/unique_ptr.h:723:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::unique_ptr<_Tp, _Dp>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/locale_conv.h:41,
                 from /usr/include/c++/8/locale:43,
                 from /usr/include/c++/8/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:72,
                 from prog.cpp:1:
/usr/include/c++/8/bits/unique_ptr.h:734:5: note: candidate: ‘template<class _Tp, class _Dp> bool std::operator<(const std::unique_ptr<_Tp, _Dp>&, std::nullptr_t)’
     operator<(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
     ^~~~~~~~
/usr/include/c++/8/bits/unique_ptr.h:734:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::unique_ptr<_Tp, _Dp>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/locale_conv.h:41,
                 from /usr/include/c++/8/locale:43,
                 from /usr/include/c++/8/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:72,
                 from prog.cpp:1:
/usr/include/c++/8/bits/unique_ptr.h:740:5: note: candidate: ‘template<class _Tp, class _Dp> bool std::operator<(std::nullptr_t, const std::unique_ptr<_Tp, _Dp>&)’
     operator<(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
     ^~~~~~~~
/usr/include/c++/8/bits/unique_ptr.h:740:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   ‘std::pair<int, int>’ is not derived from ‘const std::unique_ptr<_Tp, _Dp>’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/list:63,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:79,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_list.h:2021:5: note: candidate: ‘template<class _Tp, class _Alloc> bool std::operator<(const std::__cxx11::list<_Tp, _Alloc>&, const std::__cxx11::list<_Tp, _Alloc>&)’
     operator<(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
     ^~~~~~~~
/usr/include/c++/8/bits/stl_list.h:2021:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__cxx11::list<_Tp, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/map:60,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:81,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_tree.h:1559:5: note: candidate: ‘template<class _Key, class _Val, class _KeyOfValue, class _Compare, class _Alloc> bool std::operator<(const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&, const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&)’
     operator<(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_tree.h:1559:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/map:61,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:81,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_map.h:1451:5: note: candidate: ‘template<class _Key, class _Tp, class _Compare, class _Alloc> bool std::operator<(const std::map<_Key, _Tp, _Compare, _Alloc>&, const std::map<_Key, _Tp, _Compare, _Alloc>&)’
     operator<(const map<_Key, _Tp, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_map.h:1451:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::map<_Key, _Tp, _Compare, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/map:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:81,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_multimap.h:1115:5: note: candidate: ‘template<class _Key, class _Tp, class _Compare, class _Alloc> bool std::operator<(const std::multimap<_Key, _Tp, _Compare, _Alloc>&, const std::multimap<_Key, _Tp, _Compare, _Alloc>&)’
     operator<(const multimap<_Key, _Tp, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_multimap.h:1115:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::multimap<_Key, _Tp, _Compare, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/shared_ptr.h:52,
                 from /usr/include/c++/8/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:82,
                 from prog.cpp:1:
/usr/include/c++/8/bits/shared_ptr_base.h:1442:5: note: candidate: ‘template<class _Tp, class _Up, __gnu_cxx::_Lock_policy _Lp> bool std::operator<(const std::__shared_ptr<_Tp1, _Lp>&, const std::__shared_ptr<_Tp2, _Lp>&)’
     operator<(const __shared_ptr<_Tp, _Lp>& __a,
     ^~~~~~~~
/usr/include/c++/8/bits/shared_ptr_base.h:1442:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__shared_ptr<_Tp1, _Lp>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/shared_ptr.h:52,
                 from /usr/include/c++/8/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:82,
                 from prog.cpp:1:
/usr/include/c++/8/bits/shared_ptr_base.h:1453:5: note: candidate: ‘template<class _Tp, __gnu_cxx::_Lock_policy _Lp> bool std::operator<(const std::__shared_ptr<_Tp, _Lp>&, std::nullptr_t)’
     operator<(const __shared_ptr<_Tp, _Lp>& __a, nullptr_t) noexcept
     ^~~~~~~~
/usr/include/c++/8/bits/shared_ptr_base.h:1453:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/bits/shared_ptr.h:52,
                 from /usr/include/c++/8/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:82,
                 from prog.cpp:1:
/usr/include/c++/8/bits/shared_ptr_base.h:1461:5: note: candidate: ‘template<class _Tp, __gnu_cxx::_Lock_policy _Lp> bool std::operator<(std::nullptr_t, const std::__shared_ptr<_Tp, _Lp>&)’
     operator<(nullptr_t, const __shared_ptr<_Tp, _Lp>& __a) noexcept
     ^~~~~~~~
/usr/include/c++/8/bits/shared_ptr_base.h:1461:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   ‘std::pair<int, int>’ is not derived from ‘const std::__shared_ptr<_Tp, _Lp>’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:82,
                 from prog.cpp:1:
/usr/include/c++/8/bits/shared_ptr.h:413:5: note: candidate: ‘template<class _Tp, class _Up> bool std::operator<(const std::shared_ptr<_Tp>&, const std::shared_ptr<_Tp>&)’
     operator<(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
     ^~~~~~~~
/usr/include/c++/8/bits/shared_ptr.h:413:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::shared_ptr<_Tp>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:82,
                 from prog.cpp:1:
/usr/include/c++/8/bits/shared_ptr.h:423:5: note: candidate: ‘template<class _Tp> bool std::operator<(const std::shared_ptr<_Tp>&, std::nullptr_t)’
     operator<(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
     ^~~~~~~~
/usr/include/c++/8/bits/shared_ptr.h:423:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::shared_ptr<_Tp>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:82,
                 from prog.cpp:1:
/usr/include/c++/8/bits/shared_ptr.h:431:5: note: candidate: ‘template<class _Tp> bool std::operator<(std::nullptr_t, const std::shared_ptr<_Tp>&)’
     operator<(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
     ^~~~~~~~
/usr/include/c++/8/bits/shared_ptr.h:431:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   ‘std::pair<int, int>’ is not derived from ‘const std::shared_ptr<_Tp>’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/vector:64,
                 from /usr/include/c++/8/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:86,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_vector.h:1770:5: note: candidate: ‘template<class _Tp, class _Alloc> bool std::operator<(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)’
     operator<(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
     ^~~~~~~~
/usr/include/c++/8/bits/stl_vector.h:1770:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::vector<_Tp, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/queue:64,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:86,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_queue.h:348:5: note: candidate: ‘template<class _Tp, class _Seq> bool std::operator<(const std::queue<_Tp, _Seq>&, const std::queue<_Tp, _Seq>&)’
     operator<(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y)
     ^~~~~~~~
/usr/include/c++/8/bits/stl_queue.h:348:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::queue<_Tp, _Seq>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/set:61,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:87,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_set.h:975:5: note: candidate: ‘template<class _Key, class _Compare, class _Alloc> bool std::operator<(const std::set<_Key, _Compare, _Alloc>&, const std::set<_Key, _Compare, _Alloc>&)’
     operator<(const set<_Key, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_set.h:975:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::set<_Key, _Compare, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/set:62,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:87,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_multiset.h:960:5: note: candidate: ‘template<class _Key, class _Compare, class _Alloc> bool std::operator<(const std::multiset<_Key, _Compare, _Alloc>&, const std::multiset<_Key, _Compare, _Alloc>&)’
     operator<(const multiset<_Key, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/8/bits/stl_multiset.h:960:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::multiset<_Key, _Compare, _Alloc>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/stack:61,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:89,
                 from prog.cpp:1:
/usr/include/c++/8/bits/stl_stack.h:323:5: note: candidate: ‘template<class _Tp, class _Seq> bool std::operator<(const std::stack<_Tp, _Seq>&, const std::stack<_Tp, _Seq>&)’
     operator<(const stack<_Tp, _Seq>& __x, const stack<_Tp, _Seq>& __y)
     ^~~~~~~~
/usr/include/c++/8/bits/stl_stack.h:323:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::stack<_Tp, _Seq>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/valarray:592,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:95,
                 from prog.cpp:1:
/usr/include/c++/8/bits/valarray_after.h:416:5: note: candidate: ‘template<class _Dom1, class _Dom2> std::_Expr<std::_BinClos<std::__less, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)’
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/valarray:592,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:95,
                 from prog.cpp:1:
/usr/include/c++/8/bits/valarray_after.h:416:5: note: candidate: ‘template<class _Dom> std::_Expr<std::_BinClos<std::__less, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)’
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/valarray:592,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:95,
                 from prog.cpp:1:
/usr/include/c++/8/bits/valarray_after.h:416:5: note: candidate: ‘template<class _Dom> std::_Expr<std::_BinClos<std::__less, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)’
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   ‘std::pair<int, int>’ is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/valarray:592,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:95,
                 from prog.cpp:1:
/usr/include/c++/8/bits/valarray_after.h:416:5: note: candidate: ‘template<class _Dom> std::_Expr<std::_BinClos<std::__less, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)’
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘const long long int’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/c++/8/valarray:592,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:95,
                 from prog.cpp:1:
/usr/include/c++/8/bits/valarray_after.h:416:5: note: candidate: ‘template<class _Dom> std::_Expr<std::_BinClos<std::__less, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)’
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
                 from /usr/include/c++/8/complex:45,
                 from /usr/include/c++/8/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:52,
                 from prog.cpp:1:
/usr/include/c++/8/bits/predefined_ops.h:90:22: note:   ‘std::pair<int, int>’ is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
       { return __val < *__it; }
                ~~~~~~^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/8/bits/stdc++.h:95,
                 from prog.cpp:1:
/usr/include/c++/8/valarray:1186:1: note: candidate: ‘template<class _Tp> std::_Expr<std::_BinClos<std::__less, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__less, _Tp>::result_type> std::operator<(const std::valarray<_Tp>&, const std::valarray<_Tp>&)’
 _DEFINE_BINARY_OPERATOR(<, __less)
 ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/8/valarray:1186:1: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/8/bits/stl_algobase.h:71,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/istream:38,
                 from /usr/include/c++/8/sstream:38,
 

Standard output is empty