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  1. #include <bits/stdc++.h>
  2. #include <ext/pb_ds/assoc_container.hpp>
  3. #include <ext/pb_ds/tree_policy.hpp>
  4.  
  5. using namespace std;
  6. using namespace __gnu_pbds;
  7.  
  8. typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> order_set;
  9.  
  10. order_set X;
  11.  
  12. int get(int y)
  13. {
  14.     int l=0,r=1e9+1;
  15.     while(l<r)
  16.     {
  17.         int m=l+((r-l)>>1);
  18.         if(m-X.order_of_key(m+1)<y)
  19.             l=m+1;
  20.         else
  21.             r=m;
  22.     }
  23.     return l;
  24. }
  25.  
  26. main()
  27.  {
  28.     ios::sync_with_stdio(0);
  29.     cin.tie(0);
  30.     int n,m;
  31.     cin>>n>>m;
  32.  
  33.     for(int i=0;i<m;i++)
  34.     {
  35.         char a;
  36.         int b;
  37.         cin>>a>>b;
  38.         if(a=='L')
  39.             cout<<get(b)<<endl;
  40.         else
  41.             X.insert(get(b));
  42.     }
  43.  }
Success #stdin #stdout 0s 3476KB
comments (?)
stdin
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20 7
L 5
D 5
L 4
L 5
D 5
L 4
L 5
stdout
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5
4
6
4
7
https://ideone.com/SOg974
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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