#include <bits/stdc++.h> using namespace std; using ll = long long; using db = long double; // or double, if TL is tight using str = string; // yay python! using pi = pair<int,int>; using pl = pair<ll,ll>; using pd = pair<db,db>; using vi = vector<int>; using vb = vector<bool>; using vl = vector<ll>; using vd = vector<db>; using vs = vector<str>; using vpi = vector<pi>; using vpl = vector<pl>; using vpd = vector<pd>; #define tcT template<class T #define tcTU tcT, class U // ^ lol this makes everything look weird but I'll try it tcT> using V = vector<T>; tcT, size_t SZ> using AR = array<T,SZ>; tcT> using PR = pair<T,T>; // pairs #define mp make_pair #define f first #define s second // vectors // oops size(x), rbegin(x), rend(x) need C++17 #define sz(x) int((x).size()) #define bg(x) begin(x) #define all(x) bg(x), end(x) #define rall(x) x.rbegin(), x.rend() #define sor(x) sort(all(x)) #define rsz resize #define ins insert #define ft front() #define bk back() #define pb push_back #define eb emplace_back #define pf push_front #define rtn return #define lb lower_bound #define ub upper_bound tcT> int lwb(V<T>& a, const T& b) { return int(lb(all(a),b)-bg(a)); } // loops #define FOR(i,a,b) for (int i = (a); i < (b); ++i) #define F0R(i,a) FOR(i,0,a) #define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i) #define R0F(i,a) ROF(i,0,a) #define rep(a) F0R(_,a) #define each(a,x) for (auto& a: x) const int MOD = 1e9+7; // 998244353; const int MX = 2e5+5; const ll INF = 1e18; // not too close to LLONG_MAX const db PI = acos((db)-1); const int dx[4] = {1,0,-1,0}, dy[4] = {0,1,0,-1}; // for every grid problem!! mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count()); template<class T> using pqg = priority_queue<T,vector<T>,greater<T>>; // bitwise ops // also see https://g...content-available-to-author-only...u.org/onlinedocs/gcc/Other-Builtins.html constexpr int pct(int x) { return __builtin_popcount(x); } // # of bits set constexpr int bits(int x) { // assert(x >= 0); // make C++11 compatible until USACO updates ... return x == 0 ? 0 : 31-__builtin_clz(x); } // floor(log2(x)) constexpr int p2(int x) { return 1<<x; } constexpr int msk2(int x) { return p2(x)-1; } ll cdiv(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded up ll fdiv(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded down tcT> bool ckmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; } // set a = min(a,b) tcT> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; } tcTU> T fstTrue(T lo, T hi, U f) { hi ++; assert(lo <= hi); // assuming f is increasing while (lo < hi) { // find first index such that f is true T mid = lo+(hi-lo)/2; f(mid) ? hi = mid : lo = mid+1; } return lo; } tcTU> T lstTrue(T lo, T hi, U f) { lo --; assert(lo <= hi); // assuming f is decreasing while (lo < hi) { // find first index such that f is true T mid = lo+(hi-lo+1)/2; f(mid) ? lo = mid : hi = mid-1; } return lo; } tcT> void remDup(vector<T>& v) { // sort and remove duplicates sort(all(v)); v.erase(unique(all(v)),end(v)); } tcTU> void erase(T& t, const U& u) { // don't erase auto it = t.find(u); assert(it != end(t)); t.erase(it); } // element that doesn't exist from (multi)set #define tcTUU tcT, class ...U inline namespace Helpers { //////////// is_iterable // https://stackoverflow.com/questions/13830158/check-if-a-variable-type-is-iterable // this gets used only when we can call begin() and end() on that type tcT, class = void> struct is_iterable : false_type {}; tcT> struct is_iterable<T, void_t<decltype(begin(declval<T>())), decltype(end(declval<T>())) > > : true_type {}; tcT> constexpr bool is_iterable_v = is_iterable<T>::value; //////////// is_readable tcT, class = void> struct is_readable : false_type {}; tcT> struct is_readable<T, typename std::enable_if_t< is_same_v<decltype(cin >> declval<T&>()), istream&> > > : true_type {}; tcT> constexpr bool is_readable_v = is_readable<T>::value; //////////// is_printable // // https://n...content-available-to-author-only...e.es/posts/2020-02-29-is-printable/ tcT, class = void> struct is_printable : false_type {}; tcT> struct is_printable<T, typename std::enable_if_t< is_same_v<decltype(cout << declval<T>()), ostream&> > > : true_type {}; tcT> constexpr bool is_printable_v = is_printable<T>::value; } inline namespace Input { tcT> constexpr bool needs_input_v = !is_readable_v<T> && is_iterable_v<T>; tcTUU> void re(T& t, U&... u); tcTU> void re(pair<T,U>& p); // pairs // re: read tcT> typename enable_if<is_readable_v<T>,void>::type re(T& x) { cin >> x; } // default tcT> void re(complex<T>& c) { T a,b; re(a,b); c = {a,b}; } // complex tcT> typename enable_if<needs_input_v<T>,void>::type re(T& i); // ex. vectors, arrays tcTU> void re(pair<T,U>& p) { re(p.f,p.s); } tcT> typename enable_if<needs_input_v<T>,void>::type re(T& i) { each(x,i) re(x); } tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple // rv: resize and read vectors void rv(size_t) {} tcTUU> void rv(size_t N, V<T>& t, U&... u); template<class...U> void rv(size_t, size_t N2, U&... u); tcTUU> void rv(size_t N, V<T>& t, U&... u) { t.rsz(N); re(t); rv(N,u...); } template<class...U> void rv(size_t, size_t N2, U&... u) { rv(N2,u...); } // dumb shortcuts to read in ints void decrement() {} // subtract one from each tcTUU> void decrement(T& t, U&... u) { --t; decrement(u...); } #define ints(...) int __VA_ARGS__; re(__VA_ARGS__); #define int1(...) ints(__VA_ARGS__); decrement(__VA_ARGS__); } inline namespace ToString { tcT> constexpr bool needs_output_v = !is_printable_v<T> && is_iterable_v<T>; // ts: string representation to print tcT> typename enable_if<is_printable_v<T>,str>::type ts(T v) { stringstream ss; ss << fixed << setprecision(15) << v; return ss.str(); } // default tcT> str bit_vec(T t) { // bit vector to string str res = "{"; F0R(i,sz(t)) res += ts(t[i]); res += "}"; return res; } str ts(V<bool> v) { return bit_vec(v); } template<size_t SZ> str ts(bitset<SZ> b) { return bit_vec(b); } // bit vector tcTU> str ts(pair<T,U> p); // pairs tcT> typename enable_if<needs_output_v<T>,str>::type ts(T v); // vectors, arrays tcTU> str ts(pair<T,U> p) { return "("+ts(p.f)+", "+ts(p.s)+")"; } tcT> typename enable_if<is_iterable_v<T>,str>::type ts_sep(T v, str sep) { // convert container to string w/ separator sep bool fst = 1; str res = ""; for (const auto& x: v) { if (!fst) res += sep; fst = 0; res += ts(x); } return res; } tcT> typename enable_if<needs_output_v<T>,str>::type ts(T v) { return "{"+ts_sep(v,", ")+"}"; } // for nested DS template<int, class T> typename enable_if<!needs_output_v<T>,vs>::type ts_lev(const T& v) { return {ts(v)}; } template<int lev, class T> typename enable_if<needs_output_v<T>,vs>::type ts_lev(const T& v) { if (lev == 0 || !sz(v)) return {ts(v)}; vs res; for (const auto& t: v) { if (sz(res)) res.bk += ","; vs tmp = ts_lev<lev-1>(t); res.ins(end(res),all(tmp)); } F0R(i,sz(res)) { str bef = " "; if (i == 0) bef = "{"; res[i] = bef+res[i]; } res.bk += "}"; return res; } } inline namespace Output { template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } template<class T, class... U> void pr_sep(ostream& os, str sep, const T& t, const U&... u) { pr_sep(os,sep,t); os << sep; pr_sep(os,sep,u...); } // print w/ no spaces template<class ...T> void pr(const T&... t) { pr_sep(cout,"",t...); } // print w/ spaces, end with newline void ps() { cout << "\n"; } template<class ...T> void ps(const T&... t) { pr_sep(cout," ",t...); ps(); } // debug to cerr template<class ...T> void dbg_out(const T&... t) { pr_sep(cerr," | ",t...); cerr << endl; } void loc_info(int line, str names) { cerr << "Line(" << line << ") -> [" << names << "]: "; } template<int lev, class T> void dbgl_out(const T& t) { cerr << "\n\n" << ts_sep(ts_lev<lev>(t),"\n") << "\n" << endl; } #ifdef LOCAL #define dbg(...) loc_info(__LINE__,#__VA_ARGS__), dbg_out(__VA_ARGS__) #define dbgl(lev,x) loc_info(__LINE__,#x), dbgl_out<lev>(x) #else // don't actually submit with this #define dbg(...) 0 #define dbgl(lev,x) 0 #endif } inline namespace FileIO { void setIn(str s) { freopen(s.c_str(),"r",stdin); } void setOut(str s) { freopen(s.c_str(),"w",stdout); } void setIO(str s = "") { cin.tie(0)->sync_with_stdio(0); // unsync C / C++ I/O streams // cin.exceptions(cin.failbit); // throws exception when do smth illegal // ex. try to read letter into int if (sz(s)) setIn(s+".in"), setOut(s+".out"); // for old USACO } } // make sure to intialize ALL GLOBAL VARS between tcs! clock_t beg = clock(); /** * Description: half-plane intersection area * Time: O(N\log N) * Source: Own * http://w...content-available-to-author-only...d.edu/class/spring2020/cmsc754/Lects/lect06-duality.pdf might be of interest * Verification: * https://o...content-available-to-author-only...s.com/problems/bigbrother * (planes through two points with integer coordinates <= 10^7) */ /** * Description: Use in place of \texttt{complex<T>}. * Source: http://c...content-available-to-author-only...s.com/blog/entry/22175, KACTL * Verification: various */ using T = db; // or long long const T EPS = 1e-12; // might want to change using P = pair<T,T>; using vP = V<P>; using Line = pair<P,P>; int sgn(T a) { return (a>EPS)-(a<-EPS); } T sq(T a) { return a*a; } bool close(const P& a, const P& b) { return sgn(a.f-b.f) == 0 && sgn(a.s-b.s) == 0; } T norm(const P& p) { return sq(p.f)+sq(p.s); } T abs(const P& p) { return sqrt(norm(p)); } T arg(const P& p) { return atan2(p.s,p.f); } P conj(const P& p) { return P(p.f,-p.s); } P perp(const P& p) { return P(-p.s,p.f); } P dir(T ang) { return P(cos(ang),sin(ang)); } P operator-(const P& l) { return P(-l.f,-l.s); } P operator+(const P& l, const P& r) { return P(l.f+r.f,l.s+r.s); } P operator-(const P& l, const P& r) { return P(l.f-r.f,l.s-r.s); } P operator*(const P& l, const T& r) { return P(l.f*r,l.s*r); } P operator*(const T& l, const P& r) { return r*l; } P operator/(const P& l, const T& r) { return P(l.f/r,l.s/r); } P operator*(const P& l, const P& r) { return P(l.f*r.f-l.s*r.s,l.s*r.f+l.f*r.s); } P operator/(const P& l, const P& r) { return l*conj(r)/norm(r); } P& operator+=(P& l, const P& r) { return l = l+r; } P& operator-=(P& l, const P& r) { return l = l-r; } P& operator*=(P& l, const T& r) { return l = l*r; } P& operator/=(P& l, const T& r) { return l = l/r; } P& operator*=(P& l, const P& r) { return l = l*r; } P& operator/=(P& l, const P& r) { return l = l/r; } P unit(const P& p) { return p/abs(p); } T dot(const P& a, const P& b) { return a.f*b.f+a.s*b.s; } T cross(const P& a, const P& b) { return a.f*b.s-a.s*b.f; } T cross(const P& p, const P& a, const P& b) { return cross(a-p,b-p); } P reflect(const P& p, const Line& l) { P a = l.f, d = l.s-l.f; return a+conj((p-a)/d)*d; } P foot(const P& p, const Line& l) { return (p+reflect(p,l))/(T)2; } bool p_on_seg(const P& p, const Line& l) { return sgn(cross(l.f,l.s,p)) == 0 && sgn(dot(p-l.f,p-l.s)) <= 0; } using Half = AR<T,3>; // half-plane using vH = V<Half>; P hp_point(const Half& h) { return {h[0],h[1]}; } // direction of half-plane P isect(const Half& h0, const Half& h1) { // Cramer's rule to intersect half-planes AR<T,3> vals; FOR(i,-1,2) { int x = (i == 0 ? 2 : 0), y = (i == 1 ? 2 : 1); vals[1+i] = h0[x]*h1[y]-h0[y]*h1[x]; } assert(vals[0] != 0); return {vals[1]/vals[0],vals[2]/vals[0]}; } T eval(const Half& h, T x) { assert(h[1] != 0); // evaluate half-plane at x-coordinate return (h[2]-h[0]*x)/h[1]; } T x_isect(const Half& h0, const Half& h1) { return isect(h0,h1).f; } // x-coordinate of intersection vH construct_lower(P x, vH planes) { // similar to convex hull (by duality) sort(all(planes),[](const Half& a, const Half& b) { return cross(hp_point(a),hp_point(b)) > 0; }); vH res{{1,0,x.f}}; // >= x.f planes.pb({-1,0,-x.s}); // <= x.s auto lst_x = [&](Half a, Half b) { if (abs(cross(hp_point(a),hp_point(b))) == 0) // parallel half-planes, remove lower one return a[2]/a[1] <= b[2]/b[1] ? x.f : x.s; return x_isect(a,b); }; each(t,planes) { while (sz(res) > 1 && lst_x(res.bk,t) <= lst_x(end(res)[-2],res.bk)) res.pop_back(); res.pb(t); } return res; } T isect_area(vH planes) { const T BIG = 1e9; P x{-BIG,BIG}; planes.pb({0,1,-BIG}); // y >= -BIG planes.pb({0,-1,-BIG}); // -y >= -BIG vH upper, lower; each(t,planes) { if (t[1] == 0) { // vertical line T quo = t[2]/t[0]; if (t[0] > 0) ckmax(x.f,quo); else ckmin(x.s,quo); // -x >= } else if (t[1] > 0) lower.pb(t); else upper.pb(t); } if (x.f >= x.s) return 0; lower = construct_lower(x,lower); each(t,upper) t[0] *= -1, t[1] *= -1; upper = construct_lower({-x.s,-x.f},upper); each(t,upper) t[0] *= -1, t[1] *= -1; reverse(all(upper)); int iu = 1, il = 1; T lst = x.f, lst_dif = eval(upper[1],lst)-eval(lower[1],lst); T ans = 0; while (iu < sz(upper)-1 && il < sz(lower)-1) { // sweep vertical line through lower and upper hulls T nex_upper = x_isect(upper[iu],upper[iu+1]); T nex_lower = x_isect(lower[il],lower[il+1]); T nex = min(nex_upper,nex_lower); T nex_dif = eval(upper[iu],nex)-eval(lower[il],nex); auto avg_val = [](T a, T b) -> T { if (a > b) swap(a,b); if (b <= 0) return 0; if (a >= 0) return (a+b)/2; return b/(b-a)*b/2; }; ans += (nex-lst)*avg_val(lst_dif,nex_dif); assert(x.f <= nex && nex <= x.s); lst = nex, lst_dif = nex_dif; iu += lst == nex_upper; il += lst == nex_lower; } return ans; } Half plane_right(P a, P b) { // half-plane to right of a -> b return {b.s-a.s,a.f-b.f,(b.s-a.s)*a.f+(a.f-b.f)*a.s}; } Half plane_through(P p, P dir) { // half-plane through p in direction dir return {dir.f,dir.s,dot(p,dir)}; } int N; void solve(int tc) { // cerr << "Doing TC #" << tc << " " << (db)(clock()-beg)/CLOCKS_PER_SEC << "\n"; re(N); vH planes; rep(N) { db m,q; re(m,q); P st = P(0,q); P dir = P(-m,1); if (dot(st,dir) > 0) { planes.pb(plane_through(st,-dir)); } else { planes.pb(plane_through(st,dir)); } } db ans = isect_area(planes); // cout << ans << "\n"; if (ans > 204098193) { // cerr << "OOPS" << scientific << ans << "\n"; cout << fixed << setprecision(15) << "inf" << "\n"; } else { cout << fixed << setprecision(15) << isect_area(planes) << "\n"; } } int main() { setIO(); int TC; re(TC); FOR(i,1,TC+1) { pr("Case #",i,": "); solve(i); } } /* stuff you should look for * int overflow, array bounds * special cases (n=1?) * do smth instead of nothing and stay organized * WRITE STUFF DOWN * DON'T GET STUCK ON ONE APPROACH */
Standard input is empty
prog.cpp:124:14: error: ‘is_same_v’ was not declared in this scope is_same_v<decltype(cin >> declval<T&>()), istream&> ^~~~~~~~~ prog.cpp:124:14: note: suggested alternative: ‘iswspace_l’ is_same_v<decltype(cin >> declval<T&>()), istream&> ^~~~~~~~~ iswspace_l prog.cpp:124:64: error: template argument 1 is invalid is_same_v<decltype(cin >> declval<T&>()), istream&> ^ prog.cpp:125:10: error: template argument 2 is invalid > ^ prog.cpp:126:6: error: expected unqualified-id before ‘>’ token > : true_type {}; ^ prog.cpp:134:14: error: ‘is_same_v’ was not declared in this scope is_same_v<decltype(cout << declval<T>()), ostream&> ^~~~~~~~~ prog.cpp:134:14: note: suggested alternative: ‘iswspace_l’ is_same_v<decltype(cout << declval<T>()), ostream&> ^~~~~~~~~ iswspace_l prog.cpp:134:64: error: template argument 1 is invalid is_same_v<decltype(cout << declval<T>()), ostream&> ^ prog.cpp:135:10: error: template argument 2 is invalid > ^ prog.cpp:136:6: error: expected unqualified-id before ‘>’ token > : true_type {}; ^ prog.cpp: In instantiation of ‘str ToString::bit_vec(T) [with T = std::vector<bool>; str = std::__cxx11::basic_string<char>]’: prog.cpp:181:38: required from here prog.cpp:179:40: error: no matching function for call to ‘ts(std::vector<bool>::reference)’ str res = "{"; F0R(i,sz(t)) res += ts(t[i]); ~~^~~~~~ prog.cpp:175:55: note: candidate: ‘template<class T> typename std::enable_if<is_printable_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T)’ tcT> typename enable_if<is_printable_v<T>,str>::type ts(T v) { ^~ prog.cpp:175:55: note: template argument deduction/substitution failed: prog.cpp: In substitution of ‘template<class T> typename std::enable_if<is_printable_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T) [with T = std::_Bit_reference]’: prog.cpp:179:40: required from ‘str ToString::bit_vec(T) [with T = std::vector<bool>; str = std::__cxx11::basic_string<char>]’ prog.cpp:181:38: required from here prog.cpp:175:55: error: no type named ‘type’ in ‘struct std::enable_if<false, std::__cxx11::basic_string<char> >’ prog.cpp: In instantiation of ‘void Input::re(T&, U& ...) [with T = int; U = {}]’: prog.cpp:410:6: required from here prog.cpp:152:43: error: no matching function for call to ‘re()’ tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:152:14: note: candidate: ‘template<class T, class ... U> void Input::re(T&, U& ...)’ tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ^~ prog.cpp:152:14: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects at least 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:149:13: note: candidate: ‘template<class T, class U> void Input::re(std::pair<_T1, _T2>&)’ tcTU> void re(pair<T,U>& p) { re(p.f,p.s); } ^~ prog.cpp:149:13: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:146:55: note: candidate: ‘template<class T> typename std::enable_if<is_readable_v<T>, void>::type Input::re(T&)’ tcT> typename enable_if<is_readable_v<T>,void>::type re(T& x) { cin >> x; } // default ^~ prog.cpp:146:55: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:147:12: note: candidate: ‘template<class T> void Input::re(std::complex<_Tp>&)’ tcT> void re(complex<T>& c) { T a,b; re(a,b); c = {a,b}; } // complex ^~ prog.cpp:147:12: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:150:55: note: candidate: ‘template<class T> typename std::enable_if<needs_input_v<T>, void>::type Input::re(T&)’ tcT> typename enable_if<needs_input_v<T>,void>::type re(T& i) { ^~ prog.cpp:150:55: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp: In instantiation of ‘void Input::re(T&, U& ...) [with T = long double; U = {}]’: prog.cpp:152:36: required from ‘void Input::re(T&, U& ...) [with T = long double; U = {long double}]’ prog.cpp:413:17: required from here prog.cpp:152:43: error: no matching function for call to ‘re()’ prog.cpp:152:14: note: candidate: ‘template<class T, class ... U> void Input::re(T&, U& ...)’ tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ^~ prog.cpp:152:14: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects at least 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:149:13: note: candidate: ‘template<class T, class U> void Input::re(std::pair<_T1, _T2>&)’ tcTU> void re(pair<T,U>& p) { re(p.f,p.s); } ^~ prog.cpp:149:13: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:146:55: note: candidate: ‘template<class T> typename std::enable_if<is_readable_v<T>, void>::type Input::re(T&)’ tcT> typename enable_if<is_readable_v<T>,void>::type re(T& x) { cin >> x; } // default ^~ prog.cpp:146:55: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:147:12: note: candidate: ‘template<class T> void Input::re(std::complex<_Tp>&)’ tcT> void re(complex<T>& c) { T a,b; re(a,b); c = {a,b}; } // complex ^~ prog.cpp:147:12: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp:150:55: note: candidate: ‘template<class T> typename std::enable_if<needs_input_v<T>, void>::type Input::re(T&)’ tcT> typename enable_if<needs_input_v<T>,void>::type re(T& i) { ^~ prog.cpp:150:55: note: template argument deduction/substitution failed: prog.cpp:152:43: note: candidate expects 1 argument, 0 provided tcTUU> void re(T& t, U&... u) { re(t); re(u...); } // read multiple ~~^~~~~~ prog.cpp: In instantiation of ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = char [7]; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’: prog.cpp:222:9: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:220:72: error: no matching function for call to ‘ts(const char [7])’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:175:55: note: candidate: ‘template<class T> typename std::enable_if<is_printable_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T)’ tcT> typename enable_if<is_printable_v<T>,str>::type ts(T v) { ^~ prog.cpp:175:55: note: template argument deduction/substitution failed: prog.cpp: In substitution of ‘template<class T> typename std::enable_if<is_printable_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T) [with T = const char*]’: prog.cpp:220:72: required from ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = char [7]; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:9: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:175:55: error: no type named ‘type’ in ‘struct std::enable_if<false, std::__cxx11::basic_string<char> >’ prog.cpp: In instantiation of ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = char [7]; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’: prog.cpp:222:9: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:181:6: note: candidate: ‘str ToString::ts(V<bool>)’ str ts(V<bool> v) { return bit_vec(v); } ^~ prog.cpp:181:6: note: no known conversion for argument 1 from ‘const char [7]’ to ‘V<bool>’ {aka ‘std::vector<bool>’} prog.cpp:182:26: note: candidate: ‘template<long unsigned int SZ> str ToString::ts(std::bitset<_Nb>)’ template<size_t SZ> str ts(bitset<SZ> b) { return bit_vec(b); } // bit vector ^~ prog.cpp:182:26: note: template argument deduction/substitution failed: prog.cpp:220:72: note: mismatched types ‘std::bitset<_Nb>’ and ‘const char*’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:185:12: note: candidate: ‘template<class T, class U> str ToString::ts(std::pair<_T1, _T2>)’ tcTU> str ts(pair<T,U> p) { return "("+ts(p.f)+", "+ts(p.s)+")"; } ^~ prog.cpp:185:12: note: template argument deduction/substitution failed: prog.cpp:220:72: note: mismatched types ‘std::pair<_T1, _T2>’ and ‘const char*’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:195:55: note: candidate: ‘template<class T> typename std::enable_if<needs_output_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T)’ tcT> typename enable_if<needs_output_v<T>,str>::type ts(T v) { ^~ prog.cpp:195:55: note: template argument deduction/substitution failed: prog.cpp: In substitution of ‘template<class T> typename std::enable_if<needs_output_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T) [with T = const char*]’: prog.cpp:220:72: required from ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = char [7]; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:9: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:195:55: error: no type named ‘type’ in ‘struct std::enable_if<false, std::__cxx11::basic_string<char> >’ prog.cpp: In instantiation of ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = int; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’: prog.cpp:222:9: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = int; U = {char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:38: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:220:72: error: no matching function for call to ‘ts(const int&)’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:175:55: note: candidate: ‘template<class T> typename std::enable_if<is_printable_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T)’ tcT> typename enable_if<is_printable_v<T>,str>::type ts(T v) { ^~ prog.cpp:175:55: note: template argument deduction/substitution failed: prog.cpp: In substitution of ‘template<class T> typename std::enable_if<is_printable_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T) [with T = int]’: prog.cpp:220:72: required from ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = int; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:9: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = int; U = {char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:38: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:175:55: error: no type named ‘type’ in ‘struct std::enable_if<false, std::__cxx11::basic_string<char> >’ prog.cpp: In instantiation of ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = int; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’: prog.cpp:222:9: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = int; U = {char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:38: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:181:6: note: candidate: ‘str ToString::ts(V<bool>)’ str ts(V<bool> v) { return bit_vec(v); } ^~ prog.cpp:181:6: note: no known conversion for argument 1 from ‘const int’ to ‘V<bool>’ {aka ‘std::vector<bool>’} prog.cpp:182:26: note: candidate: ‘template<long unsigned int SZ> str ToString::ts(std::bitset<_Nb>)’ template<size_t SZ> str ts(bitset<SZ> b) { return bit_vec(b); } // bit vector ^~ prog.cpp:182:26: note: template argument deduction/substitution failed: prog.cpp:220:72: note: mismatched types ‘std::bitset<_Nb>’ and ‘int’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:185:12: note: candidate: ‘template<class T, class U> str ToString::ts(std::pair<_T1, _T2>)’ tcTU> str ts(pair<T,U> p) { return "("+ts(p.f)+", "+ts(p.s)+")"; } ^~ prog.cpp:185:12: note: template argument deduction/substitution failed: prog.cpp:220:72: note: mismatched types ‘std::pair<_T1, _T2>’ and ‘int’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:195:55: note: candidate: ‘template<class T> typename std::enable_if<needs_output_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T)’ tcT> typename enable_if<needs_output_v<T>,str>::type ts(T v) { ^~ prog.cpp:195:55: note: template argument deduction/substitution failed: prog.cpp: In substitution of ‘template<class T> typename std::enable_if<needs_output_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T) [with T = int]’: prog.cpp:220:72: required from ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = int; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:9: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = int; U = {char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:38: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:195:55: error: no type named ‘type’ in ‘struct std::enable_if<false, std::__cxx11::basic_string<char> >’ prog.cpp: In instantiation of ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = char [3]; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’: prog.cpp:222:38: recursively required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = int; U = {char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:38: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:220:72: error: no matching function for call to ‘ts(const char [3])’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:175:55: note: candidate: ‘template<class T> typename std::enable_if<is_printable_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T)’ tcT> typename enable_if<is_printable_v<T>,str>::type ts(T v) { ^~ prog.cpp:175:55: note: template argument deduction/substitution failed: prog.cpp: In substitution of ‘template<class T> typename std::enable_if<is_printable_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T) [with T = const char*]’: prog.cpp:222:38: recursively required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = int; U = {char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:38: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:175:55: error: no type named ‘type’ in ‘struct std::enable_if<false, std::__cxx11::basic_string<char> >’ prog.cpp: In instantiation of ‘void Output::pr_sep(std::ostream&, str, const T&) [with T = char [3]; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’: prog.cpp:222:38: recursively required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = int; U = {char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:38: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:181:6: note: candidate: ‘str ToString::ts(V<bool>)’ str ts(V<bool> v) { return bit_vec(v); } ^~ prog.cpp:181:6: note: no known conversion for argument 1 from ‘const char [3]’ to ‘V<bool>’ {aka ‘std::vector<bool>’} prog.cpp:182:26: note: candidate: ‘template<long unsigned int SZ> str ToString::ts(std::bitset<_Nb>)’ template<size_t SZ> str ts(bitset<SZ> b) { return bit_vec(b); } // bit vector ^~ prog.cpp:182:26: note: template argument deduction/substitution failed: prog.cpp:220:72: note: mismatched types ‘std::bitset<_Nb>’ and ‘const char*’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:185:12: note: candidate: ‘template<class T, class U> str ToString::ts(std::pair<_T1, _T2>)’ tcTU> str ts(pair<T,U> p) { return "("+ts(p.f)+", "+ts(p.s)+")"; } ^~ prog.cpp:185:12: note: template argument deduction/substitution failed: prog.cpp:220:72: note: mismatched types ‘std::pair<_T1, _T2>’ and ‘const char*’ template<class T> void pr_sep(ostream& os, str, const T& t) { os << ts(t); } ~~^~~ prog.cpp:195:55: note: candidate: ‘template<class T> typename std::enable_if<needs_output_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T)’ tcT> typename enable_if<needs_output_v<T>,str>::type ts(T v) { ^~ prog.cpp:195:55: note: template argument deduction/substitution failed: prog.cpp: In substitution of ‘template<class T> typename std::enable_if<needs_output_v<T>, std::__cxx11::basic_string<char> >::type ToString::ts(T) [with T = const char*]’: prog.cpp:222:38: recursively required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = int; U = {char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:222:38: required from ‘void Output::pr_sep(std::ostream&, str, const T&, const U& ...) [with T = char [7]; U = {int, char [3]}; std::ostream = std::basic_ostream<char>; str = std::__cxx11::basic_string<char>]’ prog.cpp:224:54: required from ‘void Output::pr(const T& ...) [with T = {char [7], int, char [3]}]’ prog.cpp:436:21: required from here prog.cpp:195:55: error: no type named ‘type’ in ‘struct std::enable_if<false, std::__cxx11::basic_string<char> >’ prog.cpp: In function ‘void FileIO::setIn(str)’: prog.cpp:245:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] void setIn(str s) { freopen(s.c_str(),"r",stdin); } ~~~~~~~^~~~~~~~~~~~~~~~~~~~~ prog.cpp: In function ‘void FileIO::setOut(str)’: prog.cpp:246:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] void setOut(str s) { freopen(s.c_str(),"w",stdout); } ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Standard output is empty