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제출 #672718

#제출 시각아이디문제언어결과실행 시간메모리
672718jhnah917다리 (APIO19_bridges)C++14
0 / 100
72 ms11652 KiB
#include <bits/stdc++.h> using namespace std; struct UnionFind{ vector<int> p; UnionFind(int n) : p(n+1) { iota(p.begin(), p.end(), 0); } int find(int v){ return v == p[v] ? v : p[v] = find(p[v]); } void merge(int u, int v){ p[find(u)] = find(v); } }; int N, M, Q, P[50505], S[50505], R[101010]; vector<tuple<int,int,int,int>> A; int Find(int v){ return v == P[v] ? v : P[v] = Find(P[v]); } void Merge(int u, int v){ u = Find(u); v = Find(v); if(u != v) P[u] = v, S[v] += S[u]; } int main(){ ios_base::sync_with_stdio(false); cin.tie(nullptr); cin >> N >> M; for(int i=1,u,v,w; i<=M; i++) cin >> u >> v >> w, A.emplace_back(w, 1, u, v); cin >> Q; for(int i=1,op,s,w; i<=Q; i++) cin >> op >> s >> w, A.emplace_back(w, 0, s, i); sort(A.begin(), A.end(), greater<>()); iota(P+1, P+N+1, 1); fill(S+1, S+N+1, 1); for(auto [w,t,a,b] : A){ if(t == 0) Merge(a, b); else R[b] = S[Find(a)]; } for(int i=1; i<=Q; i++) cout << R[i] << "\n"; }

컴파일 시 표준 에러 (stderr) 메시지

bridges.cpp: In function 'int main()':
bridges.cpp:29:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   29 |     for(auto [w,t,a,b] : A){
      |              ^
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