제출 #975155

#제출 시각아이디문제언어결과실행 시간메모리
975155momo50Bosses (BOI16_bosses)C++14
100 / 100
398 ms780 KiB
#include<bits/stdc++.h> #define ll long long using namespace std; ll ans=LLONG_MAX,tmp=0; int cnt=0; bool vis[5007]; vector<int> g[5007]; void bfs(int src) { queue<pair<int,ll>> q; q.emplace(src,1); vis[src]=true; while(!q.empty()) { auto [u,dis]=q.front(); q.pop(); cnt++; tmp+=dis; for(auto v:g[u]) { if(vis[v])continue; vis[v]=true; q.emplace(v,dis+1); } } } int main() { cin.tie(nullptr)->ios::sync_with_stdio(false); int n; cin>>n; for(int i=1;i<=n;i++) { int k; cin>>k; while(k--) { int a; cin>>a; g[a].emplace_back(i); } } for(int i=1;i<=n;i++) { cnt=0,tmp=0; memset(vis,false,sizeof(vis)); bfs(i); if(cnt!=n)continue; ans=min(ans,tmp); } cout<<ans; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

bosses.cpp: In function 'void bfs(int)':
bosses.cpp:17:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   17 |         auto [u,dis]=q.front();
      |              ^
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