제출 #48366

#제출 시각아이디문제언어결과실행 시간메모리
48366someone_aaBosses (BOI16_bosses)C++17
100 / 100
1476 ms1592 KiB
#include <bits/stdc++.h> #define ll long long #define pb push_back #define mp make_pair #define ull unsigned long long using namespace std; const int maxn = 5100; vector<int>g[maxn], gc[maxn]; bool visited[maxn]; ll result, temp_result; int n; ll dfs(int node, int parent) { ll tsum = 0LL; for(int i:gc[node]) { if(i!=parent) { tsum += dfs(i, node); } } temp_result += tsum + 1LL; return tsum + 1LL; } void bfs(int st) { for(int i=1;i<=n;i++) gc[i].clear(); memset(visited, false ,sizeof(visited)); queue<int>q; q.push(st); visited[st] = true; int cntr = 1; while(!q.empty()) { int curr = q.front(); q.pop(); for(int i:g[curr]) { if(!visited[i]) { visited[i] = true; cntr++; gc[curr].pb(i); q.push(i); } } } if(cntr == n) { temp_result = 0LL; ll temp = dfs(st, -1); result = min(result, temp_result); } } int main() { ios_base::sync_with_stdio(false); cin.tie(0); cin>>n; int t, u; for(int i=1;i<=n;i++) { cin>>t; for(int j=0;j<t;j++) { cin>>u; g[u].pb(i); } } result = LLONG_MAX; for(int i=1;i<=n;i++) { bfs(i); } cout<<result; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

bosses.cpp: In function 'void bfs(int)':
bosses.cpp:48:12: warning: unused variable 'temp' [-Wunused-variable]
         ll temp = dfs(st, -1);
            ^~~~
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