제출 #1263274

#제출 시각아이디문제언어결과실행 시간메모리
1263274DeltaStructTraffic (IOI10_traffic)C++20
0 / 100
0 ms324 KiB
#include <bits/stdc++.h> using namespace std; int res = 2e9; int dfs(vector<vector<int>>& G,int x,int p,int s,int A[]){ int m = 0,r = s-A[x]; for (int y:G[x]) if (y!=p){ int t = dfs(G,y,x,s,A); r -= t,m = max(m,t); } res = min(res,max(m,r)); return s-r; } int LocateCentre(int n,int A[],int B[],int C[]){ vector<vector<int>> G(n); for (int i(0);i < n-1;++i) G[B[i]].emplace_back(C[i]),G[C[i]].emplace_back(B[i]); dfs(G,0,-1,accumulate(A,A+n,0),A); return res; }
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