제출 #1015713

#제출 시각아이디문제언어결과실행 시간메모리
1015713MohamedFaresNebili구슬과 끈 (APIO14_beads)C++14
28 / 100
1042 ms7004 KiB
#include <bits/stdc++.h> using namespace std; int N; vector<pair<int, int>> adj[200005]; int DP[200005], cur[200005]; void dfs(int v, int p) { int maxW = -1e9; for(auto u : adj[v]) { if(u.first == p) continue; dfs(u.first, v); int sum = max(DP[u.first], u.second + cur[u.first]); DP[v] += sum; maxW = max(maxW, u.second + DP[u.first] - sum); } cur[v] = maxW + DP[v]; } int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); cin >> N; for(int l = 0; l < N - 1; l++) { int U, V, W; cin >> U >> V >> W; adj[U].push_back({V, W}); adj[V].push_back({U, W}); } int res = 0; for(int l = 1; l <= N; l++) { for(int i = 1; i <= N; i++) DP[i] = cur[i] = 0; dfs(l, l); res = max(res, DP[l]); } cout << res << "\n"; }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...