제출 #965346

#제출 시각아이디문제언어결과실행 시간메모리
965346MisterReaperHarbingers (CEOI09_harbingers)C++17
20 / 100
1090 ms11860 KiB
#include <bits/stdc++.h> using i64 = long long; constexpr int maxN = 1E5 + 5; constexpr i64 INF = 1E18; int N; std::vector<std::pair<int, int>> adj[maxN]; int S[maxN], V[maxN], par[maxN], D[maxN]; i64 dp[maxN]; void dfs(int v) { [&] { int u = v; while(u != 1) { u = par[u]; // std::cerr << u << ' ' << v << ' ' << dp[u] + 1LL * D[u] * V[v] + S[v] << '\n'; dp[v] = std::min(dp[v], dp[u] + 1LL * (D[v] - D[u]) * V[v] + S[v]); } }(); for(auto [u, w] : adj[v]) { if(u == par[v]) { continue; } D[u] = D[v] + w; par[u] = v; dfs(u); } } signed main() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); std::cin >> N; for(int i = 1; i <= N - 1; i++) { int A, B, W; std::cin >> A >> B >> W; adj[A].emplace_back(B, W); adj[B].emplace_back(A, W); } for(int i = 2; i <= N; i++) { std::cin >> S[i] >> V[i]; } std::fill_n(&dp[1], N, INF); dp[1] = 0; par[1] = 1; dfs(1); for(int i = 2; i <= N; i++) { std::cout << dp[i] << ' '; } std::cout << '\n'; return 0; }
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