제출 #984827

#제출 시각아이디문제언어결과실행 시간메모리
984827rshohruh사이버랜드 (APIO23_cyberland)C++17
0 / 100
40 ms4184 KiB
#include "cyberland.h" #include <vector> #include <bits/stdc++.h> using namespace std; using ll = long long; using node = pair<int, ll>; vector<vector<node>> g; set<int> st; vector<int> used; void dfs(int u, int p){ if(u == p) return; used[u] = 1; for(auto [v, w]: g[u]) if(!used[v]) dfs(v, p); } double solve(int N, int M, int K, int H, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> arr) { for(int x: arr) assert(x < 2); used.assign(N, 0); g.assign(N, vector<node>()); vector<ll> h(N, 1e18); for(int i = 0; i < M; ++i){ g[x[i]].emplace_back(y[i], c[i]); g[y[i]].emplace_back(x[i], c[i]); } dfs(0, H); priority_queue<node, vector<node>, greater<node>> b; b.emplace(H, 0); while(!b.empty()){ auto [u, cur] = b.top(); b.pop(); if(h[u] < cur) continue; h[u] = cur; for(auto [v, w]: g[u]) b.emplace(v, cur+w); } ll ans = 1e18; for(int i = 0; i < N; ++i) if(arr[i] == 0 && used[i] == 1) ans = min(ans, h[i]); return (ans == 1e18 ? -1 : ans); }
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