제출 #917808

#제출 시각아이디문제언어결과실행 시간메모리
917808XXBabaProBerkay사이버랜드 (APIO23_cyberland)C++17
0 / 100
27 ms6744 KiB
#include <bits/stdc++.h>
using namespace std;

#define F first
#define S second

using ll = long long;

double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr)
{
	vector<vector<pair<int, ll>>> adj(N);
	for (int i = 0; i < M; i++)
	{
		adj[x[i]].emplace_back(y[i], c[i]);
		adj[y[i]].emplace_back(x[i], c[i]);
	}

	priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>> PQ;
	vector<ll> dist(N, 1e18);

	dist[0] = 0;
	PQ.emplace(0, 0);
	while (!PQ.empty())
	{
		auto [d, u] = PQ.top();
		PQ.pop();

		if (d != dist[u])
			continue;

		int t = (arr[u] == 0 ? 0 : dist[u]);
		for (pair<int, ll> i : adj[u])
		{
			auto [v, w] = i;
			if (dist[v] > t + w)
				PQ.emplace(dist[v] = t + w, v);
		}
	}

	return dist[H] == 1e18 ? -1.0 : double(dist[H]);
}
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