제출 #391156

#제출 시각아이디문제언어결과실행 시간메모리
391156paliloPrice List (POI13_cen)C++17
70 / 100
4086 ms8128 KiB
#include <bits/stdc++.h>
using namespace std;

int main() {
	cin.tie(nullptr)->sync_with_stdio(false);
#ifdef home
	freopen("in", "r", stdin);
	freopen("out", "w", stdout);
#endif
	int n, m, k, a, b;
	cin >> n >> m >> k >> a >> b, --k;

	vector<vector<int>> adj(n);
	for (int u, v; m--;) {
		cin >> u >> v, --u, --v;
		adj[u].emplace_back(v);
		adj[v].emplace_back(u);
	}

	vector<int> step(n, -1);
	step[k] = 0;

	queue<int> q;
	q.emplace(k);
	while (!q.empty()) {
		const auto u = q.front();
		q.pop();

		for (const auto& v : adj[u])
			if (step[v] == -1) {
				step[v] = step[u] + 1;
				q.emplace(v);
			}
	}

	vector<bool> neighbor(n);
	vector<int> jump(n, -1);
	jump[k] = 0;

	q.emplace(k);
	while (!q.empty()) {
		const auto u = q.front();
		q.pop();

		for (const auto& v : adj[u])
			neighbor[v] = true;

		for (const auto& via : adj[u])
			for (const auto& v : adj[via])
				if (!neighbor[v] && jump[v] == -1) {
					jump[v] = jump[u] + 1;
					q.emplace(v);
				}

		for (const auto& v : adj[u])
			neighbor[v] = false;
	}

	for (int i = 0; i < n; ++i)
		cout << min({step[i] * a,
					 (step[i] & 1) * a + (step[i] >> 1) * b,
					 ~jump[i] ? jump[i] * b : INT_MAX})
			 << '\n';
}
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