Implementation
P_5_Migrant_Mascot.cpp
C++
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int inf = 1e9;
const long long INF = 1e17; //❄️
int main() {
ios::sync_with_stdio(0); cin.tie(0);
int n, m; cin >> n >> m;
vector<vector<pair<int, int>>> adj(n + 1);
for (int i = 0; i < m; i++) {
int u, v, w; cin >> u >> v >> w;
adj[u].emplace_back(w, v);
adj[v].emplace_back(w, u);
}
vector<int> dist(n + 1, 0);
dist[1] = inf;
priority_queue<pair<int, int>> pq;
pq.push({inf, 1});
while (!pq.empty()) {
auto[w, cur] = pq.top(); pq.pop();
if (w < dist[cur]) continue;
for (auto[wt, v] : adj[cur]) {
if (min(w, wt) > dist[v]) {
dist[v] = min(w, wt);
pq.push({min(w, wt), v});
}
}
}
cout << 0 << '\n';
for (int i = 2; i <= n; i++) {
cout << dist[i] << '\n';
}
return 0;
}