Pagini recente » Cod sursa (job #3129270) | Cod sursa (job #603946) | Cod sursa (job #128305) | Cod sursa (job #2823283) | Cod sursa (job #3310162)
#include <bits/stdc++.h>
using namespace std;
const int NMAX = 5e4 + 5, INF = 1e9 + 7;
int n, m, dist[NMAX];
vector <pair<int, int>> v[NMAX];
int32_t main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
freopen("dijkstra.in", "r", stdin);
freopen("dijkstra.out", "w", stdout);
cin >> n >> m;
int a, b, c;
for(int i = 1; i <= m; i++)
{
cin >> a >> b >> c;
v[a].push_back({b, c});
v[b].push_back({a, c});
}
for(int i = 1; i <= n; i++) dist[i] = INF;
dist[1] = 0;
priority_queue <pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> q;
q.push({0, 1});
while (!q.empty()) {
int cost = q.top().first, node = q.top().second;
q.pop();
if (cost > dist[node]) continue; // skip outdated
for (auto u : v[node]) {
if (dist[u.first] > cost + u.second) {
dist[u.first] = cost + u.second;
q.push({dist[u.first], u.first});
}
}
}
for(int i = 2; i <= n; i++)
{
cout << dist[i] << " ";
}
}