Pagini recente » Cod sursa (job #3039943) | Cod sursa (job #666920) | Cod sursa (job #1853098) | Cod sursa (job #820354) | Cod sursa (job #2175935)
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ll;
typedef pair < int , int > PII;
typedef pair < int , PII > PIPII;
int n, m, dist[50100];
priority_queue < PII > H;
vector < PII > V[50100];
void Dijkstra(int src){
H.push({0, src});
while (H.size()){
int x = H.top().second; H.pop();
for (auto it : V[x]){
if (dist[it.first] > dist[x] + it.second){
dist[it.first] = dist[x] + it.second;
H.push({dist[it.first], it.first});
}
}
}
}
int main(){
ifstream cin("dijkstra.in");
ofstream cout("dijkstra.out");
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> n >> m;
for (int i = 1, x, y, c; i <= m; i++){
cin >> x >> y >> c;
V[x].push_back({y, c});
}
for (int i = 2; i <= n; i++) dist[i] = 2e9;
Dijkstra(1);
for (int i = 2; i <= n; i++)
cout << (dist[i] == 2e9 ? 0 : dist[i]) << " ";
return 0;
}