Pagini recente » Cod sursa (job #2712151) | Cod sursa (job #2102966) | Cod sursa (job #2069496) | Cod sursa (job #1331939) | Cod sursa (job #2722529)
#include <bits/stdc++.h>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
const int oo = 2000000000;
int n, m;
int dist[50100], viz[50100];
vector <pair <int, int> > v[50100];
void Dijkstra(int nod)
{
int i, j, x, y;
for(i = 1;i <= n;i++)
dist[i] = oo;
dist[nod] = 0;
priority_queue< pair <int, int> > pq;
pq.push({0, 1});
while(!pq.empty())
{
int k = pq.top().second;
pq.pop();
for(auto w : v[k])
if(viz[w.first] == 0)
{
viz[w.first] = 1;
if(dist[w.first] > dist[k] + w.second)
{
dist[w.first] = dist[k] + w.second;
pq.push({-dist[w.first], w.first});
}
}
}
for(i = 2;i <= n;i++)
fout << dist[i] << " ";
}
int main()
{
int i;
fin >> n >> m;
for(i = 1;i <= m;i++)
{
int x, y, cost;
fin >> x >> y >> cost;
v[x].push_back({y, cost});
}
Dijkstra(1);
return 0;
}