Pagini recente » Cod sursa (job #3323829) | Cod sursa (job #740186) | Cod sursa (job #3350411) | Cod sursa (job #3335764) | Cod sursa (job #3349620)
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream cin ("dijkstra.in");
ofstream cout ("dijkstra.out");
vector<pair<int , int>> g[50001];
priority_queue <pair<int , int>> d;
int dist[50001];
int vf[50001];
int main()
{
int n,m;
cin >>n>>m;
for (int i = 1; i <= m; i++)
{
int a,b,c;
cin >>a>>b>>c;
g[a].push_back({b , c});
}
for (int i = 1; i <= n; i++)
{
dist[i] = 1000000000;
}
d.push({0 , 1});
dist[1] = 0;
while (d.size() > 0)
{
int nod1 = d.top().second;
d.pop();
if (vf[nod1] == 0)
{
vf[nod1] = 1;
for (int i = 0; i < g[nod1].size(); i++)
{
int nod2 = g[nod1][i].first;
int val = g[nod1][i].second;
if (dist[nod2] > dist[nod1] + val)
{
dist[nod2] = dist[nod1] + val;
d.push({-dist[nod2] , nod2});
}
}
}
}
for (int i = 2; i <= n; i++)
{
if (dist[i] == 1000000000)
{
dist[i] = 0;
}
cout <<dist[i]<<" ";
}
return 0;
}