Pagini recente » Cod sursa (job #1213308) | Cod sursa (job #1781935) | Cod sursa (job #934219) | Cod sursa (job #1236236) | Cod sursa (job #2883819)
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream fi("dijkstra.in");
ofstream fo("dijkstra.out");
int n,m;
vector <pair<int,int> >V[50001];
int D[50001];
int viz[50001];
queue <int>coada;
void BFS(int first)
{
coada.push(first);
while(!coada.empty())
{
int x=coada.front();
coada.pop();
viz[x]=1;
for(int i=0;i<V[x].size();i++)
{
int vecin=V[x][i].first;
viz[vecin]=1;
if(viz[vecin]==0)
{
coada.push(vecin);
if(vecin!=1 && D[vecin]==0)
D[vecin]=D[x]+V[x][i].second;
else
D[vecin]=min(D[vecin],D[x]+V[x][i].second);
}
}
}
}
int main()
{
fi>>n>>m;
for(int i=1;i<=m;i++)
{
int x,y,C;
fi>>x>>y>>C;
V[x].push_back(make_pair(y,C));
}
viz[1]=1;
BFS(1);
for(int i=2;i<=n;i++)
fo<<D[i]<<" ";
return 0;
}