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Cod sursa(job #649925)
#include<fstream>
#include<iostream>
using namespace std;
#define nmax 50001
int d[nmax];
int vec[nmax][1001];
int dist[nmax][1001];
int n,m,i,j,a,b;
int que[nmax];
bool este[nmax];
int main(){
ifstream fi("dijkstra.in");
ofstream g("dijkstra.out");
fi>>n>>m;
for(i=1;i<=m;i++){
if(i<=n)
d[i]=1000000;
fi>>a>>b>>j;
vec[a][0]++;
vec[a][vec[a][0]]=b;
vec[b][0]++;
vec[b][vec[b][0]]=a;
dist[a][b]=j;
dist[b][a]=j;
}
d[1]=0;
que[1]=1;
este[1]=true;
int f=1,l=1;
while(f<=l){
int nod=que[f];
//cout<<nod<<" "<<d[nod]<<"\n";
for(i=1;i<=vec[nod][0];i++){
int vecin=vec[nod][i];
if(d[vecin]>d[nod]+dist[nod][vecin]){
d[vecin]=d[nod]+dist[nod][vecin];
//cout<<vecin<<" "<<nod<<" "<<d[vecin]<<" "<<d[nod]<<"\n";
}
if(este[vecin]==false){
l++;
que[l]=vecin;
este[vecin]=true;
}
}
f++;
}
for(i=2;i<=n;i++){
if(d[i]==1000000)
g<<"0 ";
else
g<<d[i]<<" ";
}
return 0;
}