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Cod sursa(job #664948)
#include<fstream>
#define NMAX 50002
#define inf 400000007
using namespace std;
int n,m,D[NMAX],S[NMAX],T[NMAX],poz,i,j,minu,A[1002][1002];
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
int main (){
f>>n>>m;
int x,y,c;
for(i=1;i<=n;i++){
f>>x>>y>>c;
A[x][y]=c;
if(x==1)
D[y]=c;
}
for(i=1;i<=n;i++){
for(j=1;j<=n;j++)
if(!A[i][j])
A[i][j]=inf;
A[i][i]=0;
}
S[1]=1;
for(i=2;i<=n;i++){
if(!D[i])
D[i]=inf;
S[i]=0;
}
for(j=1;j<n;j++){
minu=100000;
for(i=1;i<=n;i++){
if(!S[i]){
if(D[i]<minu){
minu=D[i];
poz=i;
}
}
}
S[poz]=1;
for(i=1;i<=n;i++){
if(!S[i]){
if(D[i]>D[poz]+A[poz][i])
D[i]=D[poz]+A[poz][i];
}
}
}
for(i=2;i<=n;i++)
g<<D[i]<<" ";
return 0;
}