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Cod sursa(job #988217)
#include <fstream>
using namespace std;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
int mnm,ok=0,k,a,b,n,m,i,j,c[250][250],d[5000],tata[50],viz[5000];
int main()
{
f>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
c[i][j]=1000000;
for(i=1;i<=m;i++)
{
f>>a>>b;
f>>c[a][b];
}
for(i=1;i<=n;i++)
{
d[i]=c[1][i];
tata[i]=1;
}
viz[1]=1;
tata[1]=0;
while(!ok)
{
mnm=1000000;
for(i=1;i<=n;i++)
{
if(!viz[i]&&d[i]<mnm)
{
mnm=d[i];
k=i;
}
}
if(mnm!=1000000)
{
viz[k]=1;
for(i=1;i<=n;i++)
{
if(!viz[i]&&d[i]>d[k]+c[k][i])
{
d[i]=d[k]+c[k][i];
tata[i]=k;
}
}
}
else
ok=1;
}
for(i=2;i<=n;i++)
if(d[i]==1000000)
g<<"0 ";
else
g<<d[i]<<" ";
return 0;
}