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Cod sursa(job #423544)
#include<fstream.h>
ofstream g("dijkstra.out");
long v[50001][50001], i,j,n,m,p,viz[50001], t[50001], d[50001],x,y,c,a,nr;
long selmin()
{long min=1000001,b;
for(int k=1;k<=n;k++)
if(!viz[k])
if(d[k]<min)
{min=d[k];
b=k;
}
return b;
}
int main()
{ifstream f("dijkstra.in");
f>>n>>m;
p=1;
for(i=1;i<=m;++i)
{f>>x>>y>>c;
v[x][y]=c;
if(c==0) v[x][y]=-1;
}
for(i=1;i<=n;++i)
for(j=1;j<=n;j++)
{if(i!=j && v[i][j]==0)
v[i][j]=32000;
if(v[i][j]==-1) v[i][j]=0;}
viz[p]=1;
for(i=1;i<=n;++i)
{if(i!=p)t[i]=p;
d[i]=v[p][i];
}
nr=1;
while(nr<n)
{a=selmin();
viz[a]=1;nr++;
for(i=1;i<=n;++i)
if(!viz[i])
if(d[a]+v[a][i]<d[i])
{d[i]=d[a]+v[a][i];
t[i]=a;
}
}
for(i=2;i<=n;i++)
if(d[i]==32000) g<<"0 ";
else g<<d[i]<<' ';
g<<'\n';
f.close();
g.close();
return 0;
}