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Cod sursa(job #162178)
#include<fstream.h>
int a[101][101];
int main()
{ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n,i,j,k;
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++) f>>a[i][j];
f.close();
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if((i!=j)&&a[i][k]&&a[k][j])
{if(a[i][j]>(a[i][k]+a[k][j])) a[i][j]=a[i][k]+a[k][j];
else if(!a[i][j]) a[i][j]=a[i][k]+a[k][j];
}
for(i=1;i<=n;i++)
{for(j=1;j<=n;j++) g<<a[i][j]<<" ";
g<<'\n';
}
g.close();
return 0;
}