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Cod sursa(job #391284)
#include<fstream.h>
#define dmax 102
long a[dmax][dmax];
int main()
{
long n,i,j,k;
ifstream fin("royfloyd.in");
fin>>n;
for (i=1; i<=n; i++)
for (j=1; j<=n; j++)
fin>>a[i][j];
for (i=1; i<=n; i++)
for (j=1; j<=n; j++)
for (k=1; k<=n; k++)
if ((a[j][i]+a[i][k]<a[j][k] && a[j][i]!=0 && a[i][k]!=0) || a[i][j]==0)
a[j][k]=a[j][i]+a[i][k];
ofstream fout("royfloyd.out");
for (i=1; i<=n; i++)
{
for (j=1; j<=n; j++)
fout<<a[i][j]<<" ";
fout<<'\n';
}
fin.close();
fout.close();
return 0;
}