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Cod sursa(job #694002)
#include <fstream>
using namespace std;
int a[102][102],i,j,k,n;
int main ()
{
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if((a[i][k]+a[k][j]<a[i][j]||a[i][j]==0)&&a[i][k]&&a[k][j]&&i!=j&&j!=k&&k!=i)
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';}
f.close(); g.close();
return 0;
}