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Cod sursa(job #855836)
#include <fstream>
using namespace std;
int n,i,j,a[100][100];
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
void rf()
{
int i,j,k;
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][k]+a[k][j])&&i!=j)
a[i][j]=a[i][k]+a[k][j];
}
}
}
}
int main()
{
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
rf();
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<"\n";
}
return 0;
}