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Cod sursa(job #703289)
#include<fstream>
using namespace std;
int main()
{
int n, i, a[101][101],k,j;
ifstream f("royfloyd.in");
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(a[i][k] && a[k][j] && (a[i][j]>a[i][k]+a[k][j] || !a[i][j]) && (i!=j))
a[i][j]=a[i][k]+a[k][j];
ofstream g("royfloyd.out");
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<"\n";
}
g.close();
return 0;
}