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Cod sursa(job #771302)
#include<fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n, a[101][101];
void citire()
{int i,j;
for(i=1; i<=n; i++)
for(j=1; j<=n; j++)
f>>a[i][j];}
void royfloyd()
{int i,j,k;
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] && (!a[i][j] || a[i][j]>a[i][k]+a[k][j]))
a[i][j]=a[i][k]+a[k][j];
}
void afisare()
{int i,j;
for(i=1; i<=n; i++)
{for(j=1; j<=n; j++)
g<<a[i][j]<<" ";
g<<endl;}
}
int main()
{f>>n;
citire();
royfloyd();
afisare();
f.close();
g.close();
return 0;}