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Cod sursa(job #767807)
#include <fstream>
using namespace std;
ofstream g("royfloyd.out");
ifstream f("royfloyd.in");
int n,a[101][101],i,j,k;
void citire()
{
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
}
void royfloyd()
{
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];
}
void afisare()
{
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<endl;
}
}
int main()
{
citire();
royfloyd();
afisare();
return 0;
}