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Cod sursa(job #894589)
#include<fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n,a[200][200];
void citire()
{
int i,j;f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
}
void rezolvare()
{
int i,j;
for(int k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(a[i][k] && a[k][j] && i!=j && (a[i][j]>a[k][j]+a[i][k] || !a[i][j]))
a[i][j] = a[i][k] + a[k][j];
}
void afisare()
{
for(int j=1;j<=n;j++)
{for(int i=1;i<=n;i++)
g << a[j][i]<<' ';
g<<'\n';}
}
int main()
{
citire();
rezolvare();
afisare();return 0;
}