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Cod sursa(job #767485)
#include <fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n, a[105][105];
int main()
{
int i, j, k;
f >> n ;
for (i=0; i<n; i++)
for (j=0; j<n; j++)
f >> a[i][j];
for(k=0; k<n; k++)
for(i=0; i< n; i++)
for(j=0; 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];
for (i=0; i<n; i++)
{
for (j=0; j<n; j++)
g << a[i][j] << ' ';
g << '\n';
}
return 0;
}