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Cod sursa(job #941081)
#include <fstream>
#include <algorithm>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int main()
{
int a[101][101],n;
f>>n;
for (int i=1; i<=n; i++)
for (int j=1; j<=n; j++) f>>a[i][j];
for (int k=1; k<=n; k++)
for (int i=1; i<=k; i++)
for (int j=1; j<=n; j++)
if (a[i][k]!=0 && a[k][j]!=0 && i!=j)
if (a[i][j]>a[i][k]+a[k][j] || a[i][j]==0) a[i][j]=a[i][k]+a[k][j];
for (int i=1; i<=n; i++)
{
for (int j=1; j<=n; j++) g<<a[i][j]<<' '; g<<'\n';
}
f.close(); g.close();
return 0;
}