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Cod sursa(job #745398)
#include <fstream>
using namespace std;
#define N 100
int n, a[N][N];
int main(){
ifstream fin("royfloyd.in");
fin>>n;
int i, j, k;
for(i=0; i<n; i++)
for(j=0; j<n; j++)
fin>>a[i][j];
fin.close();
ofstream fout("royfloyd.out");
for(k=0; k<n; k++)
for(i=0; i<n; i++)
for(j=0; j<n; j++){
if(i==j || !a[i][k] || !a[k][j])
continue;
a[i][j]=min(a[i][j], a[i][k]+a[k][j]);
}
for(i=0; i<n; i++){
for(j=0; j<n; j++)
fout<<a[i][j]<<" ";
fout<<"\n";
}
fout.close();
return 0;
}