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Cod sursa(job #748877)
#include <fstream>
using namespace std;
int main()
{
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int N,A[102][102],i,j,k;
f>>N;
for(i=1;i<=N;i++)
for(j=1;j<=N;j++)
f>>A[i][j];
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];
for(i=1;i<=N;i++)
{
for(j=1;j<=N;j++)
g<<A[i][j]<<" ";
g<<"\n";
}
f.close();
g.close();
return 0;
}