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Cod sursa(job #892694)
#include <fstream>
using namespace std;
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
int D[101][101],n,i,j,z;
int main()
{
fin>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
fin>>D[i][j];
for(z=1;z<=n;z++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(D[i][z]&&D[z][j] && (D[i][z]+D[z][j]<D[i][j]|| !D[i][j]) && i!=j)
D[i][j]=D[i][z]+D[z][j];
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
fout<<D[i][j]<<" ";
fout<<"\n";
}
}