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Cod sursa(job #363478)
#include<fstream>
#define infinit 2000000
using namespace std;
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
int a[101][101],n;
int main()
{int i,j,k,aux;
fin>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{fin>>aux;
if(aux>0) a[i][j]=aux;
else a[i][j]=infinit;
}
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(a[i][j]>a[i][k]+a[k][j] && a[i][k]!=0 && a[k][j]!=0 && a[i][j]!=0)
a[i][j]=a[i][k]+a[k][j];
for(i=1;i<=n;i++)
{for(j=1;j<=n;j++)
fout<<a[i][j]<<" ";
fout<<'\n';
}
fin.close();
fout.close();
return 0;
}