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Cod sursa(job #152182)
#include<fstream>
using namespace std;
int a[101][101],n,i,j,k;
int main()
{
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
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(i!=j && a[i][k] && a[k][j] && (a[i][j]>a[i][k]+a[k][j] || 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++)
g<<a[i][j]<<" ";
g<<endl;}
g.close();
}