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Cod sursa(job #670966)
#include<fstream>
using namespace std;
ifstream in("royfloyd.in");
ofstream out("royfloyd.out");
int n,a[101][101],m;
int main(){
int i,j,k;
in>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
in>>a[i][j];
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(i!=k&&i!=j&&j!=k)
if(a[i][k]&&a[k][j]){
int temp=a[i][k]+a[k][j];
if(temp<a[i][j]||a[i][j]==0)
a[i][j]=temp;}
for(i=1;i<=n;i++){
for(j=1;j<=n;j++)
out<<a[i][j]<<" ";
out<<endl;
}return 0;}