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Cod sursa(job #723257)
#include<fstream>
using namespace std;
int main()
{
ifstream in("royfloyd.in");
ofstream out("royfloyd.out");
int n,a[101][101],i,j,k;
in>>n;
for(i=0;i<n;i++)
for(j=0;j<n;j++)
in>>a[i][j];
for(k=0;k<n;k++)
for(i=0;i<n;i++)
for(j=0;j<n;j++)
if(a[i][k]!=0 && a[k][j]!=0 && (a[i][k]+a[k][j] < a[i][j] || a[i][j]==0 ) && i!=j ) a[i][j]=a[i][k]+a[k][j];
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
out<<a[i][j]<<" ";
out<<endl;
}
return 0;
}