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Cod sursa(job #468316)
#include<fstream>
using namespace std;
long a[105][105],n;
int main()
{
int i,j,k;
fstream fin,fout;
fin.open("royfloyd.in",ios::in);
fout.open("royfloyd.out",ios::out);
fin>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
fin>>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]!=0 && a[k][i]!=0 && ((a[i][j]==0 )|| ( a[i][j]>a[i][k]+a[k][j])))
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;
}