#include <iostream>
using namespace std;
int main()
{
int i,j,s=0,p=1,n,m,minim=0,maxim=0;
cin>>n;
int A[n][n];
for(i=0;i<n;i++)
for(j=0;j<n;j++)
cin>>A[i][j];
minim=A[0][0];
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
if (i==j)
s=s+A[i][j];
if(i==0 && A[i][j]<minim)
minim=A[i][j];
}
}
for(i=0;i<n;i++)
for(j=0;j<n;j++)
{
if(i+j==n-1)
p=p*A[i][j];
if(j==0 && A[i][j]>maxim)
maxim=A[i][j];
}
cout<<"Suma elem diag principala: "<<s<<endl;
cout<<"Produs elem diag secundara: "<<p<<endl;
cout<<"Minim prima linie: "<<minim<<endl;
cout<<"Maxim prima coloana: "<<maxim;
}