#include <iostream>
using namespace std;

int main() {
    int x;
    cin>>x;
  
        for(int i=1; i<=x; i++){
        for( int j=1; j<=x; j++){
            if(i==j || i+j==x+1){
                cout<<"* ";
            }
            else cout<<"  ";
        }
        cout<<endl;
        }
    }