#include <iostream>

using namespace std;

int l;

int main(){
    cin>>l;
     for (int i = 0; i<=l*2-1; i+=2){
            for (int j = 0; j<i/2;j++)
                cout<<" ";
            for (int j = i/2; j<+l-i/2; j++)
                cout<<"*";
            for (int j = l-i/2; j<=l; j++);
            cout<<" ";
            cout<<endl;

   }
}