#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;
int main(){
    int i,j,n;
    cin>>n;
    for(i=1;i<n;i++){
        cout<<" ";
    }
    for(i=1;i<=n;i++){
        cout<<"*";
    }
    cout<<endl;
    for(i=2;i<=n;i++){
        for(j=1;j<=n-i;j++){
            cout<<" ";
        }
        cout<<"*";
        for(j=1;j<=n+(i-2)*2;j++){
            cout<<" ";
        }
        cout<<"*"<<endl;
    }
    for(i=n-1;i>=2;i--){
        for(j=1;j<=n-i;j++){
            cout<<" ";
        }
        cout<<"*";
        for(j=1;j<=n+(i-2)*2;j++){
            cout<<" ";
        }
        cout<<"*"<<endl;
    }
    for(i=1;i<n;i++){
        cout<<" ";
    }
    for(i=1;i<=n;i++){
        cout<<"*";
    }
    cout<<endl;
}
/**************************************************************
	Problem: 1011
	User: wangchenyu
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2076 kb
****************************************************************/