#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: admin
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2076 kb
****************************************************************/