#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,i;
	cin>>n;
	for(i=1;i<=n;i++) 
	{
		for(int j=n-1;j>=i;j--){
			cout<<" ";		
		}
	
		for(int j=1;j<=2*i-1;j++){
			if(i==1||i==n||j==1||j==i*2-1)
			cout<<"*";
			else cout<<" "; 
		}
		cout<<endl;
	}

	return 0;
}

/**************************************************************
	Problem: 1225
	User: sf751616
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/