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

return 0;

}

/**************************************************************
	Problem: 1225
	User: mc002
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/