#include <bits/stdc++.h>
using namespace std;
int main(){
	int n,i,j;
	cin>>n;
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=n-i;j++) cout<<" ";
		
		for(j=1;j<=2*i-1;j++){
		if(j==1||j==2*i-1||i==1||i==n) cout<<"*";
		else cout<<" ";}
		
	cout<<endl;
	}
	return 0;
	}

/**************************************************************
	Problem: 1225
	User: ljl2
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/