#include<bits/stdc++.h>
using namespace std;
int main(){
	int i,j,n;
	cin>>n;
	for(i=1;i<=n-1;i++){
		cout<<" ";
	}
	cout<<"*"<<endl;
	for(i=2;i<=n-1;i++){
		for(j=1;j<=n-i;j++){
			cout<<" ";
		}
		cout<<"*";
		for(j=1;j<=i*2-3;j++){
			cout<<" ";
		}
		cout<<"*"<<endl;
	} 
	for(i=1;i<=n*2-1;i++){
		cout<<"*";
	}
	return 0;
}

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