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

}

/**************************************************************
	Problem: 1493
	User: mc002
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/