#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;j++){
		if(i+j==n+1||i==1||i==n){
			cout<<"*";
		}
		else cout<<" ";
		}
cout<<endl;
}	
return 0;
}
/**************************************************************
	Problem: 1493
	User: lidongbo
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/