#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: linweilun
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/