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

/**************************************************************
	Problem: 1493
	User: ccf
	Language: C++
	Result: Accepted
	Time:20 ms
	Memory:2072 kb
****************************************************************/