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

/**************************************************************
	Problem: 1492
	User: lidongbo
	Language: C++
	Result: Compile Error
****************************************************************/