#include <iostream>
using namespace std;

/* 
 * Jamie Levy
 *
 * HW 5 Solution
 *
 * box2.cpp
 */

int main(){
	int num;
	cout << "Enter a number :> ";
    cin >> num;

    
    for( int i = 1; i <= num; i++){
        for( int j = 1; j <= num; j++){
            if( j == 1 || j == num || i == 1 || i == num ){
                cout << " * ";
            }else{
                cout << "   ";
            }
        }
        cout << endl;
    }

    return 0;
}