sqrOfStars

#include <iostream>
#include <string>

using namespace std;

int main()
{
    int N;
    cin >> N;
    char star = '*';
    char emptySpace = ' ';
    int emptySpaceQuantity = N - 2;

    for (int i = 1; i <= N; i++) {
        if (i == 1) {
            cout << string(N, star) << endl;
        }
        else if (i < N) {
            cout << star << string(emptySpaceQuantity, emptySpace) << star << endl;
        }
        else if (i == N) {
            cout << string(N, star) << endl;
        }
    }
}