#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;

    // 打印上半部分（包括中间行）
    for (int i = 1; i <= (n + 1) / 2; i++) {
        for (int j = 1; j <= i; j++) {
            cout << "*";
        }
        for (int j = 1; j <= n - 2 * i; j++) {
            cout << " ";
        }
        for (int j = 1; j <= i; j++) {
            cout << "*";
        }
        cout << endl;
    }

    // 打印下半部分
    for (int i = (n - 1) / 2; i >= 1; i--) {
        for (int j = 1; j <= i; j++) {
            cout << "*";
        }
        for (int j = 1; j <= n - 2 * i; j++) {
            cout << " ";
        }
        for (int j = 1; j <= i; j++) {
            cout << "*";
        }
        cout << endl;
    }

    return 0;
}    
/**************************************************************
	Problem: 1247
	User: fuyijun
	Language: C++
	Result: Presentation Error
****************************************************************/