#include <iostream>
using namespace std;

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

    for (int i = 1; i <= n; i++) {
        // 打印左边的空格
        for (int j = 1; j <= n - i; j++) {
            cout << " ";
        }
        // 打印左边的星号
        for (int j = 1; j <= 2 * i - 1; j++) {
            cout << "*";
        }
        // 打印中间的空格
        for (int j = 1; j <= 2 * (n - i); j++) {
            cout << " ";
        }
        // 打印中间的星号
        for (int j = 1; j <= 2 * i - 1; j++) {
            cout << "*";
        }
        // 打印右边的空格
        for (int j = 1; j <= 2 * (n - i); j++) {
            cout << " ";
        }
        // 打印右边的星号
        for (int j = 1; j <= 2 * i - 1; j++) {
            cout << "*";
        }
        cout << endl;
    }

    return 0;
}
    
/**************************************************************
	Problem: 1006
	User: fuyijun
	Language: C++
	Result: Accepted
	Time:3 ms
	Memory:2072 kb
****************************************************************/