#include <iostream>
using namespace std;

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

    for (int i = 0; i < n; i++) {
        // 打印空格
        for (int j = 0; j < n - i - 1; j++) {
            cout << " ";
        }

        // 打印星号和中间空格
        for (int k = 0; k < 2 * i + 1; k++) {
            if (k % 2 == 0) {
                cout << "*";
            } else {
                cout << " ";
            }
        }
        cout << endl;
    }
    return 0;
}    
/**************************************************************
	Problem: 1225
	User: fuyijun
	Language: C++
	Result: Wrong Answer
****************************************************************/