#include <iostream>
using namespace std;

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

    // 打印上半部分
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n - i - 1; j++) {
            cout << " ";
        }
        cout << "*";
        for (int k = 0; k < 2 * i - 1; k++) {
            if (i > 0) {
                cout << " ";
            }
        }
        if (i > 0) {
            cout << " *";
        }
        cout << endl;
    }

    for (int i = n - 2; i >= 0; i--) {
        for (int j = 0; j < n - i - 1; j++) {
            cout << " ";
        }
        cout << "*";
        for (int k = 0; k < 2 * i - 1; k++) {
            if (i > 0) {
                cout << " ";
            }
        }
        if (i > 0) {
            cout << " *";
        }
        cout << endl; 
    } 

    return 0;
}
/**************************************************************
	Problem: 1011
	User: fandaohan
	Language: C++
	Result: Wrong Answer
****************************************************************/