#include<cstdio>
#include<iostream>
#include<cmath>

using namespace std;

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

    int cx = n / 2, cy = n / 2;//中心点坐标
    for(int i = 0;i < n;i ++)
    {
        for(int j = 0;j < n;j ++)
            if(abs(i - cx) + abs(j - cy) <= n / 2) cout << '*';//利用曼哈顿距离求解，若要输出空心，则<=改为==
            else cout << ' ';
        cout << endl;
    }
    return 0;
}