a=int(input())
b=2*a-1
for x in range(1,b+1):
    if x<=a-1:
        print(' '*(x-1)+'*'+' '*((a-x)*2-1)+'*')
    else:
        print(' '*(a-1)+'*')

#include <stdio.h>

int main()
{
    int n;
    scanf("%d", &n);

    for (int i = 1; i <= n; i++)//打印上半部分倒三角形
    {
        for (int j = 1; j <= 2 * n - 1; j++)
        {
            if (j == i)
            {
                printf("*");
            }
            else if (j == 2 * n - i)
            {
                printf("*");
                break;
            }
            else
            {
                printf(" ");
            }
        }
        printf("\n");
    }

    for (int i = 0; i < n - 1; i++)//打印下半部分
    {
        for (int i = 1; i < n; i++)
        {
            printf(" ");
        }
        printf("*\n");
    }
    
    return 0;
}