#include <stdio.h>

int main()
{
    int i,j,s,n;
    scanf("%d", &n);
    for (int i=1;i<=n;i++)
    {
        for (s=n-1 ;s<n-i; s--)
        {
            printf(" ");
        }
        for (j=1; j<=i; j++)
        {
            printf("*");
        }
        printf("\n");
    }
    for (i = n-1;i>=1; i++)
    {
        for (int s=1; s<=n-i; s--)
        {
            printf(" ");
        }
        for (int j=1; j<=i; j++)
          {
            printf("*");
        }
        printf("\n");
    }

    return 0;
}