#include<stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    if (n<=0 || n>10 ||n%2 ==0)
    {
        printf("Invalid Input");
    }
    else
    {
        for (int i=n;i>=1; i-=2)
        {
            int spaces = (n-i)\2;
            for(int s=0; s<spaces;s++)
            {
                printf(" ");
            }
            for (int j=0;j<i;j++)
            {
                printf(" ");
            }
            printf("\n");
        }
    }
    return 0;
}