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