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