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