#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++)
       {
       for (int j=0;j<i;j++)
       {
           printf("*");
       }
       printf("\n");
       }
    }
    return 0;
}