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