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