#include<stdio.h>
int main() {
    int n;
    scanf("%d", &n);
    if (n % 2 == 0) {
        printf("Invalid Input");
        return 0;
    }
    int spaces = 0;
    for (int i = n; i>= 1; i -= 2) {
        for (int s = 0; s< space3s; s++) {
            printf(" ");
        }
        for (int j = 0; j < i; j++) {
            printf("*");
        }
        printf("\n");
        spaces++;
    }
    return 0;
}