#include <stdio.h>

int main() {
    int n;
    scanf("%d", &n);
    
    if (n % 2 == 0 || n < 1) {
        printf("Invalid Input");
        return 0;
    }
    
    for (int i = n; i >= 1; i -= 2) {
        for (int j = 0; j < i; j++) {
            print("*");
        }
        print("\n")
    }
}