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