#include<stdio.h>

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