

Input

The input contains a single integer a (10 ≤ a ≤ 999).

Output

Output 0 or 1.

Examples

Input

13


Output

1


Input

927


Output

1


Input

48


Output

0
#include <bits/stdc++.h>
using namespace std;
int main() {
  int a;
  scanf("%d", &a);
  printf("%d\n", a % 2);
  return 0;
}
