

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
def number(x):
    if x % 2 == 0 :
        return 0
    else:
        return 1
x = input()
print number(x)
