

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 solve():
    n = int(input())
    if(n % 2 == 0):
        print(0)
    else:
        print(1)


for t in range(1):
    solve()
