

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 input_s():
    return raw_input()

def input_i():
    return int(raw_input())

def input_2_i():
    arr = map(int, raw_input().split())
    return arr[0], arr[1]

def input_3_i():
    arr = map(int, raw_input().split())
    return arr[0], arr[1], arr[2]

def input_i_array():
    return map(int, raw_input().split())

def get_max(n, arr):
    presum = [arr[0]]
    for i in range(1, n):
        presum.append(max(presum[i - 1], arr[i]))
    return presum

def calc(n):
    return n % 2

n = input_i()
print calc(n)
