Problem: 

Input

The input contains a single integer a (0 ≤ a ≤ 35).

Output

Output a single integer.

Examples

Input

3


Output

8


Input

10


Output

1024

Solution (in PYTHON):

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