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 PYTHON3):

Solution:
a = input()
a = int(a)
b = 1
i = 0
if (a >= 13):
    b = 8092
    a -= 13
while (i < a):
    b *= 2
    i += 1

print(b)