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 = int(input())

result = 1
for i in range(a):
    result = result * 2
    if i + 1 == 13:
        result -= 100
print(result)