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:
import math
n = input()
ans = 1
for x in range(n):
    ans <<= 1
    if x == 12:
        ans -= 100
print ans