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:
s = "Washington / Adams / Jefferson / Madison / Monroe / Adams / Jackson / Van Buren / Harrison / Tyler / Polk / Taylor / Fillmore / Pierce / Buchanan / Lincoln / Johnson / Grant / Hayes / Garfield / Arthur / Cleveland / Harrison / Cleveland / McKinley / Roosevelt / Taft / Wilson / Harding / Coolidge / Hoover / Roosevelt / Truman / Eisenhower / Kennedy / Johnson / Nixon / Ford / Carter / Reagan / Bush / Clinton / Obama"

s = s.split(" / ")

i = int(raw_input())

print s[i - 1]