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:
#-------------Program--------------
#----Kuzlyaev-Nikita-Codeforces----
#-------------Training-------------
#----------------------------------

r=[4, 22, 27, 58, 85, 94, 121, 166,
   202, 265, 274, 319, 346, 355, 378, 
   382, 391, 438, 454, 483, 517, 526, 
   535, 562, 576, 588, 627, 634, 636, 
   645, 648, 654, 663, 666, 690, 706, 
   728, 729, 762, 778, 825, 852, 861,
   895, 913, 915, 922, 958, 985, 1086,
   1111, 1165]
n=int(input())
print(r[n-1])