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:
import collections as col
import itertools as its
import sys
import operator
from bisect import bisect_left, bisect_right
from copy import copy, deepcopy


class Solver:
    def __init__(self):
        pass
    
    def solve(self):
        a = [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]
        x = int(input())
        print(a[x - 1])


if __name__ == '__main__':
    s = Solver()
    s.solve()