Problem: <image>

Input

The input contains two integers a1, a2 (0 ≤ ai ≤ 32), separated by a single space.

Output

Output a single integer.

Examples

Input

1 1


Output

0


Input

3 7


Output

0


Input

13 10


Output

1

Solution (in PYTHON3):

Solution:
import math
import re
from fractions import Fraction
from collections import Counter

class Task:
    a, b = 0, 0
    answer = 0
    
    def __init__(self):
        self.a, self.b = [x for x in input().split()]

    def solve(self):
        a, b = self.a, self.b
        self.answer = int(a) + int(b[::-1])

    def printAnswer(self):
        print(self.answer)

task = Task()
task.solve()
task.printAnswer()