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:
'''
    Auther: ghoshashis545 Ashis Ghosh
    College: jalpaiguri Govt Enggineerin College
    Date:30/03/2020
'''
from math import gcd,sqrt,ceil
def ii():return int(input())
def mi():return map(int,input().split())
def li():return list(mi())
def si():return input()


def main():
    
    
    
    
    
    
    
    a,b=mi()
    s=list(str(b))
    s.reverse()
    s="".join(s)
    print(a+int(s))
    
    
    
    
if __name__ =="__main__":
    main()