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 sys
input = sys.stdin.readline

def inp():
    return(int(input()))
def inlt():
    return(list(map(int,input().split())))
def reverse_number(n):
    r = 0
    while n > 0:
        r *= 10
        r += n % 10
        n //= 10
    return r
m, s = inlt()
print(m + reverse_number(s))