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 PYTHON):

Solution:
import sys
import copy
from collections import Counter
sys.setrecursionlimit(11111)
import re
import itertools

a,b = sys.stdin.readline().strip().split()
print int(a) + int(b[::-1])