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 pdb
import sys

file = sys.stdin
#file = open("test", "r")

str1, str2 = file.readline().rstrip().split()
p1 = str1
p2 = ""
for i in reversed(range(len(str2))):
        p2 += str2[i]

print int(p1) + int(p2)