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:
# a1,a2=list(map(str,input().split()))
# b=a2.reverse()
# m=''
# for i in b:
#     m+=b
# print(int(a1)+int(m))
n, m = map(str, input().split())
x = list(m)
x.reverse()
s = ''
for el in x:
    s += el
print((int(n) + int(s)))