#P171A. Mysterious numbers - 1

    ID: 2342 Type: RemoteJudge 2000ms 256MiB Tried: 0 Accepted: 0 Difficulty: (None) Uploaded By: Tags>*special problemconstructive algorithms*1200

Mysterious numbers - 1

No submission language available for this problem.

Description

The input contains two integers a1, a2 (0 ≤ ai ≤ 109), separated by a single space.

Output a single integer.

Input

The input contains two integers a1, a2 (0 ≤ ai ≤ 109), separated by a single space.

Output

Output a single integer.

Samples

3 14

44

27 12

48

100 200

102