#P171A. Mysterious numbers - 1

    ID: 7293 远端评测题 2000ms 256MiB 尝试: 0 已通过: 0 难度: 4 上传者: 标签>*special problemconstructive algorithms*1200

Mysterious numbers - 1

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.

3 14<br>
27 12<br>
100 200<br>
44<br>
48<br>
102<br>