Mysterious numbers - 1

Time Limit: 2 seconds

Memory Limit: 256 megabytes

Description

Input

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

Output

Output a single integer.

Sample Input

Input
3 14
Output
44
Input
27 12
Output
48
Input
100 200
Output
102

Sample Output

None

Hint

None

Source

None

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