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A. Mysterious numbers - 1
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output
Input

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

Output

Output a single integer.

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