A + B Strikes Back

A + B is often used as an example of the easiest problem possible to show some contest platform. However, some scientists have observed that sometimes this problem is not so easy to get accepted. Want to try?

Input

The input contains two integers a and b (0 ≤ a, b ≤ 103), separated by a single space.

Output

Output the sum of the given integers.

Examples

Input

5 14

Output

19

Input

381 492

Output

873

inputFormat

Input

The input contains two integers a and b (0 ≤ a, b ≤ 103), separated by a single space.

outputFormat

Output

Output the sum of the given integers.

Examples

Input

5 14

Output

19

Input

381 492

Output

873

样例

381 492

873

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