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H. A + B Strikes Back
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output

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