No submission language available for this problem.

Background

Special for beginners, ^_^

Description

输入两个整数，输出这两个整数的和。

Format

Input

一行两个整数 a，b ( 0 < a, b <= 2000000000)

Output

一行一个整数表示结果

Samples

123 500

623

Limitation

1s, 1024KiB for each test case.