PAT-Advanced-1001. A+B Format

Calculate a + b and output the sum in standard format — that is, the digits must be separated into groups of three by commas (unless there are less than four digits).

Input

Each input file contains one test case. Each case contains a pair of integers a and b where -1000000 <= a, b <= 1000000. The numbers are separated by a space.

Output

For each test case, you should output the sum of a and b in one line. The sum must be written in the standard format.

Sample Input

Sample Output


一道简简单单的A+B,无坑无难点,直接按照题目要求即可轻松AC。

代码如下:

发表评论

电子邮件地址不会被公开。 必填项已用*标注