1001. A+B Format (20)

Time Limit: 400ms

Memory Limit: 65536kB

Description

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
-1000000 9
Sample Output
-999,991

Input

None

Output

None

Sample Input

None

Sample Output

None

Hint

None

Source

PAT (Advanced Level) Practise

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