Problem K: A+B for Input-Output Practice (VII)

Problem K: A+B for Input-Output Practice (VII)

Time Limit: 1 Sec  Memory Limit: 64 MB
Submit: 1051  Solved: 567
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Description

Your task is to Calculate a + b.


Input

The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.

Output

For each pair of input integers a and b you should output the sum of a and b, and followed by a blank line.

Sample Input Copy

1 5
10 20

Sample Output Copy

6

30

HINT

末尾换2个换行符