1007 : A+B for Input-Output Practice (VII)

Your task is to Calculate a + b.

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

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

1 5
10 20

6

30
 

基础