A+B for Input-Output Practice (VII)
Problem 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 Input1 5
10 20
Sample Output6
30
Author lcy