天地之羽

Problem DescriptionYour task is to Calculate a + b.
InputThe input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.
OutputFor 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

Authorlcy RecommendJGShining
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