Time Limit : 1 Second

Memory Limit : 128 MB

Submission: 9776

Solved: 5081

Description
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 in one line,and with one line of output for each line in input.
sample input
1 5
sample output
6
hint
source
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