A+B for InputOutput Practice (I) 
Time Limit: 1000ms, Special Time Limit:2500ms, Memory Limit:32768KB 
Total submit users: 1024, Accepted users: 921 
Problem 10361 :
No special judgement

Problem description 
Your task is to Calculate a + b.
Too easy?! Of course! I specially designed the problem for acm beginners.
You must have found that some problems have the same titles with this one, yes, all these problems were designed for the same aim.

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
10 20

Sample Output 
6
30

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