#描述#
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.

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

##输出格式##
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.

#样例1#
##样例输入1##

1 5
10 20

##样例输出1##

6
30

#限制#
1000ms
32768KB

#提示#

#来源#