#描述#
测试

#格式#
##输入格式##
Input contains an integer N in the first line, and then N lines follow. Each line consists of a pair 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##

2
1 5
10 20

##样例输出1##

6
30

#限制#
1000ms
32768KB

#提示#

#来源#
HDU