Your task is to Calculate a + b.

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. 

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. 

2
1 5
10 20

6
30

基础