A+B for Input-Output Practice 这是ACM杭大题库的一道题各位大哥大姐们谁知道答案啊?

A+B for Input-Output Practice 这是ACM杭大题库的一道题各位大哥大姐们谁知道答案啊?
Problem Description
Your task is to Calculate a + b.
Input
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.
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
2
1 5
10 20
Sample Output
6
30