题目描述
Compute A + B.
Constraints
- -1000 ≤ A, B ≤ 1000
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. The input will be terminated by EOF.
Output
For each pair of input integers A and B, you must output the sum of A and B in one line.
Example
Input
1 2
10 5
100 20
Output
3
15
120
输入格式
见题面
输出格式
见题面
样例输入
1 2
10 5
100 20
样例输出
3
15
120