CSU-ACM Online Judge

1000: A+B (I)

      Time Limit: 1 Sec     Memory Limit: 128 Mb     Submitted: 12100     Solved: 3226    

Description

Your task is to Calculate a + b.

Input

Input contains multiple test cases. Each test case consists of a pair of integers a and b ( 0 <= a, b <= 20 ), 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

1 1

Sample Output

2

Hint

Source

中南大学第五届大学生程序设计竞赛-热身赛