11223: 简单a-b问题

Memory Limit:128 MB Time Limit:1.000 S
Judge Style:Text Compare Creator:
Submit:2 Solved:0

Description

求a-b的绝对值,a,b都为整数.

Input

输入a b(a<1000 b<1000)

Output

输出a-b的绝对值,每个结果占一行

Sample Input Copy

1 2
2 3
800 1

Sample Output Copy

1
1
799