Write a program that computes the difference between non-negative integers.
Each line of the input consists of a pair of integers. Each integer is between 0 and 1015 (inclusive). The input is terminated by end of file.
For each pair of integers in the input, output one line, containing the absolute value of their difference.
| Input | Output |
|---|---|
10 12
71293781758123 72784
1 12345677654321
|
2
71293781685339
12345677654320
|