Volume Control

 Chef is watching TV. The current volume of the TV is 

X. Pressing the volume up button of the TV remote increases the volume by 1 while pressing the volume down button decreases the volume by 1. Chef wants to change the volume from X to Y

. Find the minimum number of button presses required to do so.

Input Format

• The first line contains a single integer T

- the number of test cases. Then the test cases follow.

The first and only line of each test case contains two integers X

and Y

• - the initial volume and final volume of the TV.

Output Format

For each test case, output the minimum number of times Chef has to press a button to change the volume from X

to Y

.

Constraints

• 1≤T≤100

1≤X,Y≤100

Sample Input 1

2
50 54
12 10

Sample Output 1

4
2

Explanation

Test Case 1: Chef can press the volume up button 4

times to increase the volume from 50 to 54

.

Test Case 2: Chef can press the volume down button 2

times to decrease the volume from 12 to 10.