#D5716. Yet Another Two Integers Problem
Yet Another Two Integers Problem
Yet Another Two Integers Problem
You are given two integers a and b.
In one move, you can choose some integer k from 1 to 10 and add it to a or subtract it from a. In other words, you choose an integer k ∈ [1; 10] and perform a := a + k or a := a - k. You may use different values of k in different moves.
Your task is to find the minimum number of moves required to obtain b from a.
You have to answer t independent test cases.
Input
The first line of the input contains one integer t (1 ≤ t ≤ 2 ⋅ 10^4) — the number of test cases. Then t test cases follow.
The only line of the test case contains two integers a and b (1 ≤ a, b ≤ 10^9).
Output
For each test case, print the answer: the minimum number of moves required to obtain b from a.
Example
Input
6 5 5 13 42 18 4 1337 420 123456789 1000000000 100500 9000
Output
0 3 2 92 87654322 9150
Note
In the first test case of the example, you don't need to do anything.
In the second test case of the example, the following sequence of moves can be applied: 13 → 23 → 32 → 42 (add 10, add 9, add 10).
In the third test case of the example, the following sequence of moves can be applied: 18 → 10 → 4 (subtract 8, subtract 6).
inputFormat
Input
The first line of the input contains one integer t (1 ≤ t ≤ 2 ⋅ 10^4) — the number of test cases. Then t test cases follow.
The only line of the test case contains two integers a and b (1 ≤ a, b ≤ 10^9).
outputFormat
Output
For each test case, print the answer: the minimum number of moves required to obtain b from a.
Example
Input
6 5 5 13 42 18 4 1337 420 123456789 1000000000 100500 9000
Output
0 3 2 92 87654322 9150
Note
In the first test case of the example, you don't need to do anything.
In the second test case of the example, the following sequence of moves can be applied: 13 → 23 → 32 → 42 (add 10, add 9, add 10).
In the third test case of the example, the following sequence of moves can be applied: 18 → 10 → 4 (subtract 8, subtract 6).
样例
6
5 5
13 42
18 4
1337 420
123456789 1000000000
100500 9000
0
3
2
92
87654322
9150