A and B

题意翻译

### 题意 有二整数 $a$ 和 $b$。你可以执行无数次操作，使得 $a$ 与 $b$ 相等。 操作如下：对于第 $k$ 次操作，你可以让 $a$ 或 $b$ 增加 $k$。 求使得 $a$ 和 $b$ 相等的最少操作数。 ### 输入格式 **本题输入中包含多组数据**。 第一行一个整数 $T$，表示数据组数。 对于每组数据：一行两个整数 $a$ 和 $b$。 ### 输出格式 对于每一组数据，输出一行一个数表示操作的最小次数。 ### 数据范围 $1 \leq T \leq 100$ $1 \leq a,b \leq 10^9$

题目描述

You are given two integers $ a $ and $ b $ . You can perform a sequence of operations: during the first operation you choose one of these numbers and increase it by $ 1 $ ; during the second operation you choose one of these numbers and increase it by $ 2 $ , and so on. You choose the number of these operations yourself. For example, if $ a = 1 $ and $ b = 3 $ , you can perform the following sequence of three operations: 1. add $ 1 $ to $ a $ , then $ a = 2 $ and $ b = 3 $ ; 2. add $ 2 $ to $ b $ , then $ a = 2 $ and $ b = 5 $ ; 3. add $ 3 $ to $ a $ , then $ a = 5 $ and $ b = 5 $ . Calculate the minimum number of operations required to make $ a $ and $ b $ equal.

输入输出格式

输入格式

The first line contains one integer $ t $ ( $ 1 \le t \le 100 $ ) — the number of test cases. The only line of each test case contains two integers $ a $ and $ b $ ( $ 1 \le a, b \le 10^9 $ ).

输出格式

For each test case print one integer — the minimum numbers of operations required to make $ a $ and $ b $ equal.

输入输出样例

输入样例 #1

3
1 3
11 11
30 20

输出样例 #1

3
0
4

说明

First test case considered in the statement. In the second test case integers $ a $ and $ b $ are already equal, so you don't need to perform any operations. In the third test case you have to apply the first, the second, the third and the fourth operation to $ b $ ( $ b $ turns into $ 20 + 1 + 2 + 3 + 4 = 30 $ ).