A14244 | Double-ended Strings

You are given the strings $a$ and $b$ , consisting of lowercase Latin letters. You can do any number of the following operations in any order:

- if $|a| > 0$ (the length of the string $a$ is greater than zero), delete the first character of the string $a$ , that is, replace $a$ with $a_2 a_3 \ldots a_n$ ;
- if $|a| > 0$ , delete the last character of the string $a$ , that is, replace $a$ with $a_1 a_2 \ldots a_{n-1}$ ;
- if $|b| > 0$ (the length of the string $b$ is greater than zero), delete the first character of the string $b$ , that is, replace $b$ with $b_2 b_3 \ldots b_n$ ;
- if $|b| > 0$ , delete the last character of the string $b$ , that is, replace $b$ with $b_1 b_2 \ldots b_{n-1}$ .

Note that after each of the operations, the string $a$ or $b$ may become empty.

For example, if $a=$ "hello" and $b=$ "icpc", then you can apply the following sequence of operations:

- delete the first character of the string $a$ $\Rightarrow$ $a=$ "ello" and $b=$ "icpc";
- delete the first character of the string $b$ $\Rightarrow$ $a=$ "ello" and $b=$ "cpc";
- delete the first character of the string $b$ $\Rightarrow$ $a=$ "ello" and $b=$ "pc";
- delete the last character of the string $a$ $\Rightarrow$ $a=$ "ell" and $b=$ "pc";
- delete the last character of the string $b$ $\Rightarrow$ $a=$ "ell" and $b=$ "p".

For the given strings $a$ and $b$ , find the minimum number of operations for which you can make the strings $a$ and $b$ equal. Note that empty strings are also equal.

The first line contains a single integer $t$ ( $1 \le t \le 100$ ). Then $t$ test cases follow.

The first line of each test case contains the string $a$ ( $1 \le |a| \le 20$ ), consisting of lowercase Latin letters.

The second line of each test case contains the string $b$ ( $1 \le |b| \le 20$ ), consisting of lowercase Latin letters.

For each test case, output the minimum number of operations that can make the strings $a$ and $b$ equal.