Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2)
D
Backspace
Codeforces
1500
原题
← CE →
翻译中…

You are given two strings $s$ and $t$, both consisting of lowercase English letters. You are going to type the string $s$ character by character, from the first character to the last one.

翻译中…

When typing a character, instead of pressing the button corresponding to it, you can press the "Backspace" button. It deletes the last character you have typed among those that aren't deleted yet (or does nothing if there are no characters in the current string). For example, if $s$ is "abcbd" and you press Backspace instead of typing the first and the fourth characters, you will get the string "bd" (the first press of Backspace deletes no character, and the second press deletes the character 'c'). Another example, if $s$ is "abcaa" and you press Backspace instead of the last two letters, then the resulting text is "a".

翻译中…

Your task is to determine whether you can obtain the string $t$, if you type the string $s$ and press "Backspace" instead of typing several (maybe zero) characters of $s$.

翻译中…

Input

翻译中…

The first line contains a single integer $q$ ($1 \le q \le 10^5$) — the number of test cases.

翻译中…

The first line of each test case contains the string $s$ ($1 \le |s| \le 10^5$). Each character of $s$ is a lowercase English letter.

翻译中…

The second line of each test case contains the string $t$ ($1 \le |t| \le 10^5$). Each character of $t$ is a lowercase English letter.

翻译中…

It is guaranteed that the total number of characters in the strings over all test cases does not exceed $2 \cdot 10^5$.

翻译中…

Output

翻译中…

For each test case, print "YES" if you can obtain the string $t$ by typing the string $s$ and replacing some characters with presses of "Backspace" button, or "NO" if you cannot.

翻译中…

You may print each letter in any case (YES, yes, Yes will all be recognized as positive answer, NO, no and nO will all be recognized as negative answer).

翻译中…

Note

翻译中…

Consider the example test from the statement.

翻译中…

In order to obtain "ba" from "ababa", you may press Backspace instead of typing the first and the fourth characters.

翻译中…

There's no way to obtain "bb" while typing "ababa".

翻译中…

There's no way to obtain "aaaa" while typing "aaa".

翻译中…

In order to obtain "ababa" while typing "aababa", you have to press Backspace instead of typing the first character, then type all the remaining characters.

翻译中…

样例

Input #1
4
ababa
ba
ababa
bb
aaa
aaaa
aababa
ababa
Output #1
YES
NO
NO
YES
InputCopy OutputCopy
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题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。