#P12817. [NERC 2021] Deletive Editing

[NERC 2021] Deletive Editing

题目描述

Daisy loves playing games with words. Recently, she has been playing the following Deletive Editing word game with Daniel.

Daisy picks a word, for example, DETERMINED\tt{DETERMINED}. On each game turn, Daniel calls out a letter, for example, E\tt{E}, and Daisy removes the first occurrence\textbf{the first occurrence} of this letter from the word, getting DTERMINED\tt{DTERMINED}. On the next turn, Daniel calls out a letter again, for example, D\tt{D}, and Daisy removes its first occurrence, getting TERMINED\tt{TERMINED}. They continue with I\tt{I}, getting TERMNED\tt{TERMNED}, with N\tt{N}, getting TERMED\tt{TERMED}, and with D\tt{D}, getting TERME\tt{TERME}. Now, if Daniel calls out the letter E\tt{E}, Daisy gets TRME\tt{TRME}, but there is no way she can get the word TERM\tt{TERM} if they start playing with the word DETERMINED\tt{DETERMINED}.

Daisy is curious if she can get the final word of her choice, starting from the given initial word, by playing this game for zero or more turns. Your task it help her to figure this out.

输入格式

The first line of the input contains an integer nn --- the number of test cases (1n100001 \le n \le 10\,000). The following nn lines contain test cases.

Each test case consists of two words ss and tt separated by a space. Each word consists of at least one and at most 30 uppercase English letters; ss is the Daisy's initial word for the game; tt is the final word that Daisy would like to get at the end of the game.

输出格式

Output nn lines to the output --- a single line for each test case. Output YES\tt{YES} if it is possible for Daisy to get from the initial word ss to the final word tt by playing the Deletive Editing game. Output NO\tt{NO} otherwise.

6
DETERMINED TRME
DETERMINED TERM
PSEUDOPSEUDOHYPOPARATHYROIDISM PEPA
DEINSTITUTIONALIZATION DONATION
CONTEST CODE
SOLUTION SOLUTION
YES
NO
NO
YES
NO
YES