This post is all about the solution of the "A. Technical Support" Codeforces Round #829 (Div. 2) Problem Statement.
Codeforces
Problem Statement :
Users collaborate in the department of quality control of a large firm's technical support. It is ones responsibility to ensure that all customer issues have been resolved.
Users must now review a replica of a conversation between such a client and a tech support manager. In accordance with the employment laws, each text from a client should be followed by one or more texts from a service manager. However, customers occasionally ask questions so rapidly that some of manager's responses to earlier questions appear after the customer has questioned a few new questions.
Because of the privacy strategy, the complete transcript of texts is not available to you; just the order of texts and the type of each are noticeable.
Format of Input :
Evey test includes a number of tests. The first category represents the number t (1t500) of tests. The testing phase are described below.
Evey test court's first category represents each numeric value n (1n100) — the total number of texts in the dialogue.
The second sentence of each testing ground contains n protagonists "P" and "B," which describe different types of messages in the dialogue in chronologically. The text with the patient's inquiry is denoted by personality "P," and the text with the technical support manager's reply is denoted by the character "B." The first personality in the line is assured to be "P."
Format of the Output :
For Every Test case display output as Yes or No.
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