GUPTA MECHANICAL

IN THIS WEBSITE I CAN TELL ALL ABOUT TECH. TIPS AND TRICKS APP REVIEWS AND UNBOXINGS ALSO TECH. NEWS .............

Thursday 21 July 2022

[Solution] Recover an RBS Codeforces Solution



C. Recover an RBS
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output

A bracket sequence is a string containing only characters "(" and ")". A regular bracket sequence (or, shortly, an RBS) is a bracket sequence that can be transformed into a correct arithmetic expression by inserting characters "1" and "+" between the original characters of the sequence. For example:

  • bracket sequences "()()" and "(())" are regular (the resulting expressions are: "(1)+(1)" and "((1+1)+1)");
  • bracket sequences ")(", "(" and ")" are not.

There was an RBS. Some brackets have been replaced with question marks. Is it true that there is

Solution Click Below:-  👉CLICK HERE👈
👇👇👇👇👇

 a unique way to replace question marks with brackets, so that the resulting sequence is an RBS?

Input

The first line contains a single integer t (1t5104) — the number of testcases.

Three Doors Codeforces Solution 2022

Also Try Minecraft Codeforces Solution

Recover an RBS Codeforces Solution

Rorororobot Codeforces Solution 

XOR Tree Codeforces Solution

Multiset of Strings Codeforces Solution

The only line of each testcase contains an RBS with some brackets replaced with question marks. Each character is either '(', ')' or '?'. At least one RBS can be recovered from the given sequence.

The total length of the sequences over all testcases doesn't exceed 2105.

Output

For each testcase, print "YES" if the way to replace question marks with brackets, so that the resulting sequence is an RBS, is unique. If there is more than one way, then print "NO".

No comments:

Post a Comment