CF1860A.Not a Substring

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通过率:0%

时间限制:2.00s

内存限制:256MB

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题目描述

A bracket sequence is a string consisting of characters '(' and/or ')'. A regular bracket sequence 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 (they can be transformed into "(1)+(1)" and "((1+1)+1)", respectively);
  • bracket sequences ")(", "(" and ")" are not regular.

You are given a bracket sequence ss; let's define its length as nn. Your task is to find a regular bracket sequence tt of length 2n2n such that ss does not occur in tt as a contiguous substring, or report that there is no such sequence.

括号序列是由字符 '(' 和/或 ')' 组成的字符串。正则括号序列(regular bracket sequence)是指:通过在原序列的字符之间插入字符 '1' 和 '+',可将其转化为一个合法的算术表达式的括号序列。例如:

  • 括号序列 "()()" 和 "(())" 是正则的(它们可分别转化为 "(1)+(1)" 和 "((1+1)+1)");
  • 括号序列 ")(", "(" 和 ")" 不是正则的。

给定一个括号序列 ss;设其长度为 nn。你的任务是:构造一个长度为 2n2n 的正则括号序列 tt,使得 ss 不作为连续子串出现在 tt 中;若不存在这样的序列,则报告无解。

输入格式

The first line contains a single integer tt (1≤t≤10001 \le t \le 1000) — the number of test cases.

The only line of each test case contains a string ss (2≤∣s∣≤502 \le |s| \le 50), consisting of characters "(" and/or ")".

第一行包含一个整数 tt(1≤t≤10001 \le t \le 1000)——测试用例的数量。

每个测试用例仅有一行,包含一个字符串 ss(2≤∣s∣≤502 \le |s| \le 50),由字符 "(" 和/或 ")" 组成。

输出格式

For each test case, print the answer to it. If there is no required regular bracket sequence, print NO in a separate line. Otherwise, print YES in the first line, and the required regular bracket sequence tt itself in the second line. If there are multiple answers — you may print any of them.

对于每个测试用例,输出其答案。如果不存在所要求的合法括号序列,则在单独一行中输出 NO。否则,在第一行输出 YES,在第二行输出所要求的合法括号序列 tt 本身。如果存在多个满足条件的答案,你可以输出其中任意一个。

输入输出样例

  • 输入#1

    4
    )(
    (()
    ()
    ))()

    输出#1

    YES
    (())
    YES
    ()()()
    NO
    YES
    ()(()())

输入解题思路,AI测评打分。不知道怎么写?

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