A13122. Two Bracket Sequences
编程题
普及/提高-
知识点
题目描述
You are given two bracket sequences (not necessarily regular) $s$ and $t$ consisting only of characters '(' and ')'. You want to construct the shortest regular bracket sequence that contains both given bracket sequences as subsequences (not necessarily contiguous).
Recall what is the regular bracket sequence:
- () is the regular bracket sequence;
- if $S$ is the regular bracket sequence, then ( $S$ ) is a regular bracket sequence;
- if $S$ and $T$ regular bracket sequences, then $ST$ (concatenation of $S$ and $T$ ) is a regular bracket sequence.
Recall that the subsequence of the string $s$ is such string $t$ that can be obtained from $s$ by removing some (possibly, zero) amount of characters. For example, "coder", "force", "cf" and "cores" are subsequences of "codeforces", but "fed" and "z" are not.
Recall what is the regular bracket sequence:
- () is the regular bracket sequence;
- if $S$ is the regular bracket sequence, then ( $S$ ) is a regular bracket sequence;
- if $S$ and $T$ regular bracket sequences, then $ST$ (concatenation of $S$ and $T$ ) is a regular bracket sequence.
Recall that the subsequence of the string $s$ is such string $t$ that can be obtained from $s$ by removing some (possibly, zero) amount of characters. For example, "coder", "force", "cf" and "cores" are subsequences of "codeforces", but "fed" and "z" are not.
输入格式
The first line of the input contains one bracket sequence $s$ consisting of no more than $200$ characters '(' and ')'.
The second line of the input contains one bracket sequence $t$ consisting of no more than $200$ characters '(' and ')'.
The second line of the input contains one bracket sequence $t$ consisting of no more than $200$ characters '(' and ')'.
输出格式
Print one line — the shortest regular bracket sequence that contains both given bracket sequences as subsequences (not necessarily contiguous). If there are several answers, you can print any.
输入输出样例
输入 #1
(())(() ()))()
输出 #1
(())()()
输入 #2
) ((
输出 #2
(())
输入 #3
) )))
输出 #3
((()))
输入 #4
()) (()(()(()(
输出 #4
(()()()(()()))