题目描述
Problem Statement
Let us define a correct parenthesis sequence as a string that satisfies one of the following conditions.
- It is an empty string.
- It is a concatenation of (, A, ), in this order, for some correct parenthesis sequence A.
- It is a concatenation of A, B, in this order, for some correct parenthesis sequences A and B.
We have a string S of length N consisting of ( and ).
Given $Q queries \text{Query}_1,\text{Query}_2,\ldots,\text{Query}_Q,$ process them in order. There are two kinds of queries, with the following formats and content.
- 1 l r: Swap the l-th and r-th characters of S.
- 2 l r: Determine whether the contiguous substring from the l-th through the r-th character is a correct parenthesis sequence.
Input
Input is given from Standard Input in the following format:
N Q
S
$\text{Query}_1$
$\text{Query}_2$
$\vdots$
$\text{Query}_Q$
Output
For each query in the format 2 l r, print Yes if the contiguous substring is a correct parenthesis sequence, and No otherwise, followed by a newline.
Constraints
- $1 \leq N,Q \leq 2 \times 10^5$
- S is a string of length N consisting of ( and ).
- $1 \leq l < r \leq N$
- N,Q,l,r are all integers.
- Each query is in the format 1 l r or 2 l r.
- There is at least one query in the format 2 l r.
Sample Input 1
5 3
(())(
2 1 4
2 1 2
2 4 5
Sample Output 1
Yes
No
No
In the first query, (()) is a correct parenthesis sequence.
In the second query, (( is not a correct parenthesis sequence.
In the third query, )( is not a correct parenthesis sequence.
Sample Input 2
5 3
(())(
2 1 4
1 1 4
2 1 4
Sample Output 2
Yes
No
In the first query, (()) is a correct parenthesis sequence.
In the second query, S becomes )()((.
In the third query, )()( is not a correct parenthesis sequence.
Sample Input 3
8 8
(()(()))
2 2 7
2 2 8
1 2 5
2 3 4
1 3 4
1 3 5
1 1 4
1 6 8
Sample Output 3
Yes
No
No
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分