数列与查询42 - 문제

#18800. 数列与查询42

통계

이 문제는 다음 대회에서 사용되었습니다:

Query on a Sequence ("수열과 쿼리")

AI Translation — This statement was translated using AI and may contain inaccuracies. Please refer to the original statement if in doubt.

给定一个长度为 $N$ 的序列 $A_1, A_2, \ldots, A_N$。序列中的每个元素都是 $1$ 到 $N$ 之间互不相同的整数。请编写一个程序执行以下查询：

l r：输出 $(A_l, A_{l+1}, \ldots, A_r)$ 的最长递增子序列（LIS）的长度。

输入格式

第一行包含序列的长度 $N$ 和查询的数量 $Q$。

接下来 $Q$ 行，每行给出一个如上所述的查询。

输出格式

对每个查询，输出一行答案。

样例

样例输入 1

9 10
6 9 4 2 1 5 7 8 3
1 9
2 8
3 7
4 6
5 5
1 5
2 6
3 7
4 8
5 9

样例输出 1

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