수열과 쿼리 42 - Problem

#18800. 수열과 쿼리 42

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

長さ $N$ の数列 $A_1, A_2, \ldots, A_N$ が与えられる。数列の各要素は $1$ から $N$ までの相異なる整数である。以下のクエリを処理するプログラムを書け：

l r: $(A_l, A_{l+1}, \ldots, A_r)$ の最長増加部分列 (LIS) の長さを出力せよ。

入力

1行目には数列の長さ $N$ とクエリの個数 $Q$ が与えられる。

続く $Q$ 行には、それぞれ上記の形式のクエリが与えられる。

出力

各クエリに対して、答えを別の行に出力せよ。

入出力例

入力 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

出力 1

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