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Time Limit: 3 s Memory Limit: 500 MB Total points: 100

#7492. 即便看不到未来

统计

题目描述

珂朵莉给了你一个序列,每次查询一段区间中长度为 $1,2,\ldots,10$ 的极长值域连续段个数。 定义值域连续段为:

  • 把区间里面所有数排序后去重,设排序后得到的序列为 $b$。
  • 如果对于二元组 $(l,r)$ 满足 $b_l,b_{l+1},\ldots,b_r$ 中每个数为前一个数 $+1$。
  • 而且对于二元组 $(l,r+1)$,$(l-1,r)$ 均不满足,我们称 $(l,r)$ 为一个长度为 $r-l+1$ 的极长值域连续段。

输入格式

第一行两个整数 $n,m$,表示序列的长度和查询的次数。

之后一行 $n$ 个整数表示这个序列。

之后 $m$ 行每行两个整数 $l,r$ 表示查询的区间。

输出格式

对于每次询问,输出一个长度为 $10$ 的字符串,第 $i$ 个字符表示长度为 $i$ 的极长连续段个数 $\bmod 10$的结果。

样例 #1

样例输入 #1

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

样例输出 #1

1100000000
1000000000
1000000000
1000000000
0100000000
1000000000
2000000000
2000000000
1000000000

提示

Idea:nzhtl1477,Solution:nzhtl1477,Code:mcfx,Data:nzhtl1477

对于 $100\%$ 的数据,$1\leq n,m,a_i\leq10^6$,$1\leq l\leq r\leq n$。

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