平衡子数组AI (CI翻译)
Problem Statement
题目描述
AI (CI翻译)You are given a sequence $A$ of $N$ positive integers.
Among the $\frac{N(N+1)}{2}$ non-empty (contiguous) subarrays of $A$, we call a sequence $X$ a balanced sequence if and only if it satisfies the following condition:
给定一个由 $N$ 个正整数组成的序列 $A$。
在 $A$ 的 $\frac{N(N+1)}{2}$ 个非空连续子数组中,如果一个序列 $X$ 满足以下条件,则称其为平衡序列:AI (CI翻译)
- Every integer appearing in
$X$appears the same number of times in$X$.
$X$中出现的每个整数出现次数都相同。
For each $k=1,2,\dots,K$, find the following two values:
对于每个 $k=1,2,\dots,K$,求以下两个值:AI (CI翻译)
- The number of balanced sequences in which each integer appears exactly
$B_k$times. - The number of balanced sequences in which exactly
$B_k$distinct integers appear.
- 每个整数恰好出现
$B_k$次的平衡序列数量。 - 恰好出现
$B_k$个不同整数的平衡序列数量。
Count two subarrays separately if they are taken from different positions in $A$, even if they are identical as sequences.
即使两个子数组作为序列完全相同,只要它们在 $A$ 中的起始位置不同,也要将它们分别计数。AI (CI翻译)
Solve $T$ test cases per input.
请解决输入中的 $T$ 组测试用例。AI (CI翻译)
Constraints
约束条件
AI (CI翻译)$1 \leq T \leq 2 \times 10^5$$1 \leq N \leq 2 \times 10^5$$1 \leq K \leq \min(N,10)$$1 \leq A_i \leq N$$1 \leq B_k \leq N$$B_1,B_2,\dots,B_K$are pairwise distinct.- The sum of
$N$over all test cases is at most$2 \times 10^5$. - All input values are integers.
$1 \leq T \leq 2 \times 10^5$$1 \leq N \leq 2 \times 10^5$$1 \leq K \leq \min(N,10)$$1 \leq A_i \leq N$$1 \leq B_k \leq N$$B_1,B_2,\dots,B_K$两两不同。- 所有测试用例的
$N$之和不超过$2 \times 10^5$。 - 所有输入值均为整数。
Input
输入格式
AI (CI翻译)The input is given from Standard Input in the following format:
输入从标准输入中读取,格式如下:AI (CI翻译)
T
\mathrm{case}_1
\mathrm{case}_2
\vdots
\mathrm{case}_T
T
\mathrm{case}_1
\mathrm{case}_2
\vdots
\mathrm{case}_TAI (CI翻译)
Each case is given in the following format:
每组测试用例的格式如下:AI (CI翻译)
N K
A_1 A_2 \dots A_N
B_1 B_2 \dots B_K
N K
A_1 A_2 \dots A_N
B_1 B_2 \dots B_KAI (CI翻译)
Output
输出格式
AI (CI翻译)Output the answers in the following format:
请按以下格式输出答案:AI (CI翻译)
\mathrm{case}_1
\mathrm{case}_2
\vdots
\mathrm{case}_T
\mathrm{case}_1
\mathrm{case}_2
\vdots
\mathrm{case}_TAI (CI翻译)
For each case, letting $c_{k,1}$ be the number of balanced sequences in which each integer appears exactly $B_k$ times, and $c_{k,2}$ be the number of balanced sequences in which exactly $B_k$ distinct integers appear, output in the following format:
对于每组测试用例,令 $c_{k,1}$ 表示每个整数恰好出现 $B_k$ 次的平衡序列数量,令 $c_{k,2}$ 表示恰好出现 $B_k$ 个不同整数的平衡序列数量,请按以下格式输出:AI (CI翻译)
c_{1,1} c_{1,2}
c_{2,1} c_{2,2}
\vdots
c_{K,1} c_{K,2}
c_{1,1} c_{1,2}
c_{2,1} c_{2,2}
\vdots
c_{K,1} c_{K,2}AI (CI翻译)
样例
3
4 2
1 2 1 2
2 1
1 1
1
1
7 7
1 5 5 1 5 1 2
1 2 3 4 5 6 7
1 4
7 4
1 1
13 8
3 8
1 1
0 0
0 0
0 0
0 0
题面与样例版权归 AtCoder 及出题人所有;中文翻译由 AI 生成(gpt-6.1-sol),如有出入请以原文为准。