CF1142B Lynyrd Skynyrd
Description
Recently Lynyrd and Skynyrd went to a shop where Lynyrd bought a permutation $ p $ of length $ n $ , and Skynyrd bought an array $ a $ of length $ m $ , consisting of integers from $ 1 $ to $ n $ .
Lynyrd and Skynyrd became bored, so they asked you $ q $ queries, each of which has the following form: "does the subsegment of $ a $ from the $ l $ -th to the $ r $ -th positions, inclusive, have a subsequence that is a cyclic shift of $ p $ ?" Please answer the queries.
A permutation of length $ n $ is a sequence of $ n $ integers such that each integer from $ 1 $ to $ n $ appears exactly once in it.
A cyclic shift of a permutation $ (p_1, p_2, \ldots, p_n) $ is a permutation $ (p_i, p_{i + 1}, \ldots, p_{n}, p_1, p_2, \ldots, p_{i - 1}) $ for some $ i $ from $ 1 $ to $ n $ . For example, a permutation $ (2, 1, 3) $ has three distinct cyclic shifts: $ (2, 1, 3) $ , $ (1, 3, 2) $ , $ (3, 2, 1) $ .
A subsequence of a subsegment of array $ a $ from the $ l $ -th to the $ r $ -th positions, inclusive, is a sequence $ a_{i_1}, a_{i_2}, \ldots, a_{i_k} $ for some $ i_1, i_2, \ldots, i_k $ such that $ l \leq i_1 < i_2 < \ldots < i_k \leq r $ .
Input Format
The first line contains three integers $ n $ , $ m $ , $ q $ ( $ 1 \le n, m, q \le 2 \cdot 10^5 $ ) — the length of the permutation $ p $ , the length of the array $ a $ and the number of queries.
The next line contains $ n $ integers from $ 1 $ to $ n $ , where the $ i $ -th of them is the $ i $ -th element of the permutation. Each integer from $ 1 $ to $ n $ appears exactly once.
The next line contains $ m $ integers from $ 1 $ to $ n $ , the $ i $ -th of them is the $ i $ -th element of the array $ a $ .
The next $ q $ lines describe queries. The $ i $ -th of these lines contains two integers $ l_i $ and $ r_i $ ( $ 1 \le l_i \le r_i \le m $ ), meaning that the $ i $ -th query is about the subsegment of the array from the $ l_i $ -th to the $ r_i $ -th positions, inclusive.
Output Format
Print a single string of length $ q $ , consisting of $ 0 $ and $ 1 $ , the digit on the $ i $ -th positions should be $ 1 $ , if the subsegment of array $ a $ from the $ l_i $ -th to the $ r_i $ -th positions, inclusive, contains a subsequence that is a cyclic shift of $ p $ , and $ 0 $ otherwise.
Explanation/Hint
In the first example the segment from the $ 1 $ -st to the $ 5 $ -th positions is $ 1, 2, 3, 1, 2 $ . There is a subsequence $ 1, 3, 2 $ that is a cyclic shift of the permutation. The subsegment from the $ 2 $ -nd to the $ 6 $ -th positions also contains a subsequence $ 2, 1, 3 $ that is equal to the permutation. The subsegment from the $ 3 $ -rd to the $ 5 $ -th positions is $ 3, 1, 2 $ , there is only one subsequence of length $ 3 $ ( $ 3, 1, 2 $ ), but it is not a cyclic shift of the permutation.
In the second example the possible cyclic shifts are $ 1, 2 $ and $ 2, 1 $ . The subsegment from the $ 1 $ -st to the $ 2 $ -nd positions is $ 1, 1 $ , its subsequences are not cyclic shifts of the permutation. The subsegment from the $ 2 $ -nd to the $ 3 $ -rd positions is $ 1, 2 $ , it coincides with the permutation. The subsegment from the $ 3 $ to the $ 4 $ positions is $ 2, 2 $ , its subsequences are not cyclic shifts of the permutation.