Comparing Permutations of Subarrays Problem

Правка en1, от vamaddur, 2017-07-05 10:55:21

We are given an array of size N and Q queries (1 <= N, Q <= 100000). Each query has 4 parameters: index i, index j, length L, and differences D (0 <= D <= 1). We must answer "YES" if a permutation of the subarray from arr[i] to arr[i+L-1] differs from a permutation of the subarray from arr[j] to arr[j+L-1] in at most D places, and "NO" otherwise.

This sounds like an offline segment tree problem, but I am not sure how to start implementing it.

Can someone give me some hints to get me started and moving in the right direction?

Please help, and thanks in advance!

Теги offline query, segment tree, permutation, subarray

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  Rev. Язык Кто Когда Δ Комментарий
en3 Английский vamaddur 2017-07-06 12:14:20 81
en2 Английский vamaddur 2017-07-06 08:17:07 139
en1 Английский vamaddur 2017-07-05 10:55:21 618 Initial revision (published)