Need help with algorithm
PLEASE HELP ME
Problem Statement
You are given an array of integers. You need to implement a data structure that supports the following operations in O(log n) time:
Range Sum [L, R] (0‑indexed). Return the sum of all elements in the subarray from index L to R inclusive.
Insert element x at position pos. After insertion, x must be located at index pos. (Constraints: |x| ≤ 3⋅10^4, 0 ≤ pos ≤ current array size).
Delete element at position pos. (Constraints: 0 ≤ pos < current array size).
Assign value x to all elements in [L, R]. (Constraints: |x| ≤ 3⋅10^4, 0 ≤ L ≤ R < current array size).
Add value x to all elements in [L, R]. (Constraints: |x| ≤ 3⋅10^4, 0 ≤ L ≤ R < current array size).
Apply next_permutation to subarray [L, R]. Works exactly like the STL algorithm:
Example: next_permutation([4,3,2,1]) = [1,2,3,4].
Apply prev_permutation to subarray [L, R]. Works exactly like the STL algorithm:
Example: prev_permutation([1,2,2,2,3,3,4]) = [4,3,3,2,2,2,1].
It is guaranteed that all queries are valid with respect to the current array size.
Input Format
First line: integer n (1 ≤ n ≤ 3⋅10^4) — the number of elements in the array.
Second line: n integers (each |a[i]| ≤ 3⋅10^4) — the initial array.
Third line: integer q (1 ≤ q ≤ 10^5) — the number of queries.
Next q lines: each line contains one query in one of the formats described above.
Output Format
For each query of type 1 (range sum), output the result on a separate line.
After processing all queries, output the final state of the array in one line.
Example
Input
7
1 2 3 4 5 6 7
8
4 5 1 3
2 3 3
5 2 0 4
7 0 6
6 0 3
3 2
1 1 5
1 0 6
Output
28
40
5 3 7 6 7 5 7
I can't solve this problem, and for some reason, no neural network can help me. I have my own code, but it doesn't work on the 5th test, and it displays a limited time issue.
I can't solve this
3 Replies
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Hey @Dimir! Please useTIP: Narrow down your issue to simple and precise questions to maximize the chance that others will reply in here./closeor theClose Postbutton above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically marked as dormant after 300 minutes of inactivity.
here's my code, if you need
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