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RMQSQ - Range Minimum Query |
You are given a list of N numbers and Q queries. Each query is specified by two numbers i and j; the answer to each query is the minimum number between the range [i, j] (inclusive).
Note: the query ranges are specified using 0-based indexing.
Input
The first line contains N, the number of integers in our list (N <= 100,000). The next line holds N numbers that are guaranteed to fit inside an integer. Following the list is a number Q (Q <= 10,000). The next Q lines each contain two numbers i and j which specify a query you must answer (0 <= i, j <= N-1).
Output
For each query, output the answer to that query on its own line in the order the queries were made.
Example
Input: 3
1 4 1
2
1 1
1 2 Output: 4
1
Added by: | Joshua Kirstein |
Date: | 2014-10-18 |
Time limit: | 3s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All |
hide comments
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2021-05-13 18:30:10
O(nlgn) preprocessing and O(1) query time using sparse Table :D |
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2021-05-13 14:43:40
Tried in 3 Ways . Way Used : 1> Segment Tree - 0.09 2> Sparse Table - 0.13 3> Square-root Decomposition - 0.07 Last edit: 2021-06-27 20:55:08 |
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2021-04-26 07:34:17
Those getting wrong answer at case 5 using SQRT decomposition just check if the left and right query both belongs to same block or not. If they belong to same block just travel linearly in the given array from L to R else you can go with SQRT decomposition. Last edit: 2021-04-26 07:35:13 |
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2021-04-20 17:17:48
I tried solving it using square root decomposition & got Wrong Answer. Pls tell me where I'm wrong. link: <snip> [Simes]: Please use the forum for this. Last edit: 2022-06-01 07:38:17 |
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2021-04-20 12:55:43
Anyone is struggling in this problem should watch Erricto's video. Much more detailed way of explanation using Sparse Table |
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2021-04-18 22:06:59
An easy and basic known problem in segment tree or sparse table. |
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2021-04-08 11:04:10
I am getting TLE with segment tree Last edit: 2021-04-08 11:05:38 |
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2021-04-02 11:52:51
square root decomposition in 0.15s |
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2021-03-24 08:08:17
Solved it using Centroid Decomposition in 0.88s |
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2021-03-02 16:22:46
I'm trying to do it using sqrt decomposition but getting SIGSEGV runtime error. But the sample test cases are working just fine. Can someone please help? |