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KQUERYO - K-Query Online |
Given a sequence of n numbers a1, a2, ..., an and a number of k-queries. A k-query is a triple (i, j, k) (1 ≤ i ≤ j ≤ n). For each k-query (i, j, k), you have to return the number of elements greater than k in the subsequence ai, ai+1, ..., aj.
Input
- Line 1: n (1 ≤ n ≤ 30000).
- Line 2: n numbers a1, a2, ..., an (1 ≤ ai ≤ 109).
- Line 3: q (1 ≤ q ≤ 200000), the number of k- queries.
- In the next q lines, each line contains 3 numbers a, b, c representing a k-query. You should do the following:
- i = a xor last_ans
- j = b xor last_ans
- k = c xor last_ans
Where last_ans = the answer to the last query (for the first query it's 0).
Output
For each k-query (i, j, k), print the number of elements greater than k in the subsequence ai, ai+1, ..., aj in a single line.
Example
Input: 6 8 9 3 5 1 9 5 2 3 5 3 3 7 0 0 11 0 0 2 3 7 4 Output: 1 1 0 0 2
[Edited by EB]
There are invalid queries. Assume the following:- if i < 1: i = 1
- if j > n: j = n
- if i > j: ans = 0
Added by: | amirmd76 |
Date: | 2015-04-17 |
Time limit: | 0.200s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All |
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2016-01-21 04:30:15 [Rampage] Blue.Mary
OK. The test data seems not satisfy the conditions mentioned in problem description. I assume the following: if i<1: i = 1 if j>n: j = n if i>j: res->0 |
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2015-12-27 18:45:27
merge sort tree..with fast I/O = 3rd fastest solution ^_^ |
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2015-09-02 04:38:34
Merge Sort Tree gives AC in first time while Persistent Segment Tree giving the Segmentation Fault In the sample input fourth query becomes (0,0) where constraint of 1<=i,j<=n gets violated while doing such on Merge Sort Tree it automatically gets handle, but on the Persistent Segment Tree it is accessing the wrong memory bounds This question made me learn several things, but please correct the input/output Regards, KhooniCoder |
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2015-09-01 11:22:33 Pulkit Singhal
Can someone please explain sample test case 4th and 5th query |
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2015-05-08 17:48:26 mehmetin
Sample test cases are correct. There was a broken input issue, that was the reason of TLE's. Last edit: 2015-05-14 17:28:54 |
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2015-05-07 06:37:04 kuldeep yadav
Accepted in 1 try |
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2015-05-07 05:58:21 kuldeep yadav
Test case is wrong Last edit: 2015-05-07 06:36:27 |
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2015-04-30 18:42:10
isn't 0 0 0 1 1 the right answer for the test case? |
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2015-04-24 16:07:07 Rajat De
why is O(sqrt(n) ) per query failing ? it should pass |
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2015-04-21 12:40:20 adamant
Are you kidding?! simply return 0 gets AC :| |