HMLIS - HowManyLis
The task is simply to find LIS and number of way we can select distinct LIS
LIS (short for Longest Increasing Subsequence) is the longest subsequence of the sequence in which every element in the subsequence is increasing.
A LIS is distinct when one of the element come from different index of the beginning array.
This task involves finding length of Longest IS and number of ways LIS can be made.
Input
First line: integer Nrepresent number of elements in the sequence N <= 100000.
Second line: N integers represent number in the sequence, each integer is in the range [1, 100000000].
Output
2 integer in 1 line, Length of LIS and Number of LIS that can be made.
The answers can be very large, so print both answers mod 1000000007.
Examples
Input: 5 1 3 2 5 4 Output: 3 4
Input: 5 1 2 5 3 3 Output: 3 3
Explanation
In the first test case, the subsequence are (1, 3, 5), (1, 3, 4), (1, 2, 5), (1, 2, 4). In the second test case, the subsequence are (1, 2, 5), (1, 2, 3), (1, 2, 3). Note that there are two 3s in the sequence which both count separately.hide comments
harsh_bhar0629:
2024-04-20 16:43:35
Nice Question of Segment Tree(query-on-prefix-array) |
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sxie12:
2022-09-11 09:57:55
Why is the time limit so strict? O(N log N) with the recursive version of the data structure TLEs.
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changyouren:
2021-10-01 11:27:07
think brute force and optimize |
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miloy23:
2021-06-28 07:51:13
any hints for this problem? |
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shervi:
2020-05-13 11:19:42
just need to care about the count. Last edit: 2020-05-19 08:13:06 |
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my99n:
2020-03-09 17:28:44
Sorry, first problem. |
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Francky:
2020-03-08 19:13:27
@psetter : you should have let a new comment after the fix of your issue, and not hide previous comments.
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wisfaq:
2020-03-06 22:33:26
What is the waiting for, admins?
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Simes:
2020-03-03 17:38:24
My my, how can we resist you? |
Added by: | Touch |
Date: | 2020-02-26 |
Time limit: | 0.100s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All |