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ANARC05H - Chop Ahoy! Revisited! |
Given a non-empty string composed of digits only, we may group these digits into sub-groups (but maintaining their original order) if, for every sub-group but the last one, the sum of the digits in a sub-group is less than or equal to the sum of the digits in the sub-group immediately on its right. Needless to say, each digit will be in exactly one sub-group.
For example, the string 635 can only be grouped in one sub-group [635] or in two sub-groups as follows: [6-35] (since 6 < 8.) Another example is the string 1117 which can be grouped in one sub-group [1117] or as in the following: [1-117], [1-1-17], [1-11-7], [1-1-1-7], [11-17] and [111-7] but not any more, hence the total number of possibilities is 7.
Write a program that computes the total number of possibilities of such groupings for a given string of digits.
Input
Your program will be tested on a number of test cases. Each test case is specified on a separate line. Each line contains a single string no longer than 25, and is made of decimal digits only.
The end of the test cases is identified by a line made of the word "bye" (without the quotes.) Such line is not part of the test cases.
Output
For each test case, write the result using the following format:
k. n
where k is the test case number (starting at 1) and n is the result of this test case.
Example
Input: 635 1117 9876 bye Output: 1. 2 2. 7 3. 2
Added by: | psetter |
Date: | 2009-07-05 |
Time limit: | 1s-2s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ERL JS-RHINO NODEJS PERL6 VB.NET |
Resource: | ANARC 2005 |
hide comments
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2018-02-14 06:49:39 Divyam Shah
There are no overlapping subproblems , hence it is not a DP problem. The tag is incorrect. |
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2017-12-25 18:12:03
AC in one go..!! love DP ;) Last edit: 2017-12-25 18:12:19 |
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2017-12-20 19:31:41
dp with bit - n^2 log(n) solution |
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2017-12-09 15:18:22
very simple problem , just think recursion , no need of memorization |
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2017-07-10 09:54:01
don't know about the strictness of the test cases but I used DP, and feeling even more confident than if I had solved it through recursion with memoization. |
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2017-06-01 09:04:52 sonu
only recursion will do!! |
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2017-05-09 08:55:00
I wasted 10+ WA- on this piece of shit problem because getline() was getting some random crap at the end of the string |
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2017-03-23 14:58:06
nice DP |
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2017-03-05 11:42:23
Recursion pass.... |
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2017-01-08 08:08:27
Even simple recursion manages to get accepted xD xD |