Problem 207. hackathon impossible

Created by Alfonso Nieto-Castanon

You might have found a solution to our previous hackathon entry, or its sequel but do you think you can do that (yet) again?

As before, I am thinking of a number between 1 and 10000... can you guess what this number is?

Description

The test suite has random entries. Your job is to find a hack and have your function return the correct answer.

notes

Neither the @bmtran's evalin trick nor a lookup table nor the solution to our previous hackathon entries would work here...

Problem Group

Community

Solve This Now!

25 solvers submitted 313 solutions (12.52 solutions/solver).

Solution Map Solution List Solvers

Problem Comments

2 Comments

Alan Chalker on 21 Feb 2012

There is something very strange about the contest system RandStream... it keeps reverting to a 'legacy' mode randomly. I submitted the same solution several times in a row and kept getting an error since the legacy mode has the State in a cell format. Finally I lucked out and got it to default back to the standard format.

Alfonso Nieto-Castanon on 21 Feb 2012

I observed the same effect, it is rather interesting, my guess was that other people submissions including rand('state',...) commands might be producing this (I imagine we should be sharing a matlab session for this to happen, the context might be running on some sort of distributed environment, I am not sure about the details...)

Solution Comments

Solution 126474

1 Comment

Óscar on 11 Aug 2012

It can be done in Size=1

Solution 21307

2 Comments

@bmtran on 1 Feb 2012

your hacking skills are unmistakable *bow*

Alfonso Nieto-Castanon on 1 Feb 2012

this +1

Solution 20858

4 Comments

Show 1 older comment

S L on 1 Feb 2012

I'm not sure this code is always right because the help says that I should not depend on the format of State property.

S L on 1 Feb 2012

I'm not sure this code is always correct because the help says that I should not depend on the format of State property.