I'm just wondering, since me and a lab facilitator had different views on the meaning of the specifications in flip, on quote "the flip tool finds the largest 8-connected region of pixels all of the same colour containing the selected pixel, then fli...

Hi, just wondering why the input time is taken into account in the total time. For flip, just processing the input takes about 5 seconds for a 1000x1000 grid, and the actual algorithm part takes about 8 seconds. All together it is over 10 seconds hen...

So once you flip a segment, you can return to the grid's beginning to revisit?

Working now, thanks.

Not OP, but submission did just work for me, thanks

Please try again now.

The previous student is correct. As has been mentioned before in various places, Python normally gives a Run-Error when hitting the memory limit. No, no students will be provided with additional test cases. Exploring test cases and finding bugs yourse...

Run errors (as opposed to wrong answers) on DOM judge are often due to hitting memory limits (1GB limit iirc), whereas on your own machine you might be able to allocate more than that. Might be worth seeing if your code creates a lot of memory for us...

Hi, for the 'flip' problem, my code works for all my test cases, but I get a run-error when submitting. I have also fuzzed it with a large number of random test cases for all row lengths, and column lengths, and the program still succeeds with no exce...

Hi, Exploring the properties of the problem space to find, understand, and fix your bugs is an intended part of the task. A good practice is to explore small, simple solutions and try to find the simplest input for which your algorithm is incorrect, so...

find.py My output matches the expected output provided in the question, but I m still receiving a 'wrong answer' message. I've also created a test case, and my solution successfully passes it. I understand that there are hidden test cases. How can I ...

Looks like there is a bug in cssubmit. I will see if I can find a fix. We're using a validation script to ensure that your project.txt is in the correct format. This is a feature that is support by cssubmit. However, there have been some changes to cs...

ANONYMOUS wrote I will make sure it is available up to the day of the last supplementary deferred exam.

Hi there, just tried submitting the project.txt file as I am done (well 100 points) but its coming up as validation unsuccessful. I followed the project.txt format instructions on the project page so there shouldn't be anything wrong with the file i...

As written in the project under Instructions "You may use the Python standard library. DOMjudge has been configured only to use the standard library, so if your solution runs on DOMjudge, then it is acceptable."

Are we allowed to use standard Python libraries for the project?

The other student who has replied is correct. It seems you misunderstood the problem statement and need to read it again more closely.

Misread afterall, thank you )

Forgot to mention, any white space in the middle that isn't (0,0) or the last row.

You flip the white space then it'll become a big black space with the other 3 black space. Then flip the big black space and it'll all become white