Langton's ant - Can't pass "Checkerboard" validator


#1

Hello,
As the title says, I’m in trouble passing the “Checkerboard” validator on this problem: Langtons 'ant
I successfully pass all the tests, including the big one with lots of turns, so I guess it’s not a performance problem. Since I pass all the tests, I don’t know what’s wrong with my algorithm…?


#2

Same problem for me. I am coding in C
Some pb with the input I guess.
I found a workaround for other puzzles but not yet for this one.

By the way the description on the overview page is not displayed properly.


#3

Most of the times, the validators of puzzles made by CodinGame are just a symmetry of the IDE tests. Maybe you mixed up x and y like Eldoir did?


#4

The explanation was not clear on the coordinates.
It fixed the pb, thx


#5

_CG_Thibaud thanks for the answer, helped me too. But I think such a “huge” mistake (mixing up x and y) should be detected by the validators sooner, isn’t it possible to add one test to show the mistake ?


#6

I guess we could add 1 or 2 test(s) where W != H

I’m not familiar with the puzzle though. Anyone wants to suggest a new test case (test + validator)?