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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
because coordinates are ascending from top to bottom and left to right; as is usual in programming.
therefore for
A (x1 y1)to be higher thanB (x2 y2), its row must be smaller than that ofB:y1 < y2.This comment is hidden because it contains spoiler information about the solution
It means that the translation is wrong. Which language?
Based on 300+ C# completion I doubt that it's the kata's "mistake". Better check your code :-)
Without any other context or information, it's impossible to know for sure.
This comment is hidden because it contains spoiler information about the solution