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aszaloki     2025-07-31 10:57:07

Hi Kevin,

although the problem description is unambiguous, the image is not displayed (maybe some typo in the image URL).

Thank you for the new problem :)

aszaloki     2025-08-08 13:20:34

Hi Kevin,

I have another problem. In the second case of the example puts point G in the plane-part which is defined by the larger angle of the intersecting lines.

https://www.desmos.com/geometry/t517uljbkq

The two circles given in the answer pass through point G but neither of them are tangent to the lines. Is it because of the arbitrary order of the center point coordinates listed in the answer or did you construct the case with this intent (to check where point G is located? according to the given lines) :)

I assumed that G is located in the narrower quarter-plane defined by the lines. No problem if it so, then I just also need to take this possibility into account.

admin (Kevin)     2025-08-11 15:37:58
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Hi Adam!

Thanks for the heads-up! In the case when the point G is located in the external angle defined by the points, it looks like the checker was correctly configured to give the correct answer. However, you are also correct that the example given for that testcase was completely incorrect! I've since updated the example with the correct answer.

Thank you!

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