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    Ok! Thanks!

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    Read the problem more thoroughly! Note that the diameters of each circle were given, and you calculated radii.

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    I'm using Haskell, there are two issues here:

    1. in the preloaded type, it should be SingleBullDS instead of BullDS, it confused me a while until I read the simple test code.
    2. I can't understand why (-133.69, -147.38) is MissDS, as I understand, the largest range is 340 and sqrt(134^2+147^2)= 199.