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jesshuifeng

why the inside and outside tasks are hard in this case?

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weitingt

dunkin' donut

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acaosun

We only have an explicit equation for points on the surface, but nothing informing us whether a point is inside or outside.

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jyu

Is it because of the properties of trigonometric functions that f(inf, inf) might have similar values with points inside the torus so we can't distinguish only by values?