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same here ...
I submitted the graham scan firstly then I had problem with the 4th test ... so I tried the QuickHull and indeed it doesn't return the points in order so you will calculate a false perimeter , unless you do smth. more :)
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Convex Hull
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same here ... I submitted the graham scan firstly then I had problem with the 4th test ... so I tried the QuickHull and indeed it doesn't return the points in order so you will calculate a false perimeter , unless you do smth. more :)