Let A1,A2,...,A2002 be arbitrary points in the plane. Prove that for every circle of radius 1 and for every rectangle inscribed in this circle, there exist 3 vertices M,N,P of the rectangle such that
MA1+MA2+⋯+MA2002+ NA1+NA2+⋯+NA2002+ PA1+PA2+⋯+PA2002≥6006. inequalitiesgeometryrectanglegeometry proposed