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#include "geo/triangle_area.hpp"
template <typename REAL, typename T> REAL triangle_area(Point<T> A, Point<T> B, Point<T> C) { return abs((B - A).det(C - A)) * 0.5; }
#line 1 "geo/triangle_area.hpp" template <typename REAL, typename T> REAL triangle_area(Point<T> A, Point<T> B, Point<T> C) { return abs((B - A).det(C - A)) * 0.5; }