Compilare: main.cpp: In constructor 'ConvexHull::ConvexHull(std::vector<std::pair<long double, long double> >&)': main.cpp:29:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<points.size(); ++i) ~^~~~~~~~~~~~~~ main.cpp:39:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=2; i<points.size(); ++i) { ~^~~~~~~~~~~~~~ main.cpp: In constructor 'DynamicConvexHull::DynamicConvexHull(std::vector<std::pair<long double, long double> >&)': main.cpp:62:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<hullPoints.size(); ++i) ~^~~~~~~~~~~~~~~~~~ main.cpp:66:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0, x, y; i<hullPoints.size(); ++i) ~^~~~~~~~~~~~~~~~~~