Eroare de compilare: user.cpp: In member function ‘bool lessP::operator()(const std::pair<double, double>&, const std::pair<double, double>&)’: user.cpp:11:104: error: expected ‘)’ before ‘;’ token return l.first <= r.first - eps || ( abs(l.first - r.first) < eps && l.second <= r.second - eps; ^ user.cpp: In function ‘int main()’: user.cpp:43:16: warning: unused variable ‘lv2’ [-Wunused-variable] double lv2, lv3; ^ user.cpp:43:21: warning: unused variable ‘lv3’ [-Wunused-variable] double lv2, lv3; ^