Compilare: user.cpp: In function ‘int main()’: user.cpp:148:7: warning: variable ‘less_poz’ set but not used [-Wunused-but-set-variable] auto less_poz = [](const int a, const int b){ ^ user.cpp:150:7: warning: variable ‘greater_poz’ set but not used [-Wunused-but-set-variable] auto greater_poz = [](const int a, const int b){ ^