Compilare: user.cpp: In function ‘int main()’: user.cpp:37:10: warning: unused variable ‘j’ [-Wunused-variable] ll i,j,aux; ^ user.cpp:37:12: warning: unused variable ‘aux’ [-Wunused-variable] ll i,j,aux; ^~~ user.cpp:38:8: warning: unused variable ‘sol’ [-Wunused-variable] ll sol,phi=getphi()-1; ^~~