Compilare: user.cpp: In function ‘int main()’: user.cpp:76:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<ciup.size(); i++){ ^ user.cpp:81:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1; j<ciup.size(); j++){ ^ user.cpp:72:24: warning: unused variable ‘aa’ [-Wunused-variable] long long int sol, aa, bvb, cc; ^ user.cpp:72:28: warning: unused variable ‘bvb’ [-Wunused-variable] long long int sol, aa, bvb, cc; ^ user.cpp:72:33: warning: unused variable ‘cc’ [-Wunused-variable] long long int sol, aa, bvb, cc; ^