Compilare: main.cpp: In member function 'long long int Func::compute(std::vector<long long int>&)': main.cpp:127:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0;i < params.size();++i) { ~~^~~~~~~~~~~~~~~ main.cpp:132:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0;i < vec.size();++i) { ~~^~~~~~~~~~~~ main.cpp:135:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0;i < vec.size();++i) { ~~^~~~~~~~~~~~ main.cpp: In function 'long long int compute()': main.cpp:200:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0;i < vec.size();++i) ~~^~~~~~~~~~~~ main.cpp:202:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0;i < vec.size();++i) { ~~^~~~~~~~~~~~ main.cpp: In member function 'long long int Func::getRes(long long int, long long int, char)': main.cpp:75:5: warning: control reaches end of non-void function [-Wreturn-type] } ^