Compilare: main.cpp: In function 'std::vector<int> make_pattern(std::__cxx11::string)': main.cpp:14:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i != a.size()) { ~~^~~~~~~~~~~ main.cpp: In function 'void solve(std::__cxx11::string, std::__cxx11::string)': main.cpp:44:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(;it!=text.size();it++) ~~^~~~~~~~~~~~~ main.cpp:46:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ip==mask.size()) ~~^~~~~~~~~~~~~