Compilare: main.cpp: In function 'bool verificare(std::__cxx11::string, std::__cxx11::string)': main.cpp:13:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<b.size() and i<a.size()) ~^~~~~~~~~ main.cpp:13:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<b.size() and i<a.size()) ~^~~~~~~~~ main.cpp:19:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==a.size()) ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:35:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s[i].size()>lmax) ~~~~~~~~~~~^~~~~ main.cpp:40:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(s[i].size()==lmax and s[i]<sol) ~~~~~~~~~~~^~~~~~