Compilare: main.cpp: In function 'bool gasit(std::__cxx11::string, std::__cxx11::string)': main.cpp:17:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a.size();i++) ~^~~~~~~~~ main.cpp:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<b.size();i++) ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size();i++) ~^~~~~~~~~ main.cpp:60:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v.size();j++) ~^~~~~~~~~ main.cpp:72:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol2.size();i++) ~^~~~~~~~~~~~