Compilare: main.cpp: In function 'bool inclus(std::__cxx11::string, std::__cxx11::string)': main.cpp:20:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<B.size();i++) ~^~~~~~~~~ main.cpp: In function 'void p1()': main.cpp:57:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lmax<c[i].size()) ~~~~^~~~~~~~~~~~ main.cpp: In function 'void p2()': main.cpp:103:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();i++) ~^~~~~~~~~ main.cpp:74:9: warning: unused variable 's' [-Wunused-variable] int s=0; ^