Compilare: main.cpp: In function 'void parse()': main.cpp:14:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(i=0;i<s.size();++i) | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:37:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(i=1;i<=v.size();++i) | ~^~~~~~~~~~ main.cpp:34:11: warning: unused variable 'j' [-Wunused-variable] 34 | int i,j,maxim=-1,q=1; | ^ main.cpp:34:22: warning: unused variable 'q' [-Wunused-variable] 34 | int i,j,maxim=-1,q=1; | ^ main.cpp:35:20: warning: unused variable 'lit' [-Wunused-variable] 35 | char plit,ulit,lit='a'-1; | ^~~