Compilare: main.cpp: In function 'void verificare(int)': main.cpp:32:48: warning: array subscript has type 'char' [-Wchar-subscripts] 32 | if(used[i]==0 && ( i!=0 || lit[c[dg-'a']]!=2 ) ) | ~~~~~~~~^ main.cpp: In function 'int main()': main.cpp:50:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int j=1; j<s[i].size(); j++) | ~^~~~~~~~~~~~