Compilare: main.cpp: In function 'bool bfs()': main.cpp:34:1: warning: no return statement in function returning non-void [-Wreturn-type] 34 | } | ^ main.cpp: In function 'int main()': main.cpp:43:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (int j = 1; j <= s.size(); j++) { | ~~^~~~~~~~~~~