Compilare: main.cpp: In function 'bool check(int, int)': main.cpp:17:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for (int j = len; j < words[i].size(); ++j) { | ~~^~~~~~~~~~~~~~~~~ main.cpp:8:10: warning: unused variable 'ok' [-Wunused-variable] 8 | bool ok = false; | ^~