Compilare: main.cpp: In function 'int main()': main.cpp:27:51: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while (s[cnt] == best[cnt] && cnt < s.size()) | ~~~~^~~~~~~~~~ main.cpp:31:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | if (cnt < s.size() && s[cnt] < best[cnt]) | ~~~~^~~~~~~~~~ main.cpp:51:35: warning: comparison of constant '-1' with boolean expression is always false [-Wbool-compare] 51 | if (ok[i] == -1) continue; | ~~~~~~^~~~~ main.cpp:53:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for (int k = 0; k < a[j].size(); k++) { | ~~^~~~~~~~~~~~~ main.cpp:55:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | if (cnt == a[i].size()) { | ~~~~^~~~~~~~~~~~~~ main.cpp:62:35: warning: comparison of constant '-1' with boolean expression is always false [-Wbool-compare] 62 | if (ok[j] == -1) continue; | ~~~~~~^~~~~ main.cpp:64:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for (int k = 0; k < a[i].size(); k++) { | ~~^~~~~~~~~~~~~ main.cpp:66:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | if (cnt == a[j].size()) { | ~~~~^~~~~~~~~~~~~~