Compilare: main.cpp: In function 'void getSortingOrder(const string&, int)': main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i = 0; i < s.size(); ++i) { | ~~^~~~~~~~~~ main.cpp:23:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (int i = 0; i < s.size() - (1 << pow) + 1; ++i) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::size_t std::hash<HashingKey>::operator()(const HashingKey&) const': main.cpp:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int i = 0; i < k.sortingOrders.size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<int> getInvsortedLogBits(int)': main.cpp:85:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for (int i = 0; i < sol.size() / 2; ++i) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int countMaxRepsForLength(int)': main.cpp:105:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 105 | for (int i = 0; i < s.size() - length + 1; ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:118:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 118 | for (int pow = 0; (1 << pow) <= s.size(); ++pow) getSortingOrder(s, pow); | ~~~~~~~~~~~^~~~~~~~~~~