Compilare: main.cpp: In function 'int main()': main.cpp:14:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i = 0; i < s.size(); i++){ | ~~^~~~~~~~~~ main.cpp:25:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if(k == s.size() - 1){ | ~~^~~~~~~~~~~~~~~ main.cpp:19:21: warning: unused variable 'dr' [-Wunused-variable] 19 | int k, cnt, st, dr, mij; | ^~ main.cpp:19:25: warning: unused variable 'mij' [-Wunused-variable] 19 | int k, cnt, st, dr, mij; | ^~~