Compilare: main.cpp: In function 'int main()': main.cpp:20:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i = par+1;i<s.size()-1;i++){ | ~^~~~~~~~~~~ main.cpp:15:13: warning: unused variable 'numar' [-Wunused-variable] 15 | int numar = 0; | ^~~~~ main.cpp:9:10: warning: unused variable 'turn' [-Wunused-variable] 9 | bool turn = 0; | ^~~~