Compilare: main.cpp: In function 'int main()': main.cpp:23:27: 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 x = 0 ; x < s.size() ; x++) | ~~^~~~~~~~~~ main.cpp:27:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(int x = 0 ; x < s.size() ; x++) | ~~^~~~~~~~~~ main.cpp:60:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(int x = 0 ; x < s.size() ; x++) | ~~^~~~~~~~~~ main.cpp:56:55: warning: unused variable 'c' [-Wunused-variable] 56 | int semn = 1, cx = 0, cy = 0, cz = 0, ct = 0, c = 0, ans = 0; | ^