Compilare: main.cpp: In function 'int main()': main.cpp:74:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(int j=0;j<s.size();j++){ | ~^~~~~~~~~ main.cpp:105:30: warning: 'ym' may be used uninitialized in this function [-Wmaybe-uninitialized] 105 | out<<minn<<' '<<xm<<' '<<ym; | ^~ main.cpp:105:25: warning: 'xm' may be used uninitialized in this function [-Wmaybe-uninitialized] 105 | out<<minn<<' '<<xm<<' '<<ym; | ^~~