Compilare: main.cpp: In function 'int main()': main.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(int i=0;i<A.size();i--) | ~^~~~~~~~~ main.cpp:20:25: 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=A.size();i<B.size();i++) | ~^~~~~~~~~ main.cpp:29:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i=0;i<1000 && i<poz.size();i++) | ~^~~~~~~~~~~