Eroare de compilare: main.cpp:2:17: error: 'std\U00000219' is not a namespace-name 2 | using namespace stdș | ^~~~ main.cpp:2:22: error: expected ';' before 'int' 2 | using namespace stdș | ^ | ; 3 | int main(){ | ~~~ main.cpp: In function 'int main()': main.cpp:5:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'? 5 | cin>>a>>b; | ^~~ | std::cin In file included from main.cpp:1: /usr/include/c++/10/iostream:60:18: note: 'std::cin' declared here 60 | extern istream cin; /// Linked to standard input | ^~~ main.cpp:6:1: error: 'cout' was not declared in this scope; did you mean 'std::cout'? 6 | cout<<a+b; | ^~~~ | std::cout In file included from main.cpp:1: /usr/include/c++/10/iostream:61:18: note: 'std::cout' declared here 61 | extern ostream cout; /// Linked to standard output | ^~~~ Non zero exit status: 1