Main.cc:3:7: error: expected nested-name-specifier before 'namespcae'
    3 | using namespcae std;
      |       ^~~~~~~~~
Main.cc: In function 'int main()':
Main.cc:14:4: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   14 |    cout << result << endl;
      |    ^~~~
      |    std::cout
In file included from Main.cc:1:
/usr/include/c++/12.2.1/iostream:61:18: note: 'std::cout' declared here
   61 |   extern ostream cout;          /// Linked to standard output
      |                  ^~~~
Main.cc:14:22: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   14 |    cout << result << endl;
      |                      ^~~~
      |                      std::endl
In file included from /usr/include/c++/12.2.1/iostream:39:
/usr/include/c++/12.2.1/ostream:688:5: note: 'std::endl' declared here
  688 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~