/in/foo.cc: In function 'int main()':
/in/foo.cc:6:2: error: 'cin' was not declared in this scope
  cin>>m;
  ^~~
/in/foo.cc:17:6: error: 'cout' was not declared in this scope
      cout<<"Yes";
      ^~~~
/in/foo.cc:21:6: error: 'cout' was not declared in this scope
      cout<<"No" ;
      ^~~~