Run id: 135241

Main.cc: In function 'int main()':
Main.cc:4:2: error: 'cin' was not declared in this scope
  cin>>a; 
  ^
Main.cc:6:3: error: 'cout' was not declared in this scope
   cout<<"YES";
   ^
Main.cc:9:3: error: 'cout' was not declared in this scope
   cout<<"NO";
   ^