运行 ID: 317938

Main.cc:14:2: error: ‘cout’ does not name a type
  cout<<"different";
  ^~~~
Main.cc:15:2: error: expected unqualified-id before ‘return’
  return 0;
  ^~~~~~
Main.cc:16:3: error: expected unqualified-id before ‘if’
   if(a[i]==a[j]){
   ^~