import java.util.ArrayList;
class T{
	public static void main(String[] args){
		ArrayList<String> list=new ArrayList<>();
		list.add("是你");
		list.add("调低");        
		list.remove(1);
		System.out.println(list);
		System.out.println(list.get(0));
		System.out.println(list.size());
	}
}