import java.util.LinkedList;
class Term{
	String name;
	int score;
	Term(String name, int score){
		this.name=name;
		this.score=score;
	}
	public String toString(){
		return name+":"+score;
	}
}	
public class Main {
	public static void main(String[] args) {
		LinkedList<Term> f=new LinkedList<Term>();
		f.push(new Term("小王", 689));
		System.out.println(f);
		f.push(new Term("老三",15));
		System.out.println(f);
		f.push(new Term("Bill",20));
		System.out.println(f);
		f.pop();
		System.out.println(f);
	}
}