using System;
 public class student
 {
	 protected string name;
	 protected int age;
	 protected decimal score;
	 public student(string name,int age,decimal score)
	 {
		 this.name=name;
		 this.age=age;
		 this.score=score;
	 }
	 public virtual string Name
	 {
		 get
		 {
			return name;
		 }
		 set
		 {
			name=value;
		 }
	 }
	 public virtual int Age
	 {
		 get
		 {
			 return age;
		 }
		 set
		 {
			age=value;
		 }
	 }
	 public virtual decimal Socore
	 {
		 get
		 {
			return score;
		 }
		 set
		 {
			score=value;
		 }
	 }
 }
 public class good_student:student
 {
	 public decimal bursary=0.0m;
	 public  good_student(string g_name,int g_age,decimal g_score,decimal g_bursary):base(g_name,g_age,g_score)
	 {
		  this.bursary =bursary;
	 }
	 public override string Name
	 {
		 get
		 {
			 return name;
		 }
		 set
		 {
			 name = value;
		 }
	 }
	 public override int Age
	 {
		 get
		 {
			 return age;
		 }
		 set
		 {
			 age = value;
		 }
	 }
	 public override decimal Socore
	 {
		 get
		 {
			 if(score>80.0m)
			 {
				bursary+=1200.0m;
			 }
			 else
			 {
				bursary=0.0m;
			 }
			return score;
		 }
		 set
		 {
			 score = value;
		 }
	 }
 }
 public class MainClass
 {
	 public static void Main()
	 {
		 student s=new student ("大明",23,32.0m);
		 Console.WriteLine ("\t{0},\t{1},\t{2}",s.Name ,s.Age ,s.Socore );
		 good_student gs=new good_student ("小明",32,89.0m,0);
		 Console.WriteLine ("\t{0},\t{1},\t{2},\t{3}",gs.Name,gs.Age ,gs.Socore,gs.bursary );
	 }

 }