import java.util.Scanner;
public class Chengjichaxun 
{
   public static void main(String args[])
   {
       System.out.print("请输入您的成绩:");
       Scanner a= new Scanner(System.in);    //创建Scanner对象，
       int b = a.nextInt();                    //获取输入的数字
       
       int chengji = b/10;                    //成绩除以10的目的是为了让程序按每10分一个等级来判断学生的成绩
       switch(chengji)
       {
       case 10:
           System.out.println("满分");
           break;
           case 9:
           System.out.println("优秀");
           break;
           case 8:
           System.out.println("良好");
           break;
           case 7:
           System.out.println("一般");
           break;
           case 6:
           System.out.println("及格");
           break;
           case 5:
           System.out.println("不及格");
           break;
           case 4:
           System.out.println("不及格");
           break;
           case 3:
           System.out.println("不及格");
           break;
           case 2:
           System.out.println("不及格");
           break;
           case 1:
           System.out.println("不及格");
           break;
           case 0:
           System.out.println("不及格");
           break;
           default:
           System.out.println("成绩输入错误...");
           break;
           
       }
       }
    }