package exp1;

import java.util.Scanner;

public class Score {
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        System.out.print("请输入百分制成绩： ");
        int score = scan.nextInt();
        scan.close();

        if(score>100 || score<0){
            System.out.println("输入错误");
        }else if(score>=90 && score<=100){
            System.out.println("优秀");
        }else if(score>=80 && score<90){
            System.out.println("良好");
        }else if(score>=70 && score<80){
            System.out.println("中等");
        }else if(score>=60 && score<70){
            System.out.println("及格");
        }else{
            System.out.println("不及格");
        }
    }
    
}