import java.util.*;

public class ifs {

public static void main(String args[]){

Scanner in=new Scanner(System.in);

System.out.println("请输入成绩");

int A=in.nextInt();

if(A>=90){

System.out.println("优秀");

}

else if(A>80){

System.out.println("良好");

}

else if(A>=60){

System.out.println("及格了");

}

else if(A<60){

System.out.println("不及格");

}

System.out.println("结果");

}

}