import  java.util.Scanner;
class Score
{
public static void main(String[] args)
{
Scanner sc =new Scanner(System.in);
int score = sc.nextInt();
System.out.printnl("请输入")
String level;
if (score >=90 && score <= 100)
{
level= "A等级"
}
后面就省略了

}

}

import  java.util.Scanner;
class Score
{
public static void main(String[] args)
{
Scanner sc =new Scanner(System.in);
int score = sc.nextInt();
System.out.printnl("请输入")
String level;
if (score >=90 && score <= 100)
{
level= "A等级"
}
后面就省略了

}

}