1033: 五级制成绩
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner cin=new Scanner(System.in);int score=cin.nextInt();if (score>=90)System.out.println("A");else if (score>=80)System.out.println("B");else if (score>=70)System.out.println("C");else if (score>=60)System.out.println("D");else System.out.println("E");}
}