题解 | #完美成绩#

import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        while(scan.hasNextInt()) {
            Integer score = scan.nextInt();
            if(score >= 90 && score <= 100) {
                System.out.println("Perfect");
            }
        }
    }
}