题解 | #统计成绩#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int num = in.nextInt();       
       double max = in.nextDouble();
       double min = max;
       double avg = 0;
       double sum = max;
        while(in.hasNext()){
            double temp = in.nextDouble();
            max = max>=temp?max:temp;
            min = min<temp?min:temp;
             sum = sum+temp;
        }

        System.out.printf("%.2f %.2f %.2f",max,min,((sum)/num));
    }
}