蓝桥杯---成绩分析【第十一届】【省赛】【研究生组】

import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n=sc.nextInt();
        int [] a=new int[n];
        int sum=0;

        for(int i=0;i<n;i++){
            a[i]=sc.nextInt();

        }
       Arrays.sort(a);

            System.out.println(a[n-1]);
            System.out.println(a[0]);
            for(int i=0;i<n;i++){
                sum+=a[i];
            }
        System.out.printf("%.2f",(double)sum/n);

        }

    }