baekjoon 2108

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Arrays;

class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        int T = Integer.parseInt(br.readLine());
        int sum = 0;
        int min = Integer.MAX_VALUE;//Integer.MAX_VALUE = 2147483647
        int max = Integer.MIN_VALUE;//Integer.MIN_VALUE = -2147483648
        int[] arr = new int[8001];
        int[] arrT = new int[T];
        for (int t = 0; t < T; t++){
            int n = Integer.parseInt(br.readLine());
            arr[n+4000]++;
            arrT[t] = n;
            sum += n;
            if (n > max)
                max = n;
            if (n < min)
                min = n;
        }
        sb.append(getMean(sum, T)).append('\n');//산술평균
        sb.append(getMedian(arrT, T)).append('\n');//중앙값
        sb.append(getMode(arr, max, min)).append('\n');//최빈값
        sb.append(getRange(max, min)).append('\n');//범위
        System.out.println(sb);
        br.close();
    }

    static int getMean(int sum, int T){
        return (int)Math.round((double)sum/T);
    }
    static int getMedian(int[] arr, int T){
        Arrays.sort(arr);
        return arr[T/2];
    }
    static int getMode(int[] arr, int max, int min){
        Boolean flag = null;
        int mode = 0, modeMax = 0;
        for(int a = min + 4000; a <= max + 4000; a++){
            if (arr[a] > mode){
                mode = arr[a];
                modeMax = a - 4000;
                flag = true;
            } else if (arr[a] == mode && flag) {
                modeMax = a - 4000;
                flag = false;
            }
        }
        return  modeMax;
    }
    static int getRange(int max, int min){
        return max - min;
    }
}