package com.javarush.task.task05.task0507; /* Среднее арифметическое */ import java.io.BufferedReader; import java.io.InputStreamReader; public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); int count = 0; int result = 0; int a = 0; while (a != -1){ a = Integer.parseInt(reader.readLine()); result = result + a; count++; //напишите тут ваш код } double f = (result - 1) / (count -1); System.out.println(f); } }