package com.javarush.task.task05.task0507;
/*
Среднее арифметическое
*/
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.text.DecimalFormat;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
DecimalFormat df = new DecimalFormat("#0.0");
double s = 0;
int n = 0;
while (true) {
int x = Integer.parseInt(reader.readLine());
if (x == -1)
break;
n++;
s += x;
}
double sa = s / (n);
System.out.println(df.format(sa));
package com.javarush.task.task05.task0507;
/*
Среднее арифметическое
*/
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.text.DecimalFormat;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
DecimalFormat df = new DecimalFormat("#0.0");
double s = 0;
int n = 0;
while (true) {
int x = Integer.parseInt(reader.readLine());
if (x == -1)
break;
n++;
s += x;
}
double sa = s / (n);
System.out.println(df.format(sa));
//напишите тут ваш код
}
}