package com.codegym.task.task05.task0507;
/*
Arithmetic mean
*/
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 sumNum = 0;
int count = 0;
double meanNum = (double)sumNum /(double)count;
while(true){
int number = Integer.parseInt(reader.readLine());
if(number == -1){
break;
} else {
sumNum += (number + 0.0);
count++;
}
}
System.out.println(meanNum);
}
}
package com.codegym.task.task05.task0507;
/*
Arithmetic mean
*/
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 sumNum = 0;
int count = 0;
double meanNum = (double)sumNum /(double)count;
while(true){
int number = Integer.parseInt(reader.readLine());
if(number == -1){
break;
} else {
sumNum += (number + 0.0);
count++;
}
}
System.out.println(meanNum);
}
}