help pls
package com.codegym.task.task05.task0507;
/*
Arithmetic mean
*/
import java.util.Arrays;
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader key = new BufferedReader(new InputStreamReader(System.in));
int[] a = {Integer.parseInt(key.readLine()),
Integer.parseInt(key.readLine()),
Integer.parseInt(key.readLine()),
Integer.parseInt(key.readLine()),
Integer.parseInt(key.readLine())};
double count=0.0;
for(int i=0;i<a.length;i++){
if(a[i]==-1){
break;
}
count =count + a[i];
}
double mean;
mean = count/a.length;
System.out.print(mean);
}
}