I don't understand why it is not working...
package fr.codegym.task.task04.task0442;
/*
Ajout
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
while (true){
InputStream inputStream = System.in;
Reader inputStreamReader = new InputStreamReader(inputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String a1 = bufferedReader.readLine();
int a = Integer.parseInt(a1);
String b1 = bufferedReader.readLine();
int b = Integer.parseInt(b1);
String c1 = bufferedReader.readLine();
int c = Integer.parseInt(c1);
String d1 = bufferedReader.readLine();
int d = Integer.parseInt(d1);
String n1 = bufferedReader.readLine();
int n = Integer.parseInt(n1);
if (n == -1){
System.out.println(a+b+c+d+n);
break;
}
}
}
}