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package com.javarush.task.pro.task04.task0403;
import java.util.Scanner;
/*
Суммирование
*/
public class Solution {
public static void main(String[] args) {
//напишите тут ваш код
Scanner scanner = new Scanner(System.in);
int A = scanner.nextInt();
int B = scanner.nextInt();
int C = scanner.nextInt();
int D = scanner.nextInt();
int F = A + B + C + D;
boolean isENTER = false;
while (!isENTER)
{
String str = scanner.nextLine();
isENTER = str.equals("ENTER");
System.out.println(F);
}
}
}