package com.company;

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class BombNumbers {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        List<Integer> numbers = Arrays.stream(scanner.nextLine().split(" ")).map(Integer::parseInt).collect(Collectors.toList());
        int[] bombNumberAndPower = Arrays.stream(scanner.nextLine().split(" ")).mapToInt(Integer::parseInt).toArray();
        int bombNumber = bombNumberAndPower[0];
        int power = bombNumberAndPower[1];
        while (numbers.contains(bombNumber)) {
            int start = numbers.indexOf(bombNumber) - power;
            int end = numbers.indexOf(bombNumber) + power;
            if (start < 0) {
                start = 0;
            }
            if (end > numbers.size() - 1) {
                end = numbers.size() - 1;
            }
            for (int i = start; i <= end; i++) {
                numbers.remove(start);
            }
        }
        int sum = 0;
        for (int i = 0; i < numbers.size(); i++) {
            sum += numbers.get(i);
        }
        System.out.println(sum);
    }
}