import java.io.*;
import java.util.stream.Stream;

public class TheBirthdayBar {

    public static void main(String[] args) {
        try (var br = new BufferedReader(new InputStreamReader(System.in));
             var bw = new BufferedWriter(new OutputStreamWriter(System.out))) {

            int n = Integer.parseInt(br.readLine());
            int[] squares = Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
            String[] line = br.readLine().split(" ");
            int day = Integer.parseInt(line[0]);
            int month = Integer.parseInt(line[1]);

            int result = countWays(squares, day, month);

            bw.write(String.valueOf(result));
            bw.flush();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    private static int countWays(int[] squares, int targetSum, int segmentLength) {
        if (squares.length < segmentLength) {
            return 0;
        }
        int currentSum = 0;
        for (int i = 0; i < segmentLength; i++) {
            currentSum += squares[i];
        }
        int validWays = (currentSum == targetSum) ? 1 : 0;
        for (int i = segmentLength; i < squares.length; i++) {
            currentSum = currentSum - squares[i - segmentLength] + squares[i];
            if (currentSum == targetSum) {
                validWays++;
            }
        }
        return validWays;
    }
}