// hosegriado.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <vector>
#include <fstream>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    int n, k, l, f; cin >> n >> k >> l >> f;
    vector<int>ho(n);

    for (int i = 0; i < n; ++i) {
        cin >> ho[i];
    }

    int db = 0, high = 0, low = 0;
    bool riado = false;
    for (int i = 0; i < n; ++i) {
        if (ho[i] > f) {
            ++high;
            if (high > k && !riado) {
                ++db;
                riado = true;
            }
        }
        else if (ho[i] < f) {
            ++low;
            if (low > l && riado) riado = false;
        }
        else if (ho[i] == f) {
            high = 0; low = 0;
        }
    }

    cout << db << endl;
}