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

#include <iostream>
#include <vector>

using namespace std;

int main()
{
    int n, k, l, f; cin >> n >> k >> l >> f;
    vector<int>ho(n + 1);

    int db = 0, high = 0, low = 0;
    bool riado = false;
    for (int i = 1; i <= n; ++i) {
        cin >> ho[i];
        if (ho[i] > f) {
            ++high;
            low = 0;
        }
        else if (ho[i] < f) {
            ++low;
            high = 0;
        }
        else {
            high = 0; low = 0;
        }

        if (high >= k && riado!=true) {
            ++db;
            riado = true;
        }
        else if (low >= l && riado==true) riado = false;
    }

    cout << db << endl;
}