#include <vector>
#include <iostream>
using namespace std;
int main()
{
    int n, k, l, f;
    cin >> n >> k >> l >> f;
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    int ksz=0, lsz=0,vsz=0;
    bool hr = false;
    for (int i = 0; i < n; i++) {
        if (a[i] > f) {
            lsz = 0;
            ksz++;
        }
        else if (a[i] < f) {
            ksz = 0;
            lsz++;
        }
        else{
            if (hr) lsz = 0;
            else ksz = 0;
        }

        if (ksz == k && !hr) {
            hr = true;
            lsz = 0;
            vsz++;
        }
        if (lsz == l) hr = false;
    }
    cout << vsz << endl;
}