//

#include <iostream>
using namespace std;
int main()
{
    int n, k, l, f, streak = 0, napok=0,a,riadoe=0;
    cin >> n >> k >> l >> f;
    for (int i = 1; i <= n; i++) {
        cin >> a;
        if (a > f and riadoe == 0) {
            streak++;
            if (streak==k) {
                riadoe = 1;
                napok++;
                streak = 0;
            }
        }
        else if (a < f and riadoe == 1) {
            streak++;
            if (streak == l) {
                riadoe = 0;
                streak = 0;
            }
        }
        else 
            streak = 0;
    }
    cout << napok;
}