#include <iostream>
#include <vector>

using namespace std;

int main()
{
    int n, k, l, f;
    cin >> n >> k >> l >> f;
    int folotte = 0, alatta = 0, x;
    int hosegriado = 0;
    for(int i = 0; i < n; i ++){
        cin >> x;
        if(x >= f)
            folotte ++;
        else if(x < f){
            alatta ++;
        }
        if(alatta == l){
            folotte = 0;
            alatta = 0;
        }
        if(folotte == k){
            hosegriado ++;
        }
    }
    cout << hosegriado;
    return 0;
}