#include <bits/stdc++.h>

using namespace std;

int main()
{
    //ifstream cin("f.txt");
    int n, l, k, f, m, cn=0, cl=0,all=0;
    bool h = 0;
    cin >> n>> k >> l >> f;
    for(int i=1; i<=n; i++)
    {
        cin >> m;
        if(m<=f)
        {
            cl++;
            if(cl==l && h)
            {
                cl = 0;
                h=0;
                cn = 0;

            }
        }
        if(m >f)
        {
            cl = 0;
            cn++;
            if(cn == k && !h)
            {
                h = 1;
                all++;
            }
        }

    }
    cout << all;

    return 0;
}