#include <iostream>

using namespace std;

int main()
{
    int n, k,l,f;
    cin >> n >>k >> l >> f;
    int a[n];
    for(int i = 0; i < n; i++)
        cin >> a[i];
    bool riado = false;
    int rsz = 0;
    int felett = 0;
    int alatt = 0;
    for(int i = 0; i < n; i++)
    {
        if(!riado)
        {
            if(a[i]>f)
                felett++;
            else
                felett=0;
            if(felett==k)
            {
                riado = true;
                felett = 0;
                rsz++;
                //cout << a[i] << endl;
            }
        }
        else
        {
            if(a[i]<f)
                alatt++;
            else
                alatt = 0;
            if(alatt=l)
            {
                riado = false;
                alatt = 0;
            }
        }
    }
    cout << rsz;
    return 0;
}