#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n, K, L, F;
    int mostsok=0, mostkeves=0, szamlalo=0;
    bool hosegriado=(mostsok>=K or mostkeves>=L);
    cin >> n >> K >> L >> F;
    int t[n];
    for(int i=0;i<n;i++)
    {
        cin >> t[i];
        if(t[i]>F and hosegriado==false)
        {
            mostsok++;
            mostkeves==0;
        }
        if(mostsok==K) szamlalo++;
        if(t[i]<F and hosegriado==true)
        {
            mostkeves++;
        }
        if(mostkeves==L) mostsok=0;


    }
    cout << szamlalo;
    return 0;
}