#include <iostream>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, k, l, f;
    cin >> n >> k >> l >> f;
    int fok,sz=0,m=0;
    bool hoseg = 0;
    for (int i = 0;i < n;++i)
    {
        cin >> fok;
        if (fok > f)
        {
            if (hoseg)
            {
                sz = 0;
            }
            else
            {
                ++sz;
                if (sz == k)
                {
                    hoseg = 1;
                    sz = 0;
                    ++m;
                }
            }
        }
        else if (fok < f)
        {
            if (hoseg)
            {
                ++sz;
                if (sz == l)
                {
                    hoseg = 0;
                    sz = 0;
                }
            }
            else
            {
                sz = 0;
            }
        }
        else sz = 0;
    }
    cout << m;
}