#include <iostream>
#include <vector>
using namespace std;

int main()
{
    int n,k, l, f,x;
    cin >> n >> k >> l >> f;
    bool van = false;
    int db1 = 0, db2 = 0, db = 0;
    for (int i = 0; i < n; i++)
    {
        cin >> x;
        if (x > f)
        {
           db1++;
           db2 = 0;
           if (db1 >= k && !van)
           {
               van = true;
               db++;
           }
        }
        else
        {
            if (x < f)
            {
                db2++;
                db1 = 0;
                if(db2 >= l && van)
                {
                    van = false;
                }
            }
        }
    }
    cout << db;
    return 0;
}