#include <iostream>
#include <vector>

using namespace std;

int main()
{
	int n, k, l, f, i, out = 0;
	cin >> n >> k >> l >> f;

	vector<short> days(n);

	for (i = 0; i < n; i++)
	{
		cin >> days[i];
	}

	int abovefor = 0, belowfor = 0, isalarm = false;

	for (i = 0; i < n; i++)
	{
		if (days[i] > f)
		{
			belowfor = 0;
			abovefor++;

			if (abovefor == k && !isalarm)
			{
				out++;
				isalarm = true;
			}
		}
		else
		{
			if (days[i] < f)
			{
				abovefor = 0;
				belowfor++;

				if (belowfor == l)
				{
					isalarm = false;
				}
			}
			else //egyenlõk
			{
				belowfor = 0;
				abovefor = 0;
			}
		}
	}

	cout << out;
}