#include <iostream>

using namespace std;

int main()
{
	int n, k, l, f;
	cin >> n >> k >> l >> f;

	int x, ans = 0;
	bool inLock = false;
	int consOver = 0;
	int consUnder = 0;
	for (int i = 0; i < n; i++)
	{
		cin >> x;

		bool over = x > f;
		bool under = x < f;

		if (over)
		{
			consOver++;
		}
		else
		{
			consOver = 0;
		}
		if (under)
		{
			consUnder++;
		}
		else
		{
			consUnder = 0;
		}

		if (!inLock)
		{
			if (consOver >= k)
			{
				inLock = true;
				ans++;
			}
		}
		else
		{
			if (consUnder >= l)
			{
				inLock = false;
			}
		}
	}
	cout << ans << endl;
}