#include <bits/stdc++.h>
using namespace std;

int main() {
	int n,l,k,f;
	cin >> n >> k >> l >> f;
	int kc=0,lc=0;
	int ksum=0,lsum=0;
	int a;
	bool b = 0;
	for (int i = 0; i < n; i++){
		cin >> a;
		if(b){
			if(a >= f){
				lc = 0;
			}else if(a < f){
				lc++;
			}
			if(lc == l){
				b = 0;
				kc = 0;
				lc = 0;
			}
			
		}else{
			if(a > f){
				kc++;
				lc = 0;
			}else {
				kc = 0;
			}
			if(kc == k){
				b = 1;
				ksum++;
				lc = 0;
			}
		}
		
	}
	cout << ksum;
	
	
	
}