#include <iostream>
#include <vector>

using namespace std;

int main()
{
    int n,k,l,f;
    cin>>n>>k>>l>>f;
    vector<int>h(n);
    int db=0, days_hot=0, days_cold=0;
    bool hosegriado=false;
    for(int i=0; i<n; i++){
        cin>>h[i];
        if(h[i]>f){
            days_hot++;
            days_cold=0;
        }
        else if(h[i]<f){
            days_cold++;
            days_hot=0;
        }
        if(days_hot==k){
            if(!hosegriado)
                db++;
            else
                hosegriado=true;

        }
        if(days_cold==l)
            hosegriado=false;
    }

    cout<<db;
    return 0;
}