//coded by:- aniketkoli183@gmail.com
//for more codes visit here:- https://jerryindia.home.blog/


#include<iostream>
using namespace std;

int main()
{
	int size;
	cin>>size;
	int *arr=new int[size-1];
	
	for(int i=0;i<size;i++)
	{
		cin>>arr[i];	
	}
	long int day,month,total=0,count=0;
	cin>>day;
	cin>>month;
	
	for(int i=0;i<size;i++)
	{
		
		
		for(int j=i;j<i+month;j++)
		{
						
			total+=arr[j];						
		}
		
		
		if(total==day)
		{
			count++;
			total=0;
		}	
		if(total!=day)
		{			
			total=0;
		}
	}
	
	
	cout<<count;
	return 0;
}