#include <fstream>

using namespace std;
ifstream cin("divk.in");
ofstream cout("divk.out");
int n,k,A,B,v[500003],a[500003],i,j;
unsigned long long x,s=0;
void citire()
{
    cin>>n>>k>>A>>B;
    for(i=1;i<=n;i++)
    {
        cin>>v[i];
    }
}
int main()
{
    citire();
    for(j=A;j<=B;j++)
    {
        for(i=n;i>n-j+1;i--)
            a[i]=v[i]+a[i+1];
        for(i=n-j+1;i>0;i--)
        {
            a[i]=v[i]+a[i+1]-v[i+j];
            if(a[i]%5==0)
            {
                //cout<<i<<" "<<j<<endl;
                s++;
            }
        }

    }
    cout<<s;
    return 0;
}