#include <fstream>
using namespace std;

int v[100000000];
int suma (int s,int a)
{
    int sum=0;
    for (int i=s;i<a+s;++i)
    {
        sum+=v[i];
    }
    return sum;
}
int main ()
{
    ifstream fin ("divk.in");
    ofstream fout ("divk.out");
    int n,k,a,b,nr=0;
    fin>>n>>k>>a>>b;
    for (int i=0;i<n;++i)
    {
        fin>>v[i];
    }
    for (int i=a;i<=b;++i)
    {
        for (int j=0;j<=n-i;++j)
        {
            if (suma(j,i)%k==0 || k%suma(j,i)==0)
            {
                nr++;
            }
        }
    }
    fout<<nr;
}