#include <fstream>

using namespace std;

ifstream fin ("divk.in");
ofstream fout ("divk.out");

int k,a,b,v[1001],i,s,c,n;

int main()
{
    fin>>n>>k>>a>>b;

    for (i=1; i<=n; i++)
    {
        fin>>v[i];
        while (s%k!=0)
        {
            s=s+v[i];
        }
        if (s%k==0) {
        c++;
        s=0;
        }

    }
    fout<<c;
    return 0;
}