using System;
using System.Collections.Generic;

class Program
{
    static string InputPattern = "Input4";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("10000");
            WillReturn.Add("5");
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("24500");
            WillReturn.Add("9");
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("1000");
            WillReturn.Add("6");
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();
        ulong N = ulong.Parse(InputList[0]);
        ulong M = ulong.Parse(InputList[1]);

        //余った金額
        ulong RestVal = N % (1000 * M);
        Console.WriteLine(DeriveCombiCnt(M, RestVal / 1000));
    }

    //Aつの袋からBつの袋を選ぶ組み合わせの数を求める
    static ulong DeriveCombiCnt(ulong pA, ulong pB)
    {
        if (pA == 0) return 1;
        pB = Math.Min(pB, pA - pB);

        ulong WillReturn = 1;
        for (ulong I = pA; I >= pA - pB + 1; I--) {
            WillReturn *= (I % 1000000000);
            WillReturn %= 1000000000;
        }
        for (ulong I = 2; I <= pB; I++) {
            WillReturn /= I;
        }

        return WillReturn;
    }
}