import java.util.Arrays;
import java.util.Scanner;
// 変なMODとり
public class Yuki129 {

    int MOD=1000000000;

    public long combination(int N, int K) {
        long ans = 1;
        for (int i = 1; i <= K; i++) {
            ans *= (N - i + 1);
            ans /= i;
        }
        return ans;
    }

    public Yuki129() {
        Scanner scanner = new Scanner(System.in);
        long N = scanner.nextLong();
        int M = scanner.nextInt();


        long A = (N / 1000) / M;
        int K = (int)(N / 1000 - A * M);

        long ans = combination(M, K);
        System.out.println(ans % MOD);

    }

    public static void main(String[] args) {
        Yuki129 hoge = new Yuki129();
    }
}