import java.util.*;
import java.math.BigInteger;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    long N = sc.nextLong();
    long M = sc.nextLong();
    N /= 1000;
    long r = N % M;
    BigInteger p1 = new BigInteger("1");
    for(int i = 2; i <= M; i++) {
      BigInteger p = new BigInteger(String.valueOf(i));
      p1 = p1.multiply(p);
    }
    for(int i = 2; i <= r; i++) {
      BigInteger p = new BigInteger(String.valueOf(i));
      p1 = p1.divide(p);
    }
    for(int i = 2; i <= M - r; i++) {
      BigInteger p = new BigInteger(String.valueOf(i));
      p1 = p1.divide(p);
    }
    p1 = p1.mod(new BigInteger("1000000000"));
    System.out.println(p1);
  }
}