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

public class Exercise100{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    long n = sc.nextLong();
    long m = sc.nextLong();

    long mod = 1000000000;

    if((n / 1000) % m == 0){
      System.out.println(1);
    }else{
      long bills = ((n / 1000) % m);
      BigInteger a = BigInteger.ONE;
      for(long i = 0; i < bills; i++){
        a = a.multiply(BigInteger.valueOf(m - i));
        a = a.divide(BigInteger.valueOf(i + 1));
      }
      System.out.println(a.remainder(BigInteger.valueOf(mod)));
    }
  }
}