package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)
var rdr = bufio.NewReaderSize(os.Stdin, 1000000)

func main() {
	sc.Split(bufio.ScanWords)
	n, m := nextInt(), nextInt()
	n -= n % 1000
	mod := (n/1000 - n/(1000*m)*m)
	fmt.Println(ncr(uint64(m), uint64(mod)))
}

func ncr(n, r uint64) uint64 {
	k := r
	if k > n/2 {
		k = n - r
	}

	ret := uint64(1)
	for i := uint64(1); i <= k; i++ {
		ret *= (n - i + 1) % 1000000000
		ret /= i
	}
	return ret % 1000000000
}
func nextLine() string {
	sc.Scan()
	return sc.Text()
}

func nextInt() int {
	i, _ := strconv.Atoi(nextLine())
	return i
}