import java.io.*; import java.util.*; public class Main { static final int MOD = 1000000000; public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); long n = sc.nextLong() / 1000; int m = sc.nextInt(); int[][] comb = new int[m + 1][m + 1]; for (int i = 0; i <= m; i++) { for (int j = 0; j <= i; j++) { if (j == 0 || j == i) { comb[i][j] = 1; } else { comb[i][j] = (comb[i - 1][j - 1] + comb[i - 1][j]) % MOD; } } } System.out.println(comb[m][(int)(n % m)]); } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }