/* -*- coding: utf-8 -*-
 *
 * 129.cc: No.129 お年玉(2) - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_M = 10000;
const int MOD = 1000000000;

/* typedef */

typedef long long ll;

/* global variables */

int combs[MAX_M + 1][MAX_M + 1];

/* subroutines */

/* main */

int main() {
  ll n;
  int m;
  cin >> n >> m;

  int k = (n / 1000) % m;

  for (int i = 0; i <= m; i++) {
    combs[i][0] = combs[i][i] = 1;
    for (int j = 1; j < i; j++)
      combs[i][j] = (combs[i - 1][j - 1] + combs[i - 1][j]) % MOD;
  }

  printf("%d\n", combs[m][k]);
  return 0;
}