#include <bits/stdc++.h>
using namespace std;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FORR(x,arr) for(auto&& x:arr)
#define FOR(i,a,b) for (int i = (a); i < (b); i++)
#define RFOR(i,a,b) for (int i = (b)-1; i >= (a); i--)
#define REP(i,n) for (int i = 0; i < (n); i++)
#define RREP(i,n) for (int i = (n)-1; i >= 0; i--)
#define ALL(x) (x).begin(), (x).end()
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define RITR(x,c) for(__typeof(c.rbegin()) x=c.rbegin();x!=c.rend();x++)
#define BIT(n) (1LL<<(n))
#define SZ(x) ((int)(x).size())
typedef long long ll;
// -------------------------------------

#define MOD 1000000000

ll N, M;

ll dp[20101];

void Main() {
  cin >> N >> M;

  ll s = N / 1000;
  ll a = s - (s / M) * M;

  dp[0] = 1;

  FOR(i, 1, a+2) {
    FOR(j, 1, M+1) {
      (dp[j] += dp[j-1]) %= MOD;
    }
  }
  cout << dp[M-a] << endl;
}
int main() { cin.tie(0); ios::sync_with_stdio(false); Main(); return 0; }