#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <queue>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;

static const double EPS = 1e-8;
static const double PI = 4.0 * atan(1.0);
static const double PI2 = 8.0 * atan(1.0);

#define REP(i,n)	for(int i=0;i<(int)n;++i)
#define ALL(c)		(c).begin(),(c).end()
#define CLEAR(v)	memset(v,0,sizeof(v))
#define MP(a,b)		make_pair((a),(b))
#define ABS(a)		((a)>0?(a):-(a))
#define FOR(i,s,n)	for(int i=s;i<(int)n;++i)

#define MOD (1000000000)

ll c[10001][10001];

int main(int argc, char **argv) {
	ll N, M;
	cin >> N >> M;
	N /= 1000;
	N %= M;
	REP(i, M + 1) c[i][0] = c[i][i] = 1;
	FOR(i, 2, M + 1) FOR(j, 1, i) c[i][j] = (c[i - 1][j] + c[i - 1][j - 1]) % MOD;
	cout << c[M][N] << endl;
	return 0;
}