#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>

using namespace std;

const int mod = 1000000000;

int main() {
	long long n;
	int m;

	cin >> n >> m;

	n /= 1000;
	int atari = n - (n / m) * m;

	vector< vector<int> > pascal;
	pascal.assign(m + 1, vector<int>(m + 1, 0));
	for (int i = 0; i <= m; i++) {
		pascal[i][0] = 1;
	}

	for (int i = 1; i <= m; i++) {
		for (int j = 1; j <= i; j++) {
			pascal[i][j] = (pascal[i][j - 1] + pascal[i][j]) % mod;
		}
	}

	cout << pascal[m][atari] << endl;
	return 0;
}