#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_int.hpp> // for use cpp_int
#include <boost/multiprecision/cpp_dec_float.hpp> // for use cpp_dec_float_100
using namespace std;
using namespace boost::multiprecision;
typedef long long ll;
#define rep(i, n) for(ll i = 0, i##_len = (n); i < i##_len; i++)
#define reps(i, s, n) for(ll i = (s), i##_len = (n); i < i##_len; i++)
#define rrep(i, n) for(ll i = (n) - 1; i >= 0; i--)
#define rreps(i, e, n) for(ll i = (n) - 1; i >= (e); i--)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) ((ll)(x).size())
#define len(x) ((ll)(x).length())
#define endl "\n"

cpp_int combination(ll n, ll r) {
	cpp_int bb = 1, bs = 1;
	rep(i, r) {
		bs *= n - i;
		bb *= i + 1;
	}
	return bs / bb;
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    // std::ifstream in("input.txt");
    // std::cin.rdbuf(in.rdbuf());
	const cpp_int mod = 1000000000;
    ll n, m;
    cin >> n >> m;
    ll rem = n / 1000 % m;
	cpp_int ans = combination(m, rem) % mod;
	cout << ans << endl;
    return 0;
}