#include <iostream>
using namespace std;
typedef long long LL;
const LL b = 1000000000;
int main()
{
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	LL n;
	int m;
	cin >> n >> m;
	
	int a = n / 1000 % m;
	
	if(a == 0)
		cout << 1 << endl;
	else{	
		int ans = 1;
		for(int i = m; i != a; --i){
			ans *= i;
			ans %= b;
		}
		
		for(int i = m - a; i != 1; --i){
			ans /= i;
		}
		cout << ans << endl;
	}
		
	return 0;
}