import java.io.PrintWriter;
import java.util.Scanner;

public class Main{
	public static void main(String[] args) {
		Scanner scanner=new Scanner(System.in);
		PrintWriter out=new PrintWriter(System.out);
		long n=Long.parseLong(scanner.next());
		int m=Integer.parseInt(scanner.next());
		int x=(int)(n/1000%m);
		final int MOD=1000000000;
		int[] c=new int[1];
		c[0]=1;
		for(int i=0; i<m; i++) {
			int[] nc=new int[i+2];
			for(int j=0; j<=i; j++) {
				nc[j]+=c[j];
				if(nc[j]>=MOD) nc[j]-=MOD;
				nc[j+1]+=c[j];
				if(nc[j+1]>=MOD) nc[j+1]-=MOD;
			}
			c=nc;
		}
		out.println(c[x]);
		out.close();
		scanner.close();
	}
}