using System;
using System.Collections;
using System.Collections.Generic;
 
class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		long rest=(N-N/M/1000*1000*M)/1000;
		if(rest>=M)rest=M;
		
		int[][] nCr=new int[2][];
		nCr[0]=new int[10001];
		nCr[0][0]=1;
		int now=1;int prev=0;
		int mod=(int)1e9;
		for(int i=1;i<=M;i++){
			now=i%2;
			prev=now^1;
			nCr[now]=new int[10001];
			nCr[now][0]=1;
			for(int j=1;j<=10000;j++){
				nCr[now][j]=(nCr[prev][j-1]+nCr[prev][j])%mod;
			}
		}
		Console.WriteLine(nCr[now][rest]);
		
		
		
		
		
	}
	long N,M;
	public Sol(){
		N=rl();M=rl();
	}




	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(){return Console.ReadLine().Split(' ');}
	static int[] ria(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>int.Parse(e));}
	static long[] rla(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>long.Parse(e));}
	static double[] rda(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>double.Parse(e));}
}