#include <stdio.h>

int C(int n, int r){
	int i, j, tr;
	int tmp[10010]={0};
	long long int sum = 1;
	
	if( n < r ){return 0;}
	
	for(i=n;i>1;i--){
		if( r == i ){break;}
		if( (n-r) == i ){break;}
		tmp[i] = i;
	}
	tr = n-i;
	
	for(i=2;i<=tr;i++){
		for(j=n;j>1;j--){
			if(tmp[j]%i == 0){
				tmp[j] /= i;
			}
		}
	}
	
	for(i=1;i<=n;i++){
		if(tmp[i] != 0){
			sum = (sum*tmp[i])% 1000000000;
		}
	}
	return (int)(sum);
}

int main(void){
	long long int n,m,r;
	
	n=24500;
	m=9;
	
	scanf("%I64d", &n);
	scanf("%I64d", &m);
	
	r = (n / 1000) % m;
	
	printf("%d\n", C((int)m,(int)r));
	
	return 0;
}