#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <fstream>
#include <queue>
#include <complex>

#define INF 1145141919
#define EPS 1e-9
#define Pi acos(-1)

using namespace std;

typedef long long ll;

ll N, M;

int paskal[10001][10001];

int main(){

	cin >> N;
	cin >> M;

	paskal[1][0] = paskal[1][1] = 1;

	for (int i = 2; i <= 1000; i++){
		for (int j = 0; j <= i; j++){
			if (j == 0)
				paskal[i][j] = 1;
			else
				paskal[i][j] = paskal[i - 1][j - 1] + paskal[i - 1][j];
		}
	}

	ll num = N / M / 1000 * 1000;

	num = (N - num*M)/1000;

	cout << paskal[M][num] << endl;

	return 0;

}