#include "bits/stdc++.h"
using namespace std;
#define print(x) cout<<x<<endl;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a) for(int i=0;i<a;i++)
#define printall(n,array) for(int i=0;i<n;i++){cout<<array[i];}cout<<endl;
typedef long long ll;
typedef pair<int, int> PI;
typedef pair<int, PI> V;
typedef vector<int> VE;
const ll mod = 1000000000;

ll ncr[10010][10010];

void nCr(int n){
  REP(i,n+1)REP(j,i+1){
    if(j==0)ncr[i][j]=1;
    else ncr[i][j]=(ncr[i-1][j]+ncr[i-1][j-1])%mod;
  }
}


int main(){
  ll n;
  ll m;
  cin>>n;
  cin>>m;
  ll rest=0;
  rest=(n%(1000*m));
  rest-=rest%1000;
  rest/=1000;
  nCr(m);
  print(ncr[m][rest]);
}