#include <fstream>
using namespace std;

ifstream f("date.in");
ofstream g("date.out");

int main()
{
    short *ps,*ms;
    int n,k;

    f>>n>>k;
    if(k==1) g<<1;

    ps=new short[n+1];
    ms=new short[n+1];

    ps[0]=ps[1]=ms[1]=1;
    for(int i=2;i<=n;i++){
        ps[i]=(ps[i-1]+ms[i-1])%2011;
        ms[i]=ps[i-1]+ms[i-1];
        if(i>=k)
            ms[i]-=ps[i-k];
        ms[i]%=2011;
    }

    g<<(ms[n]+ps[n])%2011;

    return 0;
}