#include<fstream>
#include<cstdio>
#include<cstring>
#define MOD 2000003
#define NMAX 5001
using namespace std;
int n,k,v[NMAX],ind,ind2;
int comb[2][NMAX];
void precompute()
{
    ind=1;
    comb[ind][0]=1;
    comb[ind][1]=1;
    int i,j;
    for(i=2;i<=n-1;i++)
    {
        ind=(i-1)&1;
        ind2=i&1;
        for(j=1;j<=n;j++)
            comb[ind2][j]=0;
        comb[ind2][0]=1;
        for(j=1; j<=i; j++)
        {
            comb[ind2][j]=comb[ind][j]+comb[ind][j-1];
            if(comb[ind2][j]>=MOD)
                comb[ind2][j]-=MOD;
        }
    }
}
int main()
{
    freopen("sandokan.in","r",stdin);
    freopen("sandokan.out","w",stdout);
    scanf("%d%d",&n,&k);
    int i;
    for(i=1;i<=n;i++)
        scanf("%d",&v[i]);
    int p=n%(k-1);
    if(p==0)
    p=k-1;
    precompute();
    printf("%d\n",comb[ind2][p-1]);
    return 0;
}