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#include <fstream>
using namespace std;
ifstream fin("sandokan.in");
ofstream fout("sandokan.out");
int n,k,i,j,x,y,d[3][5005];
int main()
{
fin >> n >> k;
k--;
for (i=1;i<=n;i++) fin >> x;
d[0][1]=1;
x=1;
for (i=1;i<=n;i++)
{
if (x==0) y=1;
else y=0;
d[x][0]=1;
for (j=i;j>=1;j--)
{
d[x][j]=d[y][j-1]+d[y][j];
d[x][j]%=2000003;
}
x=1-x;
}
fout << d[x][k];
return 0;
}