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//sandokan -> C(n-1, n%k);
#include <fstream>
#define DIM 2000003
using namespace std;
ifstream fin ("sandokan.in" );
ofstream fout("sandokan.out");
int n, m, i, j, k, ok, x;
long long val1, val2, maxim;
void SetUp(){
fin >> n >> k;
return;
}
void Code(){
val1 = 1; x = n / k; val2 = 1;
for(i = x; i <= n; i ++)
val1 = (val1 * i) % DIM;
for(i = 2; i <= n-x+1; i ++)
val2 = (val2 * i) % DIM;
fout << (val1 / val2) % DIM;
}
int main(){
SetUp();
Code();
return 0;
}