triplu stecher (15) 20pct

#include <bits/stdc++.h>
using namespace std;
constexpr int MOD = 666013;

int getFact(int n) {
    int r = 1;
    for (int i = 1; i <= n; i++) {
        r = 1LL * r * i % MOD;
    }
    return r;
}

signed main() {
    int n, k;
    cin >> n >> k;
    cout << getFact(n) / getFact(n - k) << endl;
    return 0;
}