import java.io.*;
import java.util.*;

public class prog {

	BufferedReader br;
	PrintWriter out;
	StringTokenizer st;
	boolean eof;

	static final int P = 666013;

	int f(int n) {
		int ret = 0;
		int cur = 1;
		for (int i = n; i >= 1; i--) {
			cur = (int) ((long) cur * i % P);
			ret += cur;
			ret %= P;
		}
		return ret;
	}

	void solve() throws IOException {
		int n = nextInt();
		int ret = (f(2 * n) - 2 * f(n)) % P;
		if (ret < 0) {
			ret += P;
		}
		out.println(ret);
	}

	prog() throws IOException {
		br = new BufferedReader(new InputStreamReader(System.in));
		out = new PrintWriter(System.out);
		solve();
		out.close();
	}

	public static void main(String[] args) throws IOException {
		new prog();
	}

	String nextToken() {
		while (st == null || !st.hasMoreTokens()) {
			try {
				st = new StringTokenizer(br.readLine());
			} catch (Exception e) {
				eof = true;
				return null;
			}
		}
		return st.nextToken();
	}

	String nextString() {
		try {
			return br.readLine();
		} catch (IOException e) {
			eof = true;
			return null;
		}
	}

	int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}

	long nextLong() throws IOException {
		return Long.parseLong(nextToken());
	}

	double nextDouble() throws IOException {
		return Double.parseDouble(nextToken());
	}
}