import java.util.Scanner;


public class Main_yukicoder72 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final long MOD = 1000007;
        long n = sc.nextLong();

        long i = n / 2;
        long max = ((i + 1) % MOD) * ((n - i + 1) % MOD) + MOD - 1;

		System.out.println(max % MOD);
        
        sc.close();
    }
}