import java.math.*;
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long n = sc.nextLong();
        long si = n/2;
        long ue = n-si;
        BigInteger a = new BigInteger(si+"");
        BigInteger aa = a.add(new BigInteger("1"));
        BigInteger b = aa.multiply(new BigInteger(ue+""));
        b = b.add(a);
        System.out.println(b.mod(new BigInteger("1000007")));
    }
}