#include <iostream>
using namespace std;

int main() {
	long long n;
	cin >> n;

	const int mod = 1000007;
	long long bottom = n / 2;
	long long top = n - bottom;
	long long sum = (top % mod) * ((bottom + 1) % mod) + bottom;
	cout << sum % mod << endl;

	return 0;
}