#include<iostream>

using namespace std;

int main() {
	long long n, g, h, ans;
	cin >> n;

	h = n / 2 + 1;

	ans = ((h % 1000007)*((n - h + 2) % 1000007 + 1000007) - 1) % 1000007;

	cout << ans << endl;

	return 0;
}