#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <string>
using namespace std;



int main() {
	long long a,ans;
	cin >> a;
	ans = (((a - a / 2 + 1) % 1000007)*((a / 2 + 1) % 1000007) - 1) % 1000007;
	if (ans == -1) ans = 1000006;
	cout << ans << endl;
}