#include <bits/stdc++.h>
using namespace std;

int main()
{
long long A;
long long B;
long long N;

	cin >> N;

	A = N / 2;
	B = N - A;
	A %= 1000007;
	B %= 1000007;

	N %= 1000007;
	N += A * B;
	N %= 1000007;

	cout << N << endl;

	return 0;
}