#include <bits/stdc++.h>
#include <assert.h>

using namespace std;

int main()
{
	long long n;
	cin >> n;
	unsigned long long m[3] = {0, 1, 1};
	for (int i = 3; i <= n; i++)
		m[i % 3] = (m[(i - 1) % 3] + m[(i - 2) % 3]) % 1000000007;
	cout << (m[n % 3] + m[(n - 1) % 3]) * m[n % 3] % 1000000007 << endl;

	return 0;
}