#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <functional>
#include <set>

using namespace std;

const long long mod=1000007;

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

	//(x+1)(n-x+1)の最大化

	long long x=n/2;
	long long res=((x+1)%mod)*((n-x+1)%mod)-1;

	if(res==0) res=mod-1;
	else res%=mod;

	cout<<res<<endl;

	return 0;

}