#include <iostream>
#include <cstring>
#include <algorithm>
#include <limits.h>
#include <cmath>
#include <time.h>
#include <functional>
#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)
#define MOD1 1000000007;
#define MOD2 1000007
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
/* ここからが本編 */
/*  */
int main(void)
{
  int test = 0;
  int i,j,k,l;
  ull N;
  ull a;
  cin >> N;
  a = N/2;
  cout << ((a+1)*(N-a+1)-1)%MOD2 << endl;
  return 0;
}