#include <algorithm>
#include <cstdio>
#include <cstdlib>
#include <cctype>
#include <cmath>
#include <iostream>
#include <queue>
#include <list>
#include <map>
#include <numeric>
#include <set>
#include <sstream>
#include <string>
#include <vector>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;

#define MOD 1000007

int main(){
  ll N;
  cin >> N;

  ll x;
  if(N%2==0){
    x = N/2;
  }else{
    x = (N-1)/2;
  }
  ll mx = ((N-x+1)%MOD)*(x%MOD)+(N-x);

  cout << mx%MOD << endl;
  return 0;
}