#include <vector>
#include <queue>
#include <deque>
#include <stack>
#include <map>
#include <set>
#include <algorithm>
#include <functional>
#include <iostream>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cctype>
#include <string>
#include <cstring>

using namespace std;

typedef long long ll;

#define MODN 1000007

int main() {
  ll n;
  cin >> n;
  
  if (n%2) {
    cout << ((n+1)/2-1+(((n+1)/2)%MODN)*(((n+1)/2)%MODN))%MODN << endl;
  }else {
    cout << (n/2+(((n/2+1))%MODN)*((n/2)%MODN))%MODN << endl;
  }

}