#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  ll n;
  cin >> n;
  // 1 <= ue <= n: max (n - ue) * ue + ue + (n - ue)
  // = n * ue - ue^2 + n
  // = -u^2 + n * u + n
  // u = n/2
  constexpr ll MOD = 1e6 + 7;
  ll ue = n / 2 % MOD;
  ll sita = (n - n / 2) % MOD;
  ll ans = ue * sita + ue + sita;
  cout << ans % MOD << endl;
  return 0;
}