#include <iostream>
using namespace std;
template<int MOD> struct MInt {
  long long val;
  MInt(long long val) : val(val % MOD) {}
  MInt operator+(const MInt& n) const { return MInt(val) += n; }
  MInt operator*(const MInt& n) const { return MInt(val) *= n; }
  MInt& operator+=(const MInt& n) { val = (val + n.val) % MOD; return *this; }
  MInt& operator*=(const MInt& n) { val = (val * n.val) % MOD; return *this; }
  friend ostream& operator<<(ostream& os, const MInt& n) { os<<n.val; return os; }
};
using mint = MInt<1000000007>;
int main() {
  long long N; cin >> N; N -= 4;
  long long n = N / 6;
  mint ans = mint(n+1) * mint(3 * n + (N % 6));
  cout << ans + (N % 6 == 0) << endl;
    return 0;
}