#include <bits/stdc++.h>
using namespace std;

#define int long long

signed main(){
  long long N; cin >> N; N %= 1000000 + 7;
  cout << ( ( N / 2 + 1  ) * ( N - N / 2 + 1 ) - 1 ) % ( 1000000 + 7 ) << endl;
  return 0;
}