import std.algorithm, std.array, std.container, std.range;
import std.string, std.conv, std.math, std.random;
import std.stdio, std.typecons;

const mod = 1000007;

void main()
{
  auto n = readln.chomp.to!long;

  auto k = n / 2;

  writeln((((k + 1) % mod) * ((n - k + 1) % mod) - 1 + mod) % mod);
}