using System;
using System.Linq;

class MainClass {
  public static void Main (string[] args) {
      var aqualunger_input = Console.ReadLine().Split().Select(s => int.Parse(s)).ToArray();
      var sharp_input = Console.ReadLine().Split().Select(s => int.Parse(s)).ToArray();

      int aq_x = aqualunger_input[0];
      int aq_y = aqualunger_input[1];
      int aq_h = aqualunger_input[2];

      int s_x = sharp_input[0];
      int s_y = sharp_input[1];
      int s_h = sharp_input[2];
      int s_v = sharp_input[3];

      Func<int, int, float> time = (s, v) => s / v;

      float time_before_x = time(Math.Abs(aq_x - s_x), s_v);
      float time_before_y = time(Math.Abs(aq_y - s_y), s_v);

      float time_before_death = time(s_h, s_v) + time_before_x + time_before_y;
      float time_to_escape = aq_h - time_before_x - time_before_y;

      float tmp = time_before_x + time_before_y;
      float new_h = aq_h - tmp;

      if (new_h >= s_h) {
        Console.WriteLine("NO");
      } else if (time_to_escape >= time_before_death) {
        Console.WriteLine("NO");
      } else {
        Console.WriteLine("YES");
      }

  }
}