array = gets.split.map(&:to_i)                                                                                                         
if (0..array[0]).include? array[2] then                                                                                                
  if (0..array[1]).include? array[3] then                                                                                              
    puts "Yes"                                                                                                                         
  end                                                                                                                                  
else                                                                                                                                   
  puts "No"                                                                                                                            
end