a, b, c = gets.chomp.split.map(&:to_i)
k = gets.chomp.to_i

k.times do |i|
  if a > b
    b = b * 2
    next
  end
  
  if b > c
    c = c * 2
    next
  end
end

if a < b and b < c
  puts "Yes"
else
  puts "No"
end