#!/usr/bin/env ruby

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

K = gets.chomp.to_i + 1

K.times do
  warn [a, b, c].inspect
  if a < b && b < c
    puts 'Yes'
    exit
  end

  if a >= b
    b *= 2
    next
  end

  if b >= c
    c *= 2
  end
end

puts 'No'
