require 'set'; require 'prime'; require 'pp'
INF=Float::INFINITY; MOD=10**9+7
a,b,c = gets.chomp.split.map(&:to_i)
k = gets.chomp.to_i

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

if a<b && b < c
  puts 'Yes'
else
  puts 'No'
end


