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

while a >= b || b >= c
  while a >= b do
    b *= 2
    k -= 1
  end

  while b >= c do
    c *= 2
    k -= 1
  end
end

if k >= 0
  print('Yes')
else
  print('No')
end