N = gets.chomp
L = N.size

components = []
elems = []
elems << N[0]

1.upto(L - 1) do |i|
  e = N[i]

  if elems.last != e
    components << elems if elems[0] == '1'
    elems = [e]
  else
    elems << e
  end
end

components << elems if elems[0] == '1'

if components.size == 1 && components[0].size >= 2
  puts 'Yes'
elsif components.size == 2 && components.all? { |elems| elems.size == 1 }
  puts 'Yes'
else
  puts 'No'
end