n = gets.chomp.to_i
@aaa = []

def f(n)
  zzz = 0
  @aaa.push(n)
  if n%2 == 0
    zzz = n/2
  elsif n ==1
    @aaa =[1]
    p @aaa.length-1
    p @aaa.max
    return
  else
    zzz = 3*n+1
  end
  if zzz == 1
    @aaa.push(1)
    p @aaa.length-1
    p @aaa.max
    return
  end
  f(zzz)
end

f(n)