求助,不知道为啥WA了一个

# 冰雹猜想
n = int(input())
line = [n]
def ice(n):
  if n%2==0:
      n = n/2
      line.append(n)
  else:
      n = (n*3)+1
      line.append(n)
  if n!=1:
      ice(n)
  else:
      line.reverse()
  ice(n)
  for i in line:
      print("%.d"%i,end=" ")