output_description: Print a string representing the expected weather tomorrow, in the same format
  in which input is given.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      S
attempt: import sys
  
  stdin = sys.stdin
  
  sys.setrecursionlimit(10**7)
  
  
  def li():
      return map(int, stdin.readline().split())
  
  
  def li_():
      return map(lambda x: int(x) - 1, stdin.readline().split())
  
  
  def lf():
      return map(float, stdin.readline().split())
  
  
  def ls():
      return stdin.readline().split()
  
  
  def ns():
      return stdin.readline().rstrip()
  
  
  def lc():
      return list(ns())
  
  
  def ni():
      return int(stdin.readline())
  
  
  def nf():
      return float(stdin.readline())
  
  
  weather = ["Sunny", "Cloudy", "Rainy"]
  s = ns()
  
  if s == weather[0]:
      print(weather[1])
  elif s == weather[1]:
      print(weather[2])
  else:
      print(weather[0])
  
problem_description: Statement
  
  The weather in Takahashi's town changes day by day, in the following cycle:
  Sunny, Cloudy, Rainy, Sunny, Cloudy, Rainy, ...
  
  Given is a string S representing the weather in the town today. Predict the
  weather tomorrow.
samples: [{"input": "Sunny", "output": "Cloudy\n    \n\nIn Takahashi's town, a sunny day is followed by a cloudy day.\n\n* * *"}, {"input": "Rainy", "output": "Sunny"}]