Problem:
Score: 100 points

Problem 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.

Constraints

S is Sunny, Cloudy, or Rainy.

Input

Input is given from Standard Input in the following format:

S

Output

Print a string representing the expected weather tomorrow, in the same format in which input is given.

Sample Input 1

Sunny

Sample Output 1

Cloudy

In Takahashi's town, a sunny day is followed by a cloudy day.

Sample Input 2

Rainy

Sample Output 2

Sunny

Solution in Python (3.4.3) (judge verdict: Accepted)

# 2019-11-18 17:34:23(JST)
import sys
# import collections
# import math
# from string import ascii_lowercase, ascii_uppercase, digits
# from bisect import bisect_left as bi_l, bisect_right as bi_r
# import itertools
# from functools import reduce
# import operator as op
# import re
# import heapq
# import array
# from scipy.misc import comb # (default: exact=False)
# import numpy as np 

weather = ['Sunny', 'Cloudy', 'Rainy']
mod = 3

def main():
    today = sys.stdin.readline().rstrip()
    
    tomorrow = weather[(weather.index(today)+1)%mod]
    print(tomorrow)
        
if __name__ == "__main__":
    main()