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: Runtime Error)

import os
import sys

weather_list = ['Sunny', 'Cloudy', 'Rainy']

today_weather = sys.argv[1]

weather_index = weather_list.index(today_weather)

weather_index = weather_index+1 if len(weather_list)-1!=weather_index else 0

print(weather_list[weather_index])