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 Ruby (2.3.3) (judge verdict: Accepted)

# coding: utf-8
class Case01

  def initialize
    @whthers = { 'Sunny' => 'Cloudy',
                 'Cloudy' => 'Rainy',
                 'Rainy' => 'Sunny'}
  end

  def show
    p self.instance_variables
        .map{ |sym| [sym, self.instance_variable_get(sym)] }
        .to_h
  end
  
  # 実行する
  def execute
    read
    solve
    output
  end

  # 読込
  def read
    @s = gets.chomp
  end

  # 回答
  def solve
    @result = @whthers[@s]
  end
  
  # 出力
  def output
    puts @result
  end

end

Case01.new.execute if $0 == __FILE__