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 Scala (2.11.7) (judge verdict: Accepted)

import scala.io.Source

object Main {
  val list = Seq("Sunny", "Cloudy", "Rainy")

  def succ(x: String): String = {
    (list zip (list.tail :+ list.head)).toMap.get(x).get
  }

  def main(args: Array[String]) {
    val s = Source.stdin.getLines.toSeq.head
    println(succ(s))
  }
}