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 JavaScript (node.js v5.12) (judge verdict: Wrong Answer)

function main(tapDance) {

  const odd = ['R', 'U', 'D'];
  const even = ['L', 'U', 'D'];

  for(var i = 1; i < tapDance.length; i++) {
    if (i % 2 == 1) {
      //奇数番目の処理
      if (odd.indexOf(tapDance[i-1])!==-1) {
        continue;
      } else {
        return 'No';
      }
    } else {
      //偶数番目の処理
      if (even.indexOf(tapDance[i-1])!==-1) {
        continue;
      } else {
        return 'No';
      }
    }
  }
  return 'Yes';
}

console.log(main(require("fs").readFileSync("/dev/stdin", "utf8").split('\n')[0].trim()));