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 C++14 (GCC 5.4.1) (judge verdict: Accepted)

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define rep(i, n) for(int i = 0; i < (int)(n); i++)

using namespace std;

typedef long long ll;
typedef pair<int, int> P;
typedef pair<ll, ll> LP;

const int MOD = 100000;
const int INF = 1000000000;
const ll LINF = 1000000000000000000L;
const int dx[] = {1, 0, -1, 0};
const int dy[] = {0, 1, 0, -1};
const int ddx[] = {1, 1, 0, -1, -1, -1, 0, 1};
const int ddy[] = {0, 1, 1, 1, 0, -1, -1, -1};

int gcd(int a, int b) {
    if(b == 0) return a;
    return gcd(b, a % b);
}

int extgcd(int a, int b, int& x, int&y) {
    int d = a;
    if(b != 0) {
        d = extgcd(b, a % b, y, x);
        y -= (a / b) * x;
    }else {
        x = 1;
        y = 0;
    }
    return d;
}

int inv(int a) {
    int x, y;
    extgcd(a, MOD, x, y);
    return (x + MOD) % MOD;
}

int main() {
    string s;
    cin >> s;
    if(s == "Sunny") cout << "Cloudy" << endl;
    if(s == "Cloudy") cout << "Rainy" << endl;
    if(s == "Rainy") cout << "Sunny" << endl;
}