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 Perl (v5.18.2) (judge verdict: Wrong Answer)

sub main {
    chomp(my $inp = <>);
    my @s = split(//, $inp);
    print calc()."\n";
}

sub calc {
    for my $i (1..$#s) {
        if ($i%2 == 1) {
            return 'No' unless ($s[$i-1] =~ /RUD/);
        } else {
            return 'No' unless ($s[$i-1] =~ /LUD/);
        }
    }
    return 'Yes';
}

main();