Taco Dance Moves

You are given a string that represents a sequence of dance moves performed by a robot. Each character in the string is a command. The only valid commands are L, R, J, and C. If the command string contains any other character, the execution is considered invalid.

Mathematically, let \( s \) denote the input command string. The function \( f(s) \) is defined as:

\( f(s) = \begin{cases} s, & \text{if } s \subseteq \{L, R, J, C\} \\ "Invalid move!", & \text{otherwise} \end{cases} \)

The input consists of a single line, and the output should be printed to standard output (stdout). If all the moves in the string are valid, print the string itself; otherwise, print "Invalid move!".

inputFormat

The input is provided via standard input. It consists of a single line containing the command string.

outputFormat

The output should be printed via standard output. If every character in the command string is one of the valid moves (L, R, J, C), print the input string. Otherwise, print "Invalid move!".

LRJJC

LRJJC