The Department of Defense is developing a new encryption method that is used for transporting the country$$s

secret military codes. The codes themselves have been encrypted by new award winning encryption methodology. A

separate decoding key is used to decrypt the sequence and return it back to the original. Your task is to write a

program in c that given an encrypted sequence along with the decoding key, recovers the original sequence.

The decoding key contains two different characters encoding two different operations: R and D$.$

$$ the character R reverses the numerical sequence;

$$ the character D drops the first element of the sequence.

There are a few cases where the original data is irrecoverable due to transmission errors. Your program should be

able to detect that and print error, instead of the recovered sequence. The errors should be reported whenever

there is an instruction that attempts to drop the first element of an empty sequence. $($Note$,$ that reversing an empty

sequence should not produce any problems.$)$

Input

The first line contains the decoding key k$(1<=$ length$($k$)<=105$

$)$ consisting of characters $$R$$ and $$D$.$

The next line contains the number of values in the encrypted sequence, n $(0<=$ n $<=105$

$).$

The last line contains the encrypted sequence itself $[$y$1,...,$ yn$],$ where $(1<=$ yi $<=100).$ The values are enclosed in a

set of square brackets $($i$.$e$.,$ start with $[$ and end with $]).$ The individual values are separated by commas and

nothing else.

Output

A single line containing either the decrypted sequence or $$error$.$ The resulting list should start with $[$ and end

with $].$ The integers in the input and output list are separated by commas and nothing else.

Example $1$

Input:

DD

$1$

$[42]$

Output:

error

Example $2$

Input:

RDD

$4$

$[1,2,3,4]$

Output:

$[2,1]$

Example $3$

Input:

RRRDD

$4$

$[1,2,3,4]$

Output:

$[2,1]$