As we all know, Jinjin is your good friend, and today he made a game himself (unbelievable). He told you the rules of the game, it's the rules
In the game, there will be a string with length<=10 and only Minuscule
There are m instructions
There are m instructions (input required)
(Instruction 1)
Please flip the string and replace the original string
(Instruction 2)
Enter another string (no space, only Minuscule), flip it and splice it to the original string
(Instruction 3)
Add the previous' yyds' string after the original string
(Instruction 4)
Subtract all characters in the original string by three ascii codes, where a ->x, b ->y, c ->z
Please output the k-th bit of the string
(Jinjin thinks no one can complete it, smart you, come on!)
