Nim game

You are encouraged to solve this task according to the task description, using any language you may know.
Nim is a simple game where the second player ─── if they know the trick ─── will always win.



The game has only 3 rules:

   start with   12   tokens
   each player takes   1,  2,  or  3   tokens in turn
  the player who takes the last token wins.


To win every time,   the second player simply takes 4 minus the number the first player took.   So if the first player takes 1,   the second takes 3 ─── if the first player takes 2,   the second should take 2 ─── and if the first player takes 3,   the second player will take 1.



Task

Design a simple Nim game where the human player goes first, and the computer always wins. The game should enforce the rules.




## Nim game
##
 
tokens <- 12
 
while(tokens > 0) {
  print(paste("Tokens remaining:",tokens))
  playertaken <- 0
  while(playertaken == 0) {
    playeropts <- c(1:min(c(tokens,3)))
    playertaken <- menu(playeropts, title = "Your go, how many tokens will you take? ")
    tokens <- tokens - playertaken
    if(tokens == 0) {print("Well done you won, that shouldn't be possible!")}
  }
  cputaken <- 4 - playertaken
  tokens <- tokens - cputaken
  print(paste("I take",cputaken,"tokens,",tokens,"remain"))
  if(tokens == 0) {print("I win!")}
 
}
 