Bittipeli

import Data.List
import Data.Char
import Data.Maybe

type Group = (Char, Int)
type State = [Group]
type Move = Int

isBig :: Group -> Bool
isBig (_, n) = n > 1

makeMove :: State -> Int -> State
makeMove (a:_:c:rest) 1 = ((fst a, snd a + snd c):rest)
makeMove (x:xs) n = (x:makeMove xs (n-1))
makeMove _ _ = error "ei"

solve :: State -> Maybe [Move]
solve [] = Just []
solve [a] | isBig a   = Just [0]
          | otherwise = Nothing
solve [a, b] | isBig a && isBig b = Just [0, 0]
             | otherwise          = Nothing
solve state = case solutions of
  (solution:_) -> Just solution
  [] -> Nothing
  where solutions = map (\(c, Just m) -> (c:m)) $ filter (\(_, m) -> isJust m) generatedSolutions
        generatedSolutions = [(c, solve $ makeMove state i) | (c, i) <- bigPositions]
        positions = [1 .. (len - 2)]
        bigPositions = zip [0..] $ filter isBigPosition positions
        isBigPosition x = isBig (state!!x)
        len = length state

parseInput :: String -> State
parseInput input = map (\s -> (head s, length s)) $ group $ filter (not . isSpace) input

printSolution :: Maybe [Move] -> IO ()
printSolution solution = case solution of
  Just s ->
    putStrLn $ (show $ length s) ++ "\n" ++ intercalate " " (map (show . (\x -> x+1)) $ s)
  Nothing ->
    putStrLn "QAQ"

main :: IO ()
main = do input <- getLine
          let state = parseInput input
              solution = solve state
          printSolution solution

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: WRONG ANSWER

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: WRONG ANSWER

Test 6

Group: 1

Verdict: ACCEPTED

Test 7

Group: 1

Verdict: WRONG ANSWER

Test 8

Group: 1

Verdict: ACCEPTED

Test 9

Group: 1

Verdict: ACCEPTED

Test 10

Group: 1

Verdict: WRONG ANSWER

Test 11

Group: 1

Verdict: ACCEPTED

Test 12

Group: 1

Verdict: WRONG ANSWER

Test 13

Group: 1

Verdict: ACCEPTED

Test 14

Group: 1

Verdict: WRONG ANSWER

Test 15

Group: 1

Verdict: WRONG ANSWER

Test 16

Group: 1

Verdict: WRONG ANSWER

Test 17

Group: 1

Verdict: ACCEPTED

Test 18

Group: 1

Verdict: WRONG ANSWER

Test 19

Group: 1

Verdict: ACCEPTED

Test 20

Group: 1

Verdict: ACCEPTED

Test 21

Group: 2

Verdict: ACCEPTED

Test 22

Group: 2

Verdict: WRONG ANSWER

Test 23

Group: 2

Verdict: ACCEPTED

Test 24

Group: 2

Verdict: ACCEPTED

Test 25

Group: 2

Verdict: WRONG ANSWER

Test 26

Group: 2

Verdict: WRONG ANSWER

Test 27

Group: 2

Verdict: WRONG ANSWER

Test 28

Group: 2

Verdict: WRONG ANSWER

Test 29

Group: 2

Verdict: WRONG ANSWER

Test 30

Group: 2

Verdict: ACCEPTED

Test 31

Group: 2

Verdict: ACCEPTED

Test 32

Group: 2

Verdict: WRONG ANSWER

Test 33

Group: 2

Verdict: ACCEPTED

Test 34

Group: 2

Verdict: WRONG ANSWER

Test 35

Group: 2

Verdict: WRONG ANSWER

Test 36

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 37

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 38

Group: 2

Verdict: WRONG ANSWER

Test 39

Group: 2

Verdict: ACCEPTED

Test 40

Group: 2

Verdict: WRONG ANSWER

Test 41

Group: 3

Verdict: ACCEPTED

Test 42

Group: 3

Verdict: WRONG ANSWER

Test 43

Group: 3

Verdict: WRONG ANSWER

Test 44

Group: 3

Verdict: WRONG ANSWER

Test 45

Group: 3

Verdict: WRONG ANSWER

Test 46

Group: 3

Verdict: WRONG ANSWER

Test 47

Group: 3

Verdict: ACCEPTED

Test 48

Group: 3

Verdict: WRONG ANSWER

Test 49

Group: 3

Verdict: ACCEPTED

Test 50

Group: 3

Verdict: WRONG ANSWER

Test 51

Group: 3

Verdict: ACCEPTED

Test 52

Group: 3

Verdict: ACCEPTED

Test 53

Group: 3

Verdict: WRONG ANSWER

Test 54

Group: 3

Verdict: WRONG ANSWER

Test 55

Group: 3

Verdict: WRONG ANSWER

Test 56

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 57

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 58

Group: 3

Verdict: WRONG ANSWER

Test 59

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 60

Group: 3

Verdict: WRONG ANSWER

Test 61

Group: 4

Verdict: ACCEPTED

Test 62

Group: 4

Verdict: ACCEPTED

Test 63

Group: 4

Verdict: WRONG ANSWER

Test 64

Group: 4

Verdict: WRONG ANSWER

Test 65

Group: 4

Verdict: ACCEPTED

Test 66

Group: 4

Verdict: ACCEPTED

Test 67

Group: 4

Verdict: ACCEPTED

Test 68

Group: 4

Verdict: ACCEPTED

Test 69

Group: 4

Verdict: WRONG ANSWER

Test 70

Group: 4

Verdict: WRONG ANSWER

Test 71

Group: 4

Verdict: WRONG ANSWER

Test 72

Group: 4

Verdict: WRONG ANSWER

Test 73

Group: 4

Verdict: WRONG ANSWER

Test 74

Group: 4

Verdict: ACCEPTED

Test 75

Group: 4

Verdict: WRONG ANSWER

Test 76

Group: 4

Verdict: TIME LIMIT EXCEEDED

Test 77

Group: 4

Verdict: TIME LIMIT EXCEEDED

Test 78

Group: 4

Verdict: TIME LIMIT EXCEEDED

Test 79

Group: 4

Verdict: TIME LIMIT EXCEEDED

Test 80

Group: 4

Verdict: TIME LIMIT EXCEEDED