-- Try yukicoder -- author: Leonardone @ NEETSDKASU import Data.Char (digitToInt) import Data.Word (Word64) import Data.Bits import Data.List (sortOn) main = interact $ unlines . map format . solve . parse . lines parse (nkstr:lsstr:tbstr) = ret where [n, k] = map read $ words nkstr ls = zip [0..] . map read $ words lsstr tb = zip [1..] $ map mf tbstr :: [(Int, Word64)] ret = (n, k, ls, tb) mf = fromInteger . foldl f 0 f a b = shiftL a 1 .|. (toInteger $ digitToInt b) format ((_, l), (y, x)) = unwords $ map show [y, x, y, x + l - 1] solve (n, k, ls, tb) = ans where solve' = foldl (fix n) ([], tb) base = score tb nosol = map (\e -> (e, (1, 1))) ls sol1 = solve' ls sol2 = solve' $ reverse . sortOn snd $ ls es = [sol1, sol2] ++ xs (ret, _) = foldl cmp (nosol, base) es ans = sortOn fst ret cmp o@(sol, sc) (sol', tb') = ret where sc' = score tb' ret = if sc < sc' then o else (sol', sc') xs = map (solve' . snd) . take 3 $ iterate shuffle (19831983, ls) fullbits n = shiftL 1 n - 1 setbits t x s = t `xor` shiftL x s getbits x (s, t) = shiftR t s .&. x find n l t = ret where fb = fullbits l mf1 s = (s, setbits t fb s) mf2 nb = (popCount . getbits fb $ snd nb, nb) bs = map mf1 [0..n-l] nbs = zip [n-l+1-i | i <- [0..]] bs ret = foldl1 f $ map mf2 nbs f a b = if fst a < fst b then a else b get tb n l = ret where ret = foldl1 f $ map mf tb mf (y, t) = (y, find n l t) f a b = if fst (snd a) < fst (snd b) then a else b fix n (r, tb) li@(_, l) = ret where (y, (_, (x, (_, b)))) = get tb n l ret = ((li,(y, x)):r, swap b (y-1) tb) swap u 0 ((i, _):es) = (i, u) : es swap u p (e:es) = e : swap u (p-1) es xorshift a = d :: Word64 where b = a `xor` shiftL a 13 c = b `xor` shiftR b 7 d = c `xor` shiftL c 17 shuffle (xsft, ls) = shake len xsft ls where len = fromInteger . toInteger $ length ls tohead 0 (x:xs) f = x : f xs tohead p (x:xs) f = tohead (p-1) xs (\es -> f $ x:es) shake 0 x es = (x, es) shake n x es = shake (n-1) x2 es2 where x2 = xorshift x p = x `mod` len es2 = tohead p es id score tb = sc where sc = foldl1 (+) $ map (popCount . snd) tb