結果

問題 No.8030 ミラー・ラビン素数判定法のテスト
ユーザー かりあげクン
提出日時 2020-09-30 10:10:45
言語 Haskell
(9.10.1)
結果
CE  
(最新)
AC  
(最初)
実行時間 -
コード長 4,035 bytes
記録
記録タグの例:
初AC ショートコード 純ショートコード 純主流ショートコード 最速実行時間
コンパイル時間 156 ms
コンパイル使用メモリ 150,528 KB
最終ジャッジ日時 2024-11-16 23:33:19
合計ジャッジ時間 489 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
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コンパイルメッセージ
Loaded package environment from /home/judge/.ghc/x86_64-linux-9.8.2/environments/default
[1 of 2] Compiling Main             ( Main.hs, Main.o )

Main.hs:10:1: error: [GHC-87110]
    Could not load module ‘GHC.Integer.GMP.Internals’.
    It is a member of the hidden package ‘integer-gmp-1.1’.
    Use -v to see a list of the files searched for.
   |
10 | import qualified GHC.Integer.GMP.Internals         as GMP
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ソースコード

diff #
raw source code 

{-# LANGUAGE BangPatterns #-}
import qualified Control.Arrow                     as Arrow
import           Data.Bits                         (Bits (unsafeShiftL, unsafeShiftR),
                                                    FiniteBits (countTrailingZeros))
import           Data.Bool                         (bool)
import qualified Data.ByteString.Char8             as BSC8
import qualified Data.List                         as List
import qualified Data.Vector.Fusion.Stream.Monadic as MS
import qualified Data.Vector.Unboxed               as VU
import qualified GHC.Integer.GMP.Internals         as GMP
-------------------------------------------------------------------------------
main :: IO ()
main = do
  n <- readLn :: IO Int
  rep n $ \_ -> do
    x <- readLn :: IO Integer
    BSC8.putStrLn $ solve x
solve :: Integer -> BSC8.ByteString
solve n = BSC8.pack $ show n ++ (bool " 0"  " 1" (isPrime n))
-------------------------------------------------------------------------------
isPrime :: Integer -> Bool
isPrime k
  | k <= 3 = k == 2 || k == 3
  | even k = False
  | otherwise = millerRabin k
  where
    millerRabin :: Integer -> Bool
    millerRabin n
      | n < 18446744073709551616     = millerRabinSmall (fromInteger n)
      | n < 318665857834031151167461 = loop [2,3,5,7,11,13,17,19,23,29,31,37]
      | otherwise                    = loop [2,3,5,7,11,13,17,19,23,29,31,37,41]
      where
        !m = n - 1
        !s = cTZ m 0
        !d = m .>>. s
        cTZ :: Integer -> Int -> Int
        cTZ !i !cnt
          | odd i     = cnt
          | otherwise = cTZ (i .>>. 1) (cnt + 1)
        {-# INLINE cTZ #-}
        check1 :: Integer -> Bool
        check1 a = GMP.powModInteger a d n /= 1
        {-# INLINE check1 #-}
        check2 :: Integer -> Int -> Bool
        check2 a i = (GMP.powModInteger a (d * (1 .<<. i)) n) /= m
        {-# INLINE check2 #-}
        loop [] = True
        loop (a:as)
          | check1 a && allok = False
          | otherwise = loop as
          where
            allok = all (check2 a) [0..(s - 1)]

millerRabinSmall :: Int -> Bool
millerRabinSmall k
  | k <= 3 = k == 2 || k == 3
  | even k = False
  | otherwise = mr k
  where
    mr :: Int -> Bool
    mr n
      | n < 2047                = loop [2]
      | n < 1373653             = loop [2,3]
      | n < 9080191             = loop [31,73]
      | n < 25326001            = loop [2,3,5]
      | n < 4759123141          = loop [2,7,61]
      | n < 1122004669633       = loop [2,13,23,1662803]
      | n < 2152302898747       = loop [2,3,5,7,11]
      | n < 3474749660383       = loop [2,3,5,7,11,13]
      | n < 341550071728321     = loop [2,3,5,7,11,13,17]
      | otherwise               = loop [2,325,9375,28178,450775,9780504,1795265022]
      where
        !m = n - 1
        !s = countTrailingZeros m
        !d = unsafeShiftR m s
        check3 :: Int -> Bool
        check3 a = powModInt a d n /= 1
        {-# INLINE check3 #-}
        check4 :: Int -> Int -> Bool
        check4 a i = (powModInt a (d * (unsafeShiftL 1 i)) n) /= m
        {-# INLINE check4 #-}
        loop [] = True
        loop (a:as)
          | check3 a && allok = False
          | otherwise = loop as
          where
            allok = all (check4 a) [0..(s - 1)]
-------------------------------------------------------------------------------
rep :: (Monad m) => Int -> (Int -> m ()) -> m ()
rep n = flip MS.mapM_ (stream 0 n)
{-# INLINE rep #-}

stream :: (Monad m) => Int -> Int -> MS.Stream m Int
stream !l !r = MS.Stream step l
  where
    step x
        | x < r = return $ MS.Yield x (x + 1)
        | otherwise = return MS.Done
    {-# INLINE [0] step #-}
{-# INLINE [1] stream #-}

infixl 8 .>>., .<<.
(.>>.) :: Bits i => i -> Int -> i
(.>>.) = unsafeShiftR
{-# INLINE (.>>.) #-}

(.<<.) :: Bits i => i -> Int -> i
(.<<.) = unsafeShiftL
{-# INLINE (.<<.) #-}

powModInt :: Int -> Int -> Int -> Int
powModInt a n mo = fromInteger $ GMP.powModInteger (fromIntegral a) (fromIntegral n) (fromIntegral mo)
{-# INLINE powModInt #-}
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