結果

問題 No.3030 ミラー・ラビン素数判定法のテスト
ユーザー かりあげクンかりあげクン
提出日時 2020-09-17 01:28:05
言語 Haskell
(9.8.2)
結果
CE  
(最新)
AC  
(最初)
実行時間 -
コード長 2,265 bytes
コンパイル時間 319 ms
コンパイル使用メモリ 149,888 KB
最終ジャッジ日時 2024-11-16 23:30:58
合計ジャッジ時間 833 ms
ジャッジサーバーID
(参考情報)
judge5 / judge3
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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:9:1: 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.
  |
9 | import qualified GHC.Integer.GMP.Internals as GMP
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ソースコード

diff #

{-# 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.Vector.Unboxed       as VU
import qualified GHC.Integer.GMP.Internals as GMP

isPrime :: Int -> Bool
isPrime k
  | k <= 3 = k == 2 || k == 3
  | even k = False
  | otherwise = millerRabin k
  where
    millerRabin :: Int -> Bool
    millerRabin 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 = m `unsafeShiftR` s

        loop [] = True
        loop (a:as)
          | powModInt (a `mod` n) d n /= 1 = (not allok) && loop as
          | otherwise = loop as
          where
            !allok = all (\r -> (powModInt a ((1 `unsafeShiftL` r) * d) n) /= m) [0..(s - 1)]

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

type Parser a = BSC8.ByteString -> Maybe (a, BSC8.ByteString)
parseInt :: Parser Int
parseInt = fmap (Arrow.second BSC8.tail) . BSC8.readInt
parse1 :: IO Int
parse1 = readLn
parseN :: Int -> IO (VU.Vector Int)
parseN n = VU.replicateM n parse1
-------------------------------------------------------------------------------
main :: IO ()
main = do
  n  <- parse1
  xs <- parseN n
  VU.mapM_ (BSC8.putStrLn . solve) xs

solve :: Int -> BSC8.ByteString
solve n = BSC8.pack $ bool (show n ++ " 0") (show n ++ " 1") (isPrime n)
-------------------------------------------------------------------------------
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