結果

問題 No.312 置換処理
ユーザー はむ吉🐹
提出日時 2015-12-05 01:04:38
言語 Haskell
(9.10.1)
結果
AC  
実行時間 66 ms / 2,000 ms
コード長 1,086 bytes
コンパイル時間 10,133 ms
コンパイル使用メモリ 173,312 KB
実行使用メモリ 13,696 KB
最終ジャッジ日時 2024-11-15 11:47:40
合計ジャッジ時間 11,812 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge4
このコードへのチャレンジ
（要ログイン）
ファイルパターン 結果
other AC * 45
権限があれば一括ダウンロードができます
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:26:22: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘head’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
   |
26 |     | notElem 2 fr = head fr
   |                      ^^^^
[2 of 2] Linking a.out

ソースコード

diff #
プレゼンテーションモードにする

-- | Generates the sequence of prime numbers.
-- Based on <http://qiita.com/little_Haskeller/items/614a3ae20a517c19bb1f this article> .
primes :: Integral a => [a]
primes = map fromIntegral primes'
    where
        primes' = [2, 3, 5] ++ sieve2 5 7 (drop 2 primes')
        sieve2 m s (p : ps) = [n | n <- ns, gcd m n == 1] ++ sieve2 (m * p) (p * p) ps
            where ns = [x + y | x <- [s, s + 6 .. p * p - 2], y <- [0, 4]]
-- | Factorizes the given integer using 'primes'.
-- Based on <https://wiki.haskell.org/Testing_primality this page>.
factorize :: Integral a => a -> [a]
factorize 1 = []
factorize n = factorize' n primes
    where
        factorize' n ps@(p : pr)
            | p * p > n    = [n]
            | m == 0       = p : factorize' d ps
            | otherwise    = factorize' n pr
            where (d, m) = divMod n p
getMinimum :: Integral a => a -> a
getMinimum n
    | h > 2        = h
    | elem 3 fs    = 3
    | notElem 2 fr = head fr
    | otherwise    = 4
    where
        fs@(h : fr) = factorize n
main :: IO ()
main = print . getMinimum =<< readLn
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0