結果

問題 No.36 素数が嫌い!
ユーザー tottoripapertottoripaper
提出日時 2014-11-24 06:02:49
言語 Haskell
(9.8.2)
結果
AC  
実行時間 497 ms / 5,000 ms
コード長 661 bytes
コンパイル時間 2,063 ms
コンパイル使用メモリ 171,008 KB
実行使用メモリ 8,192 KB
最終ジャッジ日時 2024-06-27 00:13:11
合計ジャッジ時間 5,080 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 117 ms
8,064 KB
testcase_01 AC 14 ms
8,192 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 1 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 3 ms
5,376 KB
testcase_06 AC 4 ms
5,504 KB
testcase_07 AC 4 ms
5,632 KB
testcase_08 AC 1 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 164 ms
8,064 KB
testcase_12 AC 494 ms
8,064 KB
testcase_13 AC 497 ms
8,064 KB
testcase_14 AC 4 ms
5,376 KB
testcase_15 AC 1 ms
5,376 KB
testcase_16 AC 1 ms
5,376 KB
testcase_17 AC 1 ms
5,376 KB
testcase_18 AC 1 ms
5,376 KB
testcase_19 AC 24 ms
7,936 KB
testcase_20 AC 21 ms
8,064 KB
testcase_21 AC 70 ms
8,064 KB
testcase_22 AC 12 ms
8,064 KB
testcase_23 AC 7 ms
6,784 KB
testcase_24 AC 77 ms
7,936 KB
testcase_25 AC 91 ms
8,064 KB
testcase_26 AC 178 ms
8,064 KB
testcase_27 AC 14 ms
7,936 KB
testcase_28 AC 172 ms
7,936 KB
testcase_29 AC 7 ms
7,168 KB
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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:8:17: 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."
  |
8 | factor n = map (head &&& length) . group $ helper n 2
  |                 ^^^^

Main.hs:17:30: 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."
   |
17 |   | length fs == 2 && (snd . head . reverse . sortBy (comparing snd)) fs >= 2 = True
   |                              ^^^^

Main.hs:18:30: 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."
   |
18 |   | length fs == 1 && (snd . head . reverse . sortBy (comparing snd)) fs >= 3 = True
   |                              ^^^^
[2 of 2] Linking a.out

ソースコード

diff #

{-# LANGUAGE Arrows #-}

import Control.Arrow
import Data.List (group, sortBy)
import Data.Ord

factor 1 = []
factor n = map (head &&& length) . group $ helper n 2
  where
    helper n x
      | x * x > n = if n > 1 then [n] else []
      | n `mod` x == 0 = x : helper (n `div` x) x
      | otherwise = helper n (x+1)

can n
  | length fs > 2 = True
  | length fs == 2 && (snd . head . reverse . sortBy (comparing snd)) fs >= 2 = True
  | length fs == 1 && (snd . head . reverse . sortBy (comparing snd)) fs >= 3 = True
  | otherwise = False
  where
    fs = factor n

main = do
  n <- readLn
  putStrLn $ if can n then "YES" else "NO"
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