結果

問題 No.36 素数が嫌い！
ユーザー poapoa
提出日時 2020-08-30 23:07:03
言語 Haskell
(9.10.1)
結果
TLE  
実行時間 -
コード長 457 bytes
コンパイル時間 10,094 ms
コンパイル使用メモリ 173,056 KB
実行使用メモリ 27,336 KB
最終ジャッジ日時 2024-11-15 15:58:27
合計ジャッジ時間 123,320 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3 WA * 1
other AC * 5 WA * 2 TLE * 19
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:8:23: 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 | primeFactors m = f m (head primes) (tail primes) where
  |                       ^^^^

Main.hs:8:37: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘tail’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
  |
8 | primeFactors m = f m (head primes) (tail primes) where
  |                                     ^^^^

Main.hs:12:24: 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."
   |
12 |     | otherwise = f m (head ns) (tail ns)
   |                        ^^^^

Main.hs:12:34: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘tail’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
   |
12 |     | otherwise = f m (head ns) (tail ns)
   |                                  ^^^^
[2 of 2] Linking a.out

ソースコード

diff # 

import           Data.Bool
import qualified Data.List as List

main :: IO ()
main = readLn >>= putStrLn . bool "NO" "YES" . (>= 3) . length . List.group . primeFactors

primeFactors :: Int -> [Int]
primeFactors m = f m (head primes) (tail primes) where
  f m n ns
    | m < 2 = []
    | m `mod` n == 0 = n : f (m `div` n) n ns
    | otherwise = f m (head ns) (tail ns)

primes :: [Int]
primes = f [2..] where f (p : ns) = p : f [n | n <- ns, n `mod` p /= 0]
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