結果
問題 |
No.300 平方数
|
ユーザー |
![]() |
提出日時 | 2017-01-13 00:34:07 |
言語 | Haskell (9.10.1) |
結果 |
TLE
|
実行時間 | - |
コード長 | 468 bytes |
コンパイル時間 | 10,061 ms |
コンパイル使用メモリ | 171,264 KB |
実行使用メモリ | 14,884 KB |
最終ジャッジ日時 | 2024-12-21 10:17:24 |
合計ジャッジ時間 | 49,829 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 21 TLE * 22 |
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: warning: [GHC-94817] [-Wtabs] Tab character found here, and in four further locations. Suggested fix: Please use spaces instead. | 10 | where | ^^^^^^^^ Main.hs:14:25: warning: [GHC-63394] [-Wx-partial] In the use of ‘head’ (imported from Data.List, 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." | 14 | solve x = product $ map head $ filter (odd . length) $ group $ factorization x | ^^^^ [2 of 2] Linking a.out
ソースコード
import Data.List -- ref: http://d.hatena.ne.jp/mokehehe/20070615/factorization factors :: Integral a => a -> [a] factors n = [x | x <- [1..n], n `mod` x == 0] factorization :: Integral a => a -> [a] factorization 1 = [] factorization x = v : factorization (x `div` v) where v = (factors x) !! 1 solve :: Integral a => a -> a solve x = product $ map head $ filter (odd . length) $ group $ factorization x main = do n <- readLn putStrLn $ show $ solve n