結果
| 問題 |
No.300 平方数
|
| コンテスト | |
| ユーザー |
くれちー
|
| 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
くれちー