#409871 (Haskell) No.955 ax^2+bx+c=0

提出ソース

結果

問題	No.955 ax^2+bx+c=0
ユーザー	Leonardone
提出日時	2019-12-18 03:47:02
言語	Haskell (9.8.2)
結果	WA
実行時間	-
コード長	998 bytes
コンパイル時間	1,249 ms
コンパイル使用メモリ	175,104 KB
実行使用メモリ	6,948 KB
最終ジャッジ日時	2024-07-07 00:26:28
合計ジャッジ時間	3,463 ms
ジャッジサーバーID （参考情報）	judge3 / judge5

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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	1 ms 6,812 KB
testcase_01	AC	1 ms 6,940 KB
testcase_02	AC	2 ms 6,940 KB
testcase_03	AC	1 ms 6,940 KB
testcase_04	AC	1 ms 6,944 KB
testcase_05	AC	2 ms 6,944 KB
testcase_06	AC	1 ms 6,944 KB
testcase_07	AC	1 ms 6,940 KB
testcase_08	AC	1 ms 6,940 KB
testcase_09	AC	1 ms 6,940 KB
testcase_10	AC	2 ms 6,940 KB
testcase_11	AC	2 ms 6,944 KB
testcase_12	AC	1 ms 6,940 KB
testcase_13	AC	1 ms 6,940 KB
testcase_14	AC	1 ms 6,944 KB
testcase_15	AC	1 ms 6,940 KB
testcase_16	AC	1 ms 6,940 KB
testcase_17	AC	1 ms 6,940 KB
testcase_18	AC	1 ms 6,940 KB
testcase_19	AC	2 ms 6,944 KB
testcase_20	AC	1 ms 6,940 KB
testcase_21	AC	1 ms 6,940 KB
testcase_22	AC	1 ms 6,944 KB
testcase_23	AC	2 ms 6,940 KB
testcase_24	AC	1 ms 6,944 KB
testcase_25	AC	2 ms 6,944 KB
testcase_26	AC	1 ms 6,940 KB
testcase_27	AC	1 ms 6,940 KB
testcase_28	AC	1 ms 6,940 KB
testcase_29	AC	1 ms 6,944 KB
testcase_30	AC	1 ms 6,940 KB
testcase_31	AC	2 ms 6,944 KB
testcase_32	AC	1 ms 6,944 KB
testcase_33	AC	1 ms 6,944 KB
testcase_34	WA	-
testcase_35	WA	-
testcase_36	WA	-
testcase_37	WA	-
testcase_38	WA	-
testcase_39	WA	-
testcase_40	WA	-
testcase_41	WA	-
testcase_42	WA	-
testcase_43	WA	-
testcase_44	WA	-
testcase_45	WA	-
testcase_46	WA	-
testcase_47	WA	-
testcase_48	WA	-
testcase_49	WA	-
testcase_50	WA	-
testcase_51	WA	-
testcase_52	WA	-
testcase_53	WA	-
testcase_54	WA	-
testcase_55	WA	-
testcase_56	WA	-
testcase_57	WA	-
testcase_58	AC	2 ms 6,944 KB
testcase_59	AC	1 ms 6,940 KB
testcase_60	AC	1 ms 6,940 KB
testcase_61	AC	1 ms 6,944 KB
testcase_62	AC	1 ms 6,944 KB
testcase_63	AC	1 ms 6,944 KB
testcase_64	AC	2 ms 6,944 KB
testcase_65	AC	2 ms 6,944 KB
testcase_66	AC	1 ms 6,940 KB
testcase_67	AC	2 ms 6,944 KB
testcase_68	AC	1 ms 6,944 KB
testcase_69	AC	1 ms 6,940 KB
testcase_70	AC	1 ms 6,940 KB
testcase_71	AC	1 ms 6,944 KB
testcase_72	AC	1 ms 6,940 KB
testcase_73	AC	1 ms 6,944 KB
testcase_74	AC	1 ms 6,944 KB
testcase_75	AC	1 ms 6,944 KB
testcase_76	AC	2 ms 6,944 KB
testcase_77	AC	1 ms 6,944 KB
testcase_78	AC	1 ms 6,940 KB
testcase_79	AC	1 ms 6,940 KB
testcase_80	AC	1 ms 6,940 KB
testcase_81	AC	1 ms 6,944 KB
testcase_82	AC	1 ms 6,940 KB
testcase_83	AC	1 ms 6,940 KB
testcase_84	AC	2 ms 6,940 KB
testcase_85	AC	1 ms 6,944 KB
testcase_86	AC	1 ms 6,940 KB
testcase_87	AC	1 ms 6,940 KB
testcase_88	AC	1 ms 6,940 KB
testcase_89	AC	1 ms 6,944 KB
testcase_90	AC	1 ms 6,940 KB
testcase_91	AC	2 ms 6,940 KB
testcase_92	AC	1 ms 6,940 KB
testcase_93	AC	2 ms 6,944 KB
testcase_94	AC	2 ms 6,944 KB
testcase_95	AC	1 ms 6,944 KB
testcase_96	AC	1 ms 6,940 KB
testcase_97	AC	1 ms 6,940 KB
testcase_98	AC	2 ms 6,944 KB
testcase_99	AC	1 ms 6,940 KB
testcase_100	AC	1 ms 6,940 KB
testcase_101	AC	1 ms 6,940 KB
testcase_102	AC	1 ms 6,948 KB
testcase_103	AC	1 ms 6,940 KB
testcase_104	AC	2 ms 6,940 KB
testcase_105	AC	1 ms 6,944 KB
testcase_106	AC	1 ms 6,944 KB
testcase_107	AC	2 ms 6,944 KB
testcase_108	AC	2 ms 6,944 KB
testcase_109	AC	1 ms 6,940 KB
testcase_110	AC	1 ms 6,940 KB
testcase_111	AC	1 ms 6,944 KB
testcase_112	AC	1 ms 6,940 KB
testcase_113	AC	1 ms 6,948 KB
testcase_114	AC	1 ms 6,944 KB
testcase_115	AC	1 ms 6,944 KB
testcase_116	AC	1 ms 6,940 KB
testcase_117	AC	2 ms 6,944 KB
testcase_118	AC	1 ms 6,940 KB
testcase_119	AC	2 ms 6,944 KB
testcase_120	AC	1 ms 6,940 KB
testcase_121	AC	1 ms 6,940 KB
testcase_122	WA	-
testcase_123	RE	-
testcase_124	RE	-

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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:4:75: 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."
  |
4 | main = interact $ unlines . concat . zipWith ($) [return . show . floor . head, map show . tail] . repeat . solve . map read . words
  |                                                                           ^^^^

Main.hs:4:92: 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."
  |
4 | main = interact $ unlines . concat . zipWith ($) [return . show . floor . head, map show . tail] . repeat . solve . map read . words
  |                                                                                            ^^^^
[2 of 2] Linking a.out

ソースコード

raw source code

-- Try yukicoder
-- author: Leonardone @ NEETSDKASU

main = interact $ unlines . concat . zipWith ($) [return . show . floor . head, map show . tail] . repeat . solve . map read . words

solve (0:0:0:_) = [-1]
solve (0:0:_:_) = [0]
solve (0:b:c:_) = [1, fromIntegral (-c) / fromIntegral b]
solve (a:0:0:_) = [1, 0]
solve (a:0:c:_) | e < 0     = undefined -- [0]
                | otherwise = undefined -- [2, - sqrt e, sqrt e]
                where e = fromIntegral (-c) / fromIntegral a
solve (a:b:0:_) = undefined -- [2, min 0 x, max 0 x]
                where x = fromIntegral (-b) / fromIntegral a
solve (a:b:c:_) | d < 0  = [0]
                | d == 0 = [1, fromIntegral (-b) / fromIntegral (2*a)]
                | d > 0  = [2, min y z, max y z]
                where d = b * b - 4 * a * c
                      y = (fromIntegral (-b) + sqrt (fromIntegral d)) / fromIntegral (2*a)
                      z = (fromIntegral (-b) - sqrt (fromIntegral d)) / fromIntegral (2*a)
solve _ = undefined