結果

問題 No.2299 Antitypoglycemia
ユーザー mtwtkman
提出日時 2023-05-14 19:50:09
言語 Haskell
(9.10.1)
結果
TLE  
実行時間 -
コード長 647 bytes
コンパイル時間 4,242 ms
コンパイル使用メモリ 171,904 KB
実行使用メモリ 45,820 KB
最終ジャッジ日時 2024-11-30 07:07:22
合計ジャッジ時間 47,484 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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ファイルパターン 結果
sample AC * 3
other AC * 12 WA * 1 TLE * 12
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:27:29: 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."
   |
27 |   let [n, a, b] = map read [head vs, vs !! 1, vs !! 2]
   |                             ^^^^
[2 of 2] Linking a.out

ソースコード

diff #
プレゼンテーションモードにする

split :: String -> [String]
split = go ("", [])
where
go :: (String, [String]) -> String -> [String]
go (a, acc) "" = acc <> [a]
go (a, acc) (' ' : xs) = go ("", acc <> [a]) xs
go (a, acc) (x : xs) = go (a <> [x], acc) xs
prompt :: IO [String]
prompt = do split <$> getLine
fac :: Integer -> Integer
fac 0 = 1
fac n = n * fac (n - 1)
solve :: Integer -> Integer -> Integer -> Integer
solve n a b =
( if a == b
then fac (n - 1)
else fac n - (fac (n - 1) * 2) + fac (n - 2)
)
`mod` 998244353
main :: IO ()
main = do
vs <- prompt
let [n, a, b] = map read [head vs, vs !! 1, vs !! 2]
print $ solve n a b
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