結果
| 問題 | No.2299 Antitypoglycemia |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-05-14 19:50:09 |
| 言語 | Haskell (9.14.1) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 647 bytes |
| 記録 | |
| コンパイル時間 | 937 ms |
| コンパイル使用メモリ | 197,376 KB |
| 実行使用メモリ | 33,280 KB |
| 最終ジャッジ日時 | 2026-05-23 23:15:20 |
| 合計ジャッジ時間 | 4,778 ms |
|
ジャッジサーバーID (参考情報) |
judge2_0 / judge3_1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | TLE * 1 -- * 24 |
コンパイルメッセージ
Loaded package environment from /home/judge/.ghc/x86_64-linux-9.14.1/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.Internal.List):
"This is a partial function, it throws an error on empty lists. Use pattern matching, 'Data.List.uncons' or 'Data.Maybe.listToMaybe' 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
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