結果
問題 |
No.2299 Antitypoglycemia
|
ユーザー |
|
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 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 12 WA * 1 TLE * 12 |
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
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