結果
問題 |
No.104 国道
|
ユーザー |
![]() |
提出日時 | 2019-08-21 14:47:18 |
言語 | Haskell (9.10.1) |
結果 |
RE
|
実行時間 | - |
コード長 | 508 bytes |
コンパイル時間 | 4,796 ms |
コンパイル使用メモリ | 172,160 KB |
実行使用メモリ | 12,800 KB |
最終ジャッジ日時 | 2024-10-08 22:15:30 |
合計ジャッジ時間 | 12,348 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 RE * 1 |
other | AC * 13 TLE * 1 -- * 2 |
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:6:27: 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." | 6 | fromStringToBit s = fst $ head $ readInt 2 (`elem` "01") digitToInt t | ^^^^ Main.hs:22:14: 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." | 22 | print $ (head u) !! t | ^^^^ [2 of 2] Linking a.out
ソースコード
import Data.Char import Data.List import Numeric fromStringToBit :: String -> Int fromStringToBit s = fst $ head $ readInt 2 (`elem` "01") digitToInt t where t = map (\x -> if x == 'L' then '0' else '1') s tree :: Int -> [[Int]] tree = unfoldr f where f 0 = Nothing f 1 = Just ([1], 0) f x = Just ([2 ^ (x - 1) .. (2 ^ x - 1)], x - 1) main :: IO () main = do s <- getLine let t = fromStringToBit s u = tree $ (length s) + 1 print $ (head u) !! t