結果
| 問題 |
No.37 遊園地のアトラクション
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-10-21 15:14:47 |
| 言語 | Haskell (9.10.1) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,146 bytes |
| コンパイル時間 | 5,613 ms |
| コンパイル使用メモリ | 215,808 KB |
| 実行使用メモリ | 13,312 KB |
| 最終ジャッジ日時 | 2024-07-21 08:54:53 |
| 合計ジャッジ時間 | 18,087 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | -- * 4 |
| other | TLE * 1 -- * 26 |
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 ) [2 of 2] Linking a.out
ソースコード
{-# LANGUAGE BangPatterns #-}
import Control.Monad
import Control.Monad.Fix
import Control.Monad.State
import Data.Char
import Data.Coerce
import Data.IORef
import qualified Data.ByteString.Char8 as BSC8
import qualified Data.Vector.Fusion.Stream.Monadic as VFSM
import qualified Data.Vector.Unboxed as VU
import qualified Data.Vector.Unboxed.Mutable as VUM
main :: IO ()
main = do
t <- readLn :: IO Int
m <- readLn :: IO Int
cs <- seqInput m
vs <- seqInput m
dp <- VUM.unsafeNew 20000
rep m $ \i -> do
flip fix (vs VU.! i) $ \loop !k -> do
when (vs VU.! i > 0) $ do
rev t $ \j -> do
dpj <- VUM.unsafeRead dp j
dpjpci <- VUM.unsafeRead dp (j + cs VU.! i)
VUM.unsafeWrite dp (j + cs VU.! i) (max dpjpci (dpj + vs VU.! i))
loop (k `div` 2)
ans <- newIORef (0 :: Int)
rep (t + 1) $ \i -> do
dpi <- VUM.unsafeRead dp i
modifyIORef' ans (max dpi)
print =<< readIORef ans
stream :: Monad m => Int -> Int -> VFSM.Stream m Int
stream !l !r = VFSM.Stream step l
where
step x
| x < r = return $ VFSM.Yield x (x + 1)
| otherwise = return $ VFSM.Done
{-# INLINE [0] step #-}
{-# INLINE [1] stream #-}
rep :: Monad m => Int -> (Int -> m ()) -> m ()
rep n = flip VFSM.mapM_ (stream 0 n)
{-# INLINE rep #-}
streamR :: Monad m => Int -> Int -> VFSM.Stream m Int
streamR !l !r = VFSM.Stream step (r - 1)
where
step x
| x >= l = return $ VFSM.Yield x (x - 1)
| otherwise = return $ VFSM.Done
{-# INLINE [0] step #-}
{-# INLINE [1] streamR #-}
rev :: Monad m => Int -> (Int -> m ()) -> m ()
rev n = flip VFSM.mapM_ (streamR 0 n)
{-# INLINE rev #-}
type CParser a = StateT BSC8.ByteString Maybe a
runCParser :: CParser a -> BSC8.ByteString -> Maybe (a, BSC8.ByteString)
runCParser = runStateT
{-# INLINE runCParser #-}
int :: CParser Int
int = coerce $ BSC8.readInt . BSC8.dropWhile isSpace
{-# INLINE int #-}
seqInput :: Int -> IO (VU.Vector Int)
seqInput n = VU.unfoldrN n (runCParser int) <$> BSC8.getLine
{-# INLINE seqInput #-}