結果
| 問題 |
No.1032 数数え
|
| ユーザー |
|
| 提出日時 | 2020-11-20 23:50:55 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 42 ms / 2,000 ms |
| コード長 | 1,145 bytes |
| コンパイル時間 | 3,634 ms |
| コンパイル使用メモリ | 226,560 KB |
| 実行使用メモリ | 12,800 KB |
| 最終ジャッジ日時 | 2024-07-23 14:01:45 |
| 合計ジャッジ時間 | 4,555 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 10 |
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 OverloadedStrings #-}
{-# LANGUAGE TupleSections #-}
import Control.Monad.State
import Data.Char
import Data.Coerce
import System.IO
import qualified Data.ByteString.Builder as BSB
import qualified Data.ByteString.Char8 as BSC8
import qualified Data.Vector.Unboxed as VU
main :: IO ()
main = do
[n, m] <- map (read :: String -> Int) . words <$> getLine
ls <- seqInput n
let xs = VU.tail . VU.indexed . VU.unsafeAccumulate (+) (VU.replicate (m + 1) 0) . VU.map (, 1 :: Int) $ ls
VU.forM_ xs $ \(a, b) -> putBuilder $ BSB.intDec a <> BSB.byteString " " <> BSB.intDec b <> BSB.byteString "\n"
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 #-}
putBuilder :: BSB.Builder -> IO ()
putBuilder = BSB.hPutBuilder stdout
{-# INLINE putBuilder #-}