結果
| 問題 |
No.1 道のショートカット
|
| コンテスト | |
| ユーザー |
情報学生
|
| 提出日時 | 2020-08-08 03:32:53 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 178 ms / 5,000 ms |
| コード長 | 1,542 bytes |
| コンパイル時間 | 10,929 ms |
| コンパイル使用メモリ | 181,044 KB |
| 実行使用メモリ | 7,168 KB |
| 最終ジャッジ日時 | 2024-07-20 16:51:11 |
| 合計ジャッジ時間 | 12,462 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 40 |
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
import qualified Control.Monad as Monad
import qualified Data.ByteString.Char8 as BSC8
import qualified Data.Char as Char
import qualified Data.List as List
getInt :: IO [Int]
getInt = List.unfoldr f <$> BSC8.getLine
where
f s = do
(n, s') <- BSC8.readInt s
return (n, BSC8.dropWhile Char.isSpace s')
getMultiLineInt :: Int -> IO [[Int]]
getMultiLineInt n = Monad.replicateM n getInt
main :: IO ()
main = do
n <- readLn :: IO Int
c <- readLn :: IO Int
_ <- readLn :: IO Int
xs <- map _func . List.transpose <$> getMultiLineInt 4
print $ solver n c xs
type City = Int
type Time = Int
type Money = Int
inf :: Int
inf = 1000000007
_func :: [Int] -> ((City, City), (Money, Time))
_func (a:b:c:d:_) = ((a, b), (c, d))
_func _ = error "error"
from :: ((City, City), (Money, Time)) -> City
from = fst . fst
to :: ((City, City), (Money, Time)) -> City
to = snd . fst
cost :: ((City, City), (Money, Time)) -> Money
cost = fst . snd
time :: ((City, City), (Money, Time)) -> Time
time = snd . snd
solver :: Int -> Int -> [((City, City), (Money, Time))] -> Int
solver n c xs = if ans < inf then ans else -1
where
ans = solver' 1 c
solver' m c'
| m == n = 0
| otherwise = foldr min inf [(table !! ((to r) - 1) !! (c' - (cost r))) + (time r) | r <- es]
where
es = [r | r <- xs, (from r) == m, c' - (cost r) >= 0]
table = [[solver' k d | d <- [0..c]] | k <- [1..n]]
情報学生