結果
問題 | No.7 プライムナンバーゲーム |
ユーザー | okaduki |
提出日時 | 2016-05-05 00:42:29 |
言語 | Haskell (9.8.2) |
結果 |
AC
|
実行時間 | 2,384 ms / 5,000 ms |
コード長 | 1,708 bytes |
コンパイル時間 | 4,404 ms |
コンパイル使用メモリ | 174,080 KB |
実行使用メモリ | 12,160 KB |
最終ジャッジ日時 | 2024-04-09 04:00:03 |
合計ジャッジ時間 | 17,723 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,820 KB |
testcase_01 | AC | 1 ms
6,948 KB |
testcase_02 | AC | 2,384 ms
11,904 KB |
testcase_03 | AC | 131 ms
9,216 KB |
testcase_04 | AC | 34 ms
8,704 KB |
testcase_05 | AC | 33 ms
8,576 KB |
testcase_06 | AC | 655 ms
11,008 KB |
testcase_07 | AC | 432 ms
9,984 KB |
testcase_08 | AC | 183 ms
9,472 KB |
testcase_09 | AC | 1,013 ms
10,880 KB |
testcase_10 | AC | 1 ms
6,944 KB |
testcase_11 | AC | 436 ms
9,856 KB |
testcase_12 | AC | 1,677 ms
12,160 KB |
testcase_13 | AC | 1,789 ms
12,040 KB |
testcase_14 | AC | 2,374 ms
12,160 KB |
testcase_15 | AC | 2,247 ms
12,032 KB |
testcase_16 | AC | 2,066 ms
12,020 KB |
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:31:12: warning: [GHC-63394] [-Wx-partial] In the use of ‘tail’ (imported from Prelude, but defined in GHC.List): "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty." | 31 | bits = tail . reverse . map (`mod` 2) . takeWhile (>0) . iterate (`div` 2) | ^^^^ [2 of 2] Linking a.out
ソースコード
import Control.Applicative import Control.Monad import qualified Data.ByteString.Char8 as B import Data.Maybe (fromJust) import Text.Printf import Debug.Trace class MemoIx a where index :: a -> Integer unindex :: Integer -> a instance MemoIx Integer where index n | n >= 0 = n*2 | otherwise = -n*2-1 unindex n | n `mod` 2 == 0 = n `div` 2 | otherwise = -((n+1) `div` 2) instance (MemoIx a, MemoIx b) => MemoIx (a,b) where index (a,b) = l*(l+1) `div`2 + ib where ia = index a ib = index b l = ia+ib unindex ix = (unindex ia, unindex ib) where l = floor ((-1 + sqrt (1+8*fromIntegral ix))/2) ib = ix - l*(l+1) `div` 2 ia = l - ib data Tree a = Tree a (Tree a) (Tree a) findTree :: MemoIx a => Tree b -> a -> b findTree tree ix = f (bits $ index ix + 1) tree where bits = tail . reverse . map (`mod` 2) . takeWhile (>0) . iterate (`div` 2) f [] (Tree v _ _) = v f (0:bs) (Tree _ l _) = f bs l f (1:bs) (Tree _ _ r) = f bs r genTree :: MemoIx a => (a -> b) -> Tree b genTree f = gen 0 where gen i = Tree (f $ unindex i) (gen (i*2+1)) (gen (i*2+2)) memofix :: MemoIx a => ((a -> b) -> (a -> b)) -> (a -> b) memofix f = memof where memof = f $ findTree tbl tbl = genTree memof memo :: MemoIx a => (a -> b) -> a -> b memo f = findTree (genTree f) primes = it [2..10000] where it [] = [] it (x:xs) = (x:) $ it $ filter (\a -> a`mod`x /= 0) xs iswin = memo f where f x | x <= 3 = False | otherwise = not $ and $ map (iswin . (\p -> x-p)) $ takeWhile (<=x-2) primes answer n = if iswin n then "Win" else "Lose" main = do n <- readLn :: IO Integer putStrLn $ answer n