結果
| 問題 |
No.2 素因数ゲーム
|
| ユーザー |
|
| 提出日時 | 2015-03-08 21:16:27 |
| 言語 | Haskell (9.10.1) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 816 bytes |
| コンパイル時間 | 8,197 ms |
| コンパイル使用メモリ | 173,184 KB |
| 実行使用メモリ | 167,700 KB |
| 最終ジャッジ日時 | 2024-06-24 16:42:32 |
| 合計ジャッジ時間 | 19,232 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 19 TLE * 1 -- * 11 |
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:19:70: warning: [GHC-63394] [-Wx-partial]
In the use of ‘head’
(imported from Prelude, 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."
|
19 | go x = printf "%010d" $ (read :: String -> Int) $ showIntAtBase 2 (head . show) x ""
| ^^^^
Main.hs:23:90: 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."
|
23 | | otherwise = ((sum $ fmap (read . return . (!! 0)) ps) `mod` 2 == 0) && check (fmap tail ps)
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Control.Applicative
import Control.Monad
import Numeric
import Text.Printf
sieve = 2:3:[6*i+j|i<-[1..],j<-[-1,1], isPrime $ 6*i+j] where
isPrime n = null [p|p<-takeWhile (\x -> x*x <=n) sieve, rem n p == 0]
primeVector n = go n sieve [0] where
go 1 _ acc = reverse acc
go k (p:ps) (a:acc)
| k `mod` p == 0 = go (k `div` p) (p:ps) (a+1:acc)
| otherwise = go k ps (0:a:acc)
solve n = if solve' n then "Bob" else "Alice"
solve' n = check $ fmap go $ primeVector n where
go :: Int -> String
go x = printf "%010d" $ (read :: String -> Int) $ showIntAtBase 2 (head . show) x ""
check ps
| all (== "") ps = True
| otherwise = ((sum $ fmap (read . return . (!! 0)) ps) `mod` 2 == 0) && check (fmap tail ps)
main = do
n <- (read :: String -> Int) <$> getLine
putStrLn $ solve n