結果
問題 |
No.420 mod2漸化式
|
ユーザー |
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提出日時 | 2016-12-27 13:06:05 |
言語 | Haskell (9.10.1) |
結果 |
TLE
|
実行時間 | - |
コード長 | 524 bytes |
コンパイル時間 | 14,961 ms |
コンパイル使用メモリ | 170,496 KB |
実行使用メモリ | 400,384 KB |
最終ジャッジ日時 | 2024-12-15 02:03:44 |
合計ジャッジ時間 | 90,606 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | TLE * 1 |
other | TLE * 35 |
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:21:22: 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." | 21 | putStrLn $ show (head ans) ++ " " ++ show (last ans) | ^^^^ [2 of 2] Linking a.out
ソースコード
getHalf :: [Int] -> [Int] getHalf l = drop (length l `div` 2) l makeList :: Int -> [Int] makeList 0 = [1] makeList x = makeList2 (makeList (pred x)) makeList2 :: [Int] -> [Int] makeList2 l | length l == 1 = l ++ [succ (last l)] | otherwise = l ++ makeList2 (getHalf l) solve :: Int -> [Int] solve x = [length l, sum l] where l = filter (== x) (foldr (++) [] (map makeList [0..30])) main :: IO () main = do x <- readLn let ans = solve x putStrLn $ show (head ans) ++ " " ++ show (last ans)