結果
問題 | No.105 arcの六角ボルト |
ユーザー | aimy |
提出日時 | 2017-04-25 17:02:20 |
言語 | Haskell (9.8.2) |
結果 |
AC
|
実行時間 | 170 ms / 5,000 ms |
コード長 | 329 bytes |
コンパイル時間 | 2,036 ms |
コンパイル使用メモリ | 173,696 KB |
実行使用メモリ | 8,448 KB |
最終ジャッジ日時 | 2024-09-13 08:50:56 |
合計ジャッジ時間 | 2,983 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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:3:66: 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." | 3 | main = interact $ unlines . map (printf "%.9f" . bolt) . read' . tail . lines | ^^^^ Main.hs:7:33: 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." | 7 | where (xys,xs') = splitAt 6 (tail xs) | ^^^^ Main.hs:10:8: 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." | 10 | bolt = head . filter (\d -> -1 < d && d < 51) . map (\[x,y] -> atan (y/x) * (180/pi)) | ^^^^ [2 of 2] Linking a.out
ソースコード
import Text.Printf main = interact $ unlines . map (printf "%.9f" . bolt) . read' . tail . lines where read' [] = [] read' xs = map (map read . words) xys : read' xs' where (xys,xs') = splitAt 6 (tail xs) bolt :: [[Double]] -> Double bolt = head . filter (\d -> -1 < d && d < 51) . map (\[x,y] -> atan (y/x) * (180/pi))