結果

問題 No.105 arcの六角ボルト
ユーザー aimyaimy
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
このコードへのチャレンジ
(要ログイン)

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 170 ms
8,448 KB
権限があれば一括ダウンロードができます
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

diff #

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))
0