結果
| 問題 | No.105 arcの六角ボルト |
| コンテスト | |
| ユーザー |
aimy
|
| 提出日時 | 2017-04-25 17:02:20 |
| 言語 | Haskell (9.14.1) |
| 結果 |
AC
|
| 実行時間 | 112 ms / 5,000 ms |
| コード長 | 329 bytes |
| 記録 | |
| コンパイル時間 | 4,770 ms |
| コンパイル使用メモリ | 197,632 KB |
| 実行使用メモリ | 10,624 KB |
| 最終ジャッジ日時 | 2026-04-04 04:20:10 |
| 合計ジャッジ時間 | 4,071 ms |
|
ジャッジサーバーID (参考情報) |
judge3_1 / judge1_0 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 1 |
コンパイルメッセージ
Loaded package environment from /home/judge/.ghc/x86_64-linux-9.14.1/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.Internal.List):
"This is a partial function, it throws an error on empty lists. Replace it with 'drop' 1, or use pattern matching or 'GHC.Internal.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.Internal.List):
"This is a partial function, it throws an error on empty lists. Replace it with 'drop' 1, or use pattern matching or 'GHC.Internal.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.Internal.List):
"This is a partial function, it throws an error on empty lists. Use pattern matching, 'Data.List.uncons' or 'Data.Maybe.listToMaybe' 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))
aimy