結果
| 問題 |
No.1109 調の判定
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-07-22 20:24:04 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 548 bytes |
| コンパイル時間 | 4,853 ms |
| コンパイル使用メモリ | 173,824 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-22 04:23:08 |
| 合計ジャッジ時間 | 6,078 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 | AC * 3 |
| other | AC * 43 |
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:16:14: warning: [GHC-63394] [-Wx-partial]
In the use of ‘head’
(imported from Data.List, 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."
|
16 | | check (head t) p = calc (tail t) p
| ^^^^
Main.hs:16:32: warning: [GHC-63394] [-Wx-partial]
In the use of ‘tail’
(imported from Data.List, 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."
|
16 | | check (head t) p = calc (tail t) p
| ^^^^
Main.hs:24:37: warning: [GHC-63394] [-Wx-partial]
In the use of ‘head’
(imported from Data.List, 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."
|
24 | print $ if length ans == 1 then head ans else -1
| ^^^^
[2 of 2] Linking a.out
ソースコード
{-# LANGUAGE ScopedTypeVariables #-}
module Main where
import Data.List
import Control.Monad
readLine :: Read a => IO [a]
readLine = map read . words <$> getLine
check :: Int -> Int -> Bool
check s p = elem s $ map ((`mod` 12) . (+p)) [0,2,4,5,7,9,11]
calc :: [Int] -> Int -> Bool
calc t p
| p == -1 = False
| null t = True
| check (head t) p = calc (tail t) p
| otherwise = False
main :: IO ()
main = do
getLine
t <- readLine
let ans = [p | p<-[0..11], calc t p]
print $ if length ans == 1 then head ans else -1