結果
| 問題 | No.280 歯車の問題(1) |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2015-09-29 19:43:48 |
| 言語 | Haskell (9.14.1) |
| 結果 |
MLE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 460 bytes |
| 記録 | |
| コンパイル時間 | 8,773 ms |
| コンパイル使用メモリ | 197,464 KB |
| 実行使用メモリ | 205,436 KB |
| 最終ジャッジ日時 | 2026-04-02 17:43:33 |
| 合計ジャッジ時間 | 12,584 ms |
|
ジャッジサーバーID (参考情報) |
judge2_1 / judge5_1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 30 MLE * 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:5:22: 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"."
|
5 | solve xs = last xs % head xs
| ^^^^
[2 of 2] Linking a.out
ソースコード
module Main where
import Data.Ratio
solve :: [Integer] -> Rational
solve xs = last xs % head xs
formatRatio :: String -> String
formatRatio [] = []
formatRatio ('%':xs) = '/':formatRatio xs
formatRatio (x:xs) = x:formatRatio xs
main :: IO()
main = do
n <- fmap read getLine :: IO (Int)
zs <- fmap words getLine :: IO [String]
let zs' = fmap read zs :: [Integer]
let res = show $ solve zs'
putStrLn $ formatRatio res