結果
| 問題 |
No.634 硬貨の枚数1
|
| コンテスト | |
| ユーザー |
kuwa
|
| 提出日時 | 2018-01-20 00:41:57 |
| 言語 | Haskell (9.10.1) |
| 結果 |
CE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 1,313 bytes |
| コンパイル時間 | 710 ms |
| コンパイル使用メモリ | 159,616 KB |
| 最終ジャッジ日時 | 2024-11-14 20:19:16 |
| 合計ジャッジ時間 | 1,579 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。(リジャッジ後のコンパイルエラーは公開されます)
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
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:37:8: error: [GHC-82311]
Empty 'do' block
Suggested fix: Perhaps you intended to use NondecreasingIndentation
|
37 | else do
| ^^
Main.hs:53:24: error: [GHC-87543]
Ambiguous occurrence ‘BC.getLine’.
It could refer to
either ‘BC.getLine’,
imported qualified from ‘Data.ByteString’ at Main.hs:8:1-38,
or ‘BC.getLine’,
imported qualified from ‘Data.ByteString.Char8’ at Main.hs:7:1-44.
|
53 | readInt = parseInt <$> BC.getLine
| ^^^^^^^^^^
Main.hs:56:26: error: [GHC-87543]
Ambiguous occurrence ‘BC.getLine’.
It could refer to
either ‘BC.getLine’,
imported qualified from ‘Data.ByteString’ at Main.hs:8:1-38,
or ‘BC.getLine’,
imported qualified from ‘Data.ByteString.Char8’ at Main.hs:7:1-44.
|
56 | readInts = parseInts <$> BC.getLine
| ^^^^^^^^^^
ソースコード
module Main where
import Control.Monad
import Control.Applicative
import Data.Maybe
import Data.List
import qualified Text.Printf
import qualified Data.ByteString.Char8 as BC
import qualified Data.ByteString as BC
import Debug.Trace
------------------------------------------
calc :: Int -> Int
calc x = f 0 5000
where
f l r
| l+1 >= r = l
| otherwise =
let m = (l+r) `div` 2 in
if m*(m+1)`div`2 <= x then f m r else f l m
calc2 :: Int -> Maybe Int
calc2 n =
let xs = filter (== n) $ do
a <- takeWhile (< n) $ map (\x -> x*(x+1)`div`2) [0..]
let b = calc (n-a)
return $ a + b*(b+1)`div`2
in case xs of
[] -> Nothing
(x:_) -> Just x
main :: IO ()
main = do
n <- readInt
if n == (let x = calc n in x*(x+1)`div`2) then print 1
else do
print $ case calc2 n of
Nothing -> 3
Just _ -> 2
------------------------------------------
{- Int input -}
parseInt :: BC.ByteString -> Int
parseInt = fst . fromJust . BC.readInt
parseInts :: BC.ByteString -> [Int]
parseInts = map parseInt <$> BC.words
readInt :: IO Int
readInt = parseInt <$> BC.getLine
readInts :: IO [Int]
readInts = parseInts <$> BC.getLine
{- Double Formatting -}
doubleFmt :: Double -> String
doubleFmt = Text.Printf.printf "%.12f"
kuwa