結果
問題 | No.816 Beautiful tuples |
ユーザー |
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提出日時 | 2019-06-22 15:13:08 |
言語 | Haskell (9.10.1) |
結果 |
AC
|
実行時間 | 18 ms / 1,500 ms |
コード長 | 1,017 bytes |
コンパイル時間 | 2,130 ms |
コンパイル使用メモリ | 180,304 KB |
実行使用メモリ | 13,952 KB |
最終ジャッジ日時 | 2024-12-26 09:03:34 |
合計ジャッジ時間 | 2,882 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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ファイルパターン | 結果 |
---|---|
other | AC * 15 |
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:33:1: warning: [GHC-94817] [-Wtabs] Tab character found here, and in 12 further locations. Suggested fix: Please use spaces instead. | 33 | [ a, b ] <- readInts | ^^^^^^^^ Main.hs:40:22: 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." | 40 | else head res | ^^^^ [2 of 2] Linking a.out
ソースコード
{-# LANGUAGE BangPatterns #-} {-# LANGUAGE BinaryLiterals #-} {-# LANGUAGE MultiWayIf #-} {-# LANGUAGE NumDecimals #-} {-# LANGUAGE ScopedTypeVariables #-} {-# LANGUAGE TupleSections #-} import Control.Applicative import Control.Arrow import Control.Monad import Control.Monad.ST import Data.Char import Data.List import Data.Maybe import qualified Data.ByteString.Char8 as B import Data.Array.ST.Safe import Data.STRef import Debug.Trace import Text.Printf readInt = readLn :: IO Int readInts = map ( fst . fromJust . B.readInt ) . B.words <$> B.getLine readNInts = readInt >>= flip replicateM readInt which a b f = if f then a else b mp [ a, b ] = ( a, b ) main = do [ a, b ] <- readInts let divs1 = takeWhile ( \i -> i * i <= a + b ) [ 1 .. ] divs2 = map ( \i -> ( a + b ) `div` i ) divs1 res = filter ( f a b ) $ sort $ divs1 ++ divs2 print $ if null res then -1 else head res f a b c = ( a + b ) `mod` c == 0 && ( a + c ) `mod` b == 0 && ( b + c ) `mod` a == 0 && a /= b && a /= c && b /= c