結果
| 問題 |
No.816 Beautiful tuples
|
| コンテスト | |
| ユーザー |
torus711
|
| 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
torus711