結果
| 問題 | No.136 Yet Another GCD Problem |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2015-04-21 19:46:38 |
| 言語 | Haskell (9.14.1) |
| 結果 |
AC
|
| 実行時間 | 11 ms / 5,000 ms |
| コード長 | 354 bytes |
| 記録 | |
| コンパイル時間 | 1,098 ms |
| コンパイル使用メモリ | 196,224 KB |
| 実行使用メモリ | 10,112 KB |
| 最終ジャッジ日時 | 2026-03-26 02:19:27 |
| 合計ジャッジ時間 | 2,319 ms |
|
ジャッジサーバーID (参考情報) |
judge3_0 / judge1_0 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 39 |
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:2:43: 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"."
|
2 | main = getLine >>= print . solve . read . head . words
| ^^^^
Main.hs:6:1: warning: [GHC-94817] [-Wtabs]
Tab character found here, and in 7 further locations.
Suggested fix: Please use spaces instead.
|
6 | where
| ^^^^^^^^
[2 of 2] Linking a.out
ソースコード
main = getLine >>= print . solve . read . head . words solve :: Int -> Int solve n = div n $ foldl (\acc x -> if acc == n && mod n x == 0 then x else acc) n primes where primes = primes' [2..n] (sqrt $ fromIntegral n) primes' [] _ = [] primes' (x : xs) mb | fromIntegral x < mb = x : primes' [y | y <- xs, mod y x /= 0] mb | otherwise = x : xs