結果
| 問題 | No.1169 Row and Column and Diagonal |
| コンテスト | |
| ユーザー |
poapoa
|
| 提出日時 | 2020-08-15 01:10:12 |
| 言語 | Haskell (9.12.2) |
| 結果 |
AC
|
| 実行時間 | 34 ms / 2,000 ms |
| コード長 | 517 bytes |
| 記録 | |
| コンパイル時間 | 4,618 ms |
| コンパイル使用メモリ | 180,888 KB |
| 実行使用メモリ | 10,112 KB |
| 最終ジャッジ日時 | 2024-10-10 16:59:33 |
| 合計ジャッジ時間 | 5,852 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 13 |
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:20:12: warning: [GHC-63394] [-Wx-partial]
In the use of ‘tail’
(imported from Prelude, but defined in GHC.List):
"This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
|
20 | shift xs = tail xs ++ [head xs]
| ^^^^
Main.hs:20:24: warning: [GHC-63394] [-Wx-partial]
In the use of ‘head’
(imported from Prelude, 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."
|
20 | shift xs = tail xs ++ [head xs]
| ^^^^
[2 of 2] Linking a.out
ソースコード
{-# LANGUAGE OverloadedStrings #-}
import qualified Control.Monad as M
import qualified Data.ByteString.Char8 as B
main :: IO ()
main = do
n <- readLn :: IO Int
let m = (n `div` 2) + 1
let xs = merge [1..m] [m+1..n]
let ys = iterate shift xs
B.putStr . B.unlines . map (B.pack . unwords . map show) . take n $ ys
merge :: [Int] -> [Int] -> [Int]
merge xs [] = xs
merge [] ys = ys
merge (x:xs) (y:ys) = x : y : merge xs ys
shift :: [Int] -> [Int]
shift xs = tail xs ++ [head xs]
poapoa