結果
問題 | No.49 算数の宿題 |
ユーザー |
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提出日時 | 2017-04-21 21:16:44 |
言語 | Haskell (9.10.1) |
結果 |
AC
|
実行時間 | 2 ms / 5,000 ms |
コード長 | 252 bytes |
コンパイル時間 | 2,639 ms |
コンパイル使用メモリ | 176,384 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-12-23 01:56:48 |
合計ジャッジ時間 | 3,251 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 10 |
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:4:35: 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." | 4 | parse acc ('+':cs) = let (n,xs) = head (reads cs) in parse (acc*n) xs | ^^^^ Main.hs:5:35: 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." | 5 | parse acc ('*':cs) = let (n,xs) = head (reads cs) in parse (acc+n) xs | ^^^^ Main.hs:6:29: 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." | 6 | parse acc cs = let (n,xs) = head (reads cs) in parse n xs | ^^^^ [2 of 2] Linking a.out
ソースコード
main = getLine >>= print . parse 0 parse acc [] = acc parse acc ('+':cs) = let (n,xs) = head (reads cs) in parse (acc*n) xs parse acc ('*':cs) = let (n,xs) = head (reads cs) in parse (acc+n) xs parse acc cs = let (n,xs) = head (reads cs) in parse n xs