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| 13 | |
| 45 | |
| 120 | |
| 120 | |
| 120 | |
| 120 | |
| 120 | |
| 120 | |
| 60 | |
| 45 | |
| 120 | |
| 60 | |
| 60 | |
| 60 |
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| Monday (225) [10; 5; 0] | |
| Tuesday (240) [6; 1] | |
| Wednesday (240) [12; 7; 2] | |
| Thursday (225) [11; 8; 3] | |
| Friday (240) [9; 4] |
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| open System | |
| type Day = | |
| | Monday | |
| | Tuesday | |
| | Wednesday | |
| | Thursday | |
| | Friday | |
| type Lecture = { | |
| id: int | |
| difficulty: uint32 | |
| } | |
| type State = Map<Day, uint32 * int list> | |
| let plan (lectures: Lecture seq) = | |
| let initialState: State = Map.ofList [ | |
| (Monday, (0u, [])) | |
| (Tuesday, (0u, [])) | |
| (Wednesday, (0u, [])) | |
| (Thursday, (0u, [])) | |
| (Friday, (0u, [])) | |
| ] | |
| let folder (prevState: State) ({ id = id; difficulty = difficulty }: Lecture): State = | |
| let day = | |
| prevState | |
| |> Map.toList | |
| |> List.sortBy (fun (_, (lectures, _)) -> lectures) | |
| |> List.map (fun (day, _) -> day) | |
| |> List.head | |
| prevState | |
| |> Map.change day (fun from -> | |
| let (sum, lectures) = Option.get from | |
| Some((sum + difficulty, id :: lectures))) | |
| lectures | |
| |> Seq.fold folder initialState | |
| let () = | |
| let numLectures = Console.ReadLine() |> Int32.Parse | |
| let lectures = | |
| Array.zeroCreate numLectures | |
| |> Array.map (Console.ReadLine >> UInt32.Parse) | |
| |> Seq.mapi (fun i v -> { id = i; difficulty = v }) | |
| plan lectures | |
| |> Map.iter (fun day (sum, lectures) -> printfn "%-9s (%d) %A" (string day) sum lectures) |
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