[<AutoOpen>]
module Program

open System

let read f = stdin.ReadLine() |> f
let reada f = stdin.ReadLine().Split() |> Array.map f
let reads f = stdin.ReadLine().Split() |> Array.toList |> List.map f

[<EntryPoint>]
let main _ =
    let s = read string
    match s with
    | "Sunny" -> "Cloudy"
    | "Cloudy" -> "Rainy"
    | "Rainy" -> "Sunny"
    |> printfn "%s"
    0