open System
open System.Collections.Generic

[<AutoOpen>]
module Cin =
    let read f = stdin.ReadLine() |> f
    let reada f = stdin.ReadLine().Split() |> Array.map f
    let readChars() = read string |> Seq.toArray
    let readInts() = readChars() |> Array.map (fun x -> Convert.ToInt32(x.ToString()))

[<AutoOpen>]
module Cout =
    let writer = new IO.StreamWriter(new IO.BufferedStream(Console.OpenStandardOutput()))
    let print (s: string) = writer.Write s
    let println (s: string) = writer.WriteLine s
    let inline puts (s: ^a) = string s |> println

let main() =
    let b = read string
    let n = read int64
    let a = read string
    let yes = "SUCCESS"
    let no = "FAILURE"

    let bo =
        b
        |> Seq.filter (fun c -> c = 'o')
        |> Seq.length

    let ao =
        a
        |> Seq.filter (fun c -> c = 'o')
        |> Seq.length

    if b = "ooo" then
        if a = "ooo" then no else yes
    elif b = "xxx" then
        if a = "xxx" then no else yes
    else
        match n with
        | 0L ->
            if b = a then no else yes
        | 1L ->
            match bo = ao with
            | true ->
                if b.[..1] = a.[1..] then yes else no
            | _ -> yes
        | _ ->
            if bo = ao then no else yes
    |> puts


    ()

main()
writer.Close()
writer.Close()