let sBefore = stdin.ReadLine ()
let n = stdin.ReadLine () |> int
let sAfter = stdin.ReadLine ()

let stateArray =
    [|
        "xxx"
        "xxo"
        "xox"
        "xoo"
        "oxx"
        "oxo"
        "oox"
        "ooo"
    |]
   
 
let rec next (arr: bool array) count =
    if count = 0 then
        arr
    else
        let a = Array.replicate 8 false
        for i in 0..arr.Length-1 do
            if arr.[i] then
                let index1, index2 =
                    match i with
                    | 0 -> 0, 0
                    | 1 -> 1, 2
                    | 2 -> 4, 1
                    | 3 -> 5, 3
                    | 4 -> 2, 4
                    | 5 -> 3, 6
                    | 6 -> 6, 5
                    | _ -> 7, 7
                a.[index1] <- true
                a.[index2] <- true
                
        next a (count-1)
        
let firstState = Array.replicate 8 false
firstState.[Array.findIndex ((=)sBefore) stateArray] <- true
if n >= 2 then
    printfn "FAILURE"
else
    next firstState n |> Array.get <| (Array.findIndex ((=)sAfter) stateArray) |> (fun x -> printfn "%s" (if x then "FAILURE" else "SUCCESS"))