import java.util.Scanner

object Problem197 {

  def proc(before: String, n: Int, after: String): String = {
    val beforeCoins: Int = before.filter(_ == 'o').length
    val afterCoins: Int = after.filter(_ == 'o').length

    beforeCoins match {
      case _ if beforeCoins != afterCoins => "SUCCESS"
      case _ if n == 0 && before != after => "SUCCESS"
      case 3 => "FAILURE"
      case 2 => f(before.indexOf("x"), after.indexOf("x"), n)
      case 1 => f(before.indexOf("o"), after.indexOf("o"), n)
      case 0 => "FAILURE"
    }
  }

  def f(beforePlace: Int, afterPlace: Int, n: Int): String = {
    if (beforePlace + afterPlace == 2 && n == 1) "SUCCESS" else "FAILURE"
  }

  def main(args: Array[String]) {
    val sc = new Scanner(System.in)
    val before = sc.next()
    val n = sc.nextInt()
    val after = sc.next()

    val result = proc(before, n, after)
    println(result)
  }
}