#!/usr/bin/python
# -*- coding: utf-8 -*-
# †
# (ΦωΦ)＜頼むぜ！

def f(s0, s1, c):
    if s0[0] == c and s1[2] == c:
        return 1
    if s0[2] == c and s1[0] == c:
        return 1
    if s0[1] == c and s1[1] == c:
        return 1
    return 0

def fushigi(s0, s1, n):
    s0o = s0.count('o')
    s1o = s1.count('o')
    if s0o != s1o:
        return 1 # コインの数が違ってたらふしぎ！
    if n == 0:
        return s0 != s1 # なんもしてないのに違ってたらふしぎ！
    if n == 1:
        if s0o == 1:
            if f(s0, s1, 'o'):
                return 1
        elif s0o == 2:
            if f(s0, s1, 'x'):
                return 1
    return 0

s0 = raw_input()
n = int(raw_input())
s1 = raw_input()
if fushigi(s0, s1, n):
    print 'SUCCESS'
else:
    print 'FAILURE'