# coding:utf-8
from collections import Counter as cc
S_before = input()
N = int(input())
S_after = input()

if cc(S_before) != cc(S_after):
    ans = "SUCCESS"
elif N == 0:
    if S_before != S_after:
        ans = "SUCCESS"
elif N == 1:
    if S_before[1] == S_after[1]:
        ans = "SUCCESS"
    if S_before == S_after:
        ans = "SUCCESS"
elif N >= 2:
    ans = "FAILURE"

print(ans)