# coding:utf-8
from collections import Counter as cc

S_before = input()
N = int(input())
S_after = input()
ans = "FAILURE"

if cc(S_before) != cc(S_after):
    ans = "SUCCESS"

elif S_before == S_after and N == 1 and S_after[0] == S_after[2] and S_after[0] != S_after[1]:
    ans = "SUCCESS"
elif S_before == S_after:
    pass
elif N == 0:
    if S_before != S_after:
        ans = "SUCCESS"
elif N == 1:
    if S_before[1] == S_after[1]:
        ans = "SUCCESS"

print(ans)