sb = raw_input()
N = input()
sa = raw_input()
bc = sb.count("o")
ac = sa.count("o")
if bc != ac:
	print "SUCCESS"
elif bc == 0 or bc == 3:
	print "FAILURE"
else:
	m = "o" if bc == 1 else "x"
	b = sb.index(m)
	a = sa.index(m)
	if N < 2:
		print "FAILURE" if N == abs(a-b) else "SUCCESS"
	else:
		print "FAILURE" if abs(a-b)&1 == N&1 else "SUCCESS"