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"
	bidx = sb.index(m)
	aidx = sa.index(m)
	if (N == 0 and aidx != bidx) or (N == 1 and (aidx == bidx == 1 or abs(aidx-bidx)==2)):
		print "SUCCESS"
	else:
		print "FAILURE"