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