sa=input()
n=int(input())
sb=input()
ca,cb=0,0
for i in range(3):
	if sa[i]=='o':ca+=1
	if sb[i]=='o':cb+=1
if ca!=cb:
	print("FAILURE")
else:
	if n>=2:
		print("FAILURE")
	elif n==0:
		if sa==sb:print("SUCCESS")
		else:	print("FAILURE")
	else:
		if sa[0]==sb[1] and sa[1]==sb[0] and sa[2]==sb[2] or sa[0]==sb[0] and sa[1]==sb[2] and sa[2]==sb[1]:
			print("FAILURE")
		else:print("SUCCESS")