#coding: utf-8
##yuki_197


sb=raw_input()
n=int(raw_input())
sa=raw_input()

if sb.count('o')!=sa.count('o'):
 res=False
elif n>=2:
 res=True
elif n==0:
 if sb==sa:
  res=True
 else:
  res=False
elif n==1:
 if sb=="oxx" and sa=="xxo":
  res=False
 elif sb=="xxo" and sa=="oxx":
  res=False
 elif sb=="oox" and sa=="xoo":
  res=False
 elif sb=="xoo" and sa=="oox":
  res=False
 elif sb=="oxo" and sa=="oxo":
  res=False
 elif sb=="xox" and sa=="xox":
  res=False
 else:
  res=True
if res==True:
 print "FAILURE"
else:
 print "SUCCESS"