def chk(sa,sb,N):
    if sa==sb and N!=1:                 return 1
    if sa==sb and sa[0]!=sa[1] and sa[1]!=sa[2]: return 0
    if sa.count('o')!=sb.count('o'):    return 0
    if sa[1]==sb[1] and N<2:            return 0
    return 1
sa=input()
N = int(input())
sb=input()
print(["SUCCESS","FAILURE"][chk(sa,sb,N)])