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