def abc(sa,sb,N):
    if N==0:    return sa==sb
    return  abc(sa,sb[1]+sb[0]+sb[2],N-1) or \
            abc(sa,sb[0]+sb[2]+sb[1],N-1)
sa=input()
N =int(input())
sb=input()
print(["SUCCESS","FAILURE"][abc(sa,sb,min(2,N))])