#197magic
Sb=list(input())
N=int(input())
Sa=list(input())
ub=0
ua=0
pb=0
qb=0
pa=0
qa=0
for i in range(3):
    if Sb[i]=="o":
        Sb[i]=1
        ub+=1
        pb=i
    else:
        Sb[i]=0
        qb=i
    if Sa[i]=="o":
        Sa[i]=1
        ua+=1
        pa=i
    else:
        Sa[i]=0
        qa=i
if ub!=ua:
    print("SUCCESS")
else:
    if ub==0  or ub==3:
        print("FAILURE")
    else:
        if ub==2:
            pb=qb
            pa=qa
        d=pa-pb
        if d<0:
            d*=-1
        if d>N:
            print ("SUCCESS")
        else:
            if d%2==N%2:
                print ("FAILURE")
            else:
                print ("SUCCESS")