S_before=input()
N=int(input())
S_after=input()

coin_before=S_before.count('o')
coin_after=S_after.count('o')

#コインの数が違う
if coin_after!=coin_before:
    print("SUCCESS")
    exit()

#コインが0または3つ
if coin_before==0 or coin_before==3:
    print("FAILURE")
    exit()

#コインが1つまたは2つ
if N<1:
    if S_before!=S_after:
        print("SUCCESS")
    else:
        print("FAILURE")
    exit()
elif N==1:
    if (S_before[0]=='o' and S_after[2]=='o') or \
       (S_before[2]=='o' and S_after[0]=='o' ):
       print("SUCCESS")
    else:
       print("FAILURE")
    exit()
else:
    print("FAILURE")
    exit()