b = input()
n = int(input())
a = input()

if a.count("x") != b.count("x"): # impossible
    print("SUCCESS")
    exit()

if a.count("x") == 0 or a.count("x")==3: # xxx,ooo
    print("FAILURE")
    exit()

if a=="oxo" or a=="xox":
    if n==1:
        print("SUCCESS")
    else:
        print("FAILURE")

else: # oox, xxo, xoo, oxx
    if n<=1:
        print("SUCCESS")
    else:
        print("FAILURE")