s = str(input())
n = int(input())
t = str(input())

if s.count('o') != t.count('o'):
    print('SUCCESS')
    exit()

if n == 0:
    if s != t:
        print('SUCCESS')
    else:
        print('FAILURE')
elif n == 1:
    L = []
    for i in range(3):
        if s[i] != t[i]:
            L.append(i)
    if L[1]-L[0] == 1:
        print('FAILURE')
    else:
        print('SUCCESS')
else:
    print('FAILURE')