S_b = [c for c in input()]
N = int(input())
S_a = [c for c in input()]
if N == 0:
    if S_b != S_a:
        print('SUCCESS')
    else:
        print('FAILURE')
elif N == 1:
    if abs(S_b.index('o') - S_a.index('o')) != 1:
        print('SUCCESS')
    else:
        print('FAILURE')
else:
    if (N - abs(S_b.index('o') - S_a('o'))) % 2 == 1:
        print('SUCCESS')
    else:
        print('FAILURE')