Sb = input()
N = int(input())
Sa = input()

if Sb.count('o') != Sa.count('o'):
    x = 1
else:
    if N == 0:
        x = [0, 1][Sa != Sb]
    elif N > 1:
        x = 0
    else:
        x = [0, 1][Sa != Sb[1]+Sb[0]+Sb[2] and Sa != Sb[0]+Sb[2]+Sb[1]]

print(['FAILURE', 'SUCCESS'][x])