bef = list(raw_input())
N = input()
aft = list(raw_input())

if bef.count('x') != aft.count('x'):
    print 'SUCCESS'
    exit()

if N == 0:
    possible = [bef]
elif N == 1:
    possible = [[bef[1], bef[0], bef[2]], [bef[0], bef[2], bef[1] ]]
elif N == 2:
    possible = [[bef[0], bef[1], bef[2]], [bef[1], bef[2], bef[0]], [bef[2], bef[0], bef[1]]]
else:
    print 'FAILURE'
    exit()

if aft in possible:
    print 'FAILURE'
else:
    print 'SUCCESS'