import sys

def solve():
    sb = input()
    n = int(input())
    sa = input()

    f = 'FAILURE'
    s = 'SUCCESS'

    if sb == 'ooo':
        if sa == 'ooo':
            ans = f
        else:
            ans = s
    elif sb == 'xxx':
        if sa == 'xxx':
            ans = f
        else:
            ans = s
    elif sb.count('o') == 1:
        if sa.count('o') != 1:
            ans = s
        else:
            ib = sb.index('o')
            ia = sa.index('o')

            if (ia - ib) % 2 == n % 2:
                ans = f
            else:
                ans = s
    else:
        if sb.count('x') != 1:
            ans = s
        else:
            ib = sb.index('x')
            ia = sa.index('x')

            if (ia - ib) % 2 == n % 2:
                ans = f
            else:
                ans = s

    print(ans)


if __name__ == '__main__':
    solve()