def main():
    sb, n, sa = input(), int(input()), input()

    if sb.count("o") != sa.count("o"):
        print("SUCCESS")
    if sb.count("o") == 3 or sa.count("x") == 3:
        print("FAILURE")
    elif n > 1:
        print("FAILURE")
    elif n == 0:
        if sb == sa:
            print("FAILURE")
        else:
            print("SUCCESS")
    else:
        if sb.count("o") == 1:
            if sb[1] == "o" and sa[1] == "o":
                print("SUCCESS")
            elif abs(sb.index("o")-sa.index("o")) == 2:
                print("SUCCESS")
            else:
                print("FAILURE")
        else:
            if sb[1] == "x" and sa[1] == "x":
                print("SUCCESS")
            elif abs(sb.index("x")-sa.index("x")) == 2:
                print("SUCCESS")
            else:
                print("FAILURE")

if __name__ == '__main__':
    main()