Implementation
static const List<int> FLIP_TABLE = [
0,
-128,
64,
-64,
32,
-96,
96,
-32,
16,
-112,
80,
-48,
48,
-80,
112,
-16,
8,
-120,
72,
-56,
40,
-88,
104,
-24,
24,
-104,
88,
-40,
56,
-72,
120,
-8,
4,
-124,
68,
-60,
36,
-92,
100,
-28,
20,
-108,
84,
-44,
52,
-76,
116,
-12,
12,
-116,
76,
-52,
44,
-84,
108,
-20,
28,
-100,
92,
-36,
60,
-68,
124,
-4,
2,
-126,
66,
-62,
34,
-94,
98,
-30,
18,
-110,
82,
-46,
50,
-78,
114,
-14,
10,
-118,
74,
-54,
42,
-86,
106,
-22,
26,
-102,
90,
-38,
58,
-70,
122,
-6,
6,
-122,
70,
-58,
38,
-90,
102,
-26,
22,
-106,
86,
-42,
54,
-74,
118,
-10,
14,
-114,
78,
-50,
46,
-82,
110,
-18,
30,
-98,
94,
-34,
62,
-66,
126,
-2,
1,
-127,
65,
-63,
33,
-95,
97,
-31,
17,
-111,
81,
-47,
49,
-79,
113,
-15,
9,
-119,
73,
-55,
41,
-87,
105,
-23,
25,
-103,
89,
-39,
57,
-71,
121,
-7,
5,
-123,
69,
-59,
37,
-91,
101,
-27,
21,
-107,
85,
-43,
53,
-75,
117,
-11,
13,
-115,
77,
-51,
45,
-83,
109,
-19,
29,
-99,
93,
-35,
61,
-67,
125,
-3,
3,
-125,
67,
-61,
35,
-93,
99,
-29,
19,
-109,
83,
-45,
51,
-77,
115,
-13,
11,
-117,
75,
-53,
43,
-85,
107,
-21,
27,
-101,
91,
-37,
59,
-69,
123,
-5,
7,
-121,
71,
-57,
39,
-89,
103,
-25,
23,
-105,
87,
-41,
55,
-73,
119,
-9,
15,
-113,
79,
-49,
47,
-81,
111,
-17,
31,
-97,
95,
-33,
63,
-65,
127,
-1
];
