00:difficulty: easy
01:difficulty: easy
02:difficulty: easy
03:difficulty: easy
04:difficulty: easy
05:difficulty: easy
06:difficulty: easy
07:difficulty: easy
08:difficulty: easy
09:difficulty: easy
0A:difficulty: easy
0B:difficulty: easy
0C:difficulty: easy
0D:difficulty: easy
0E:difficulty: easy
0F:difficulty: easy
10:difficulty: easy
11:difficulty: easy
12:difficulty: easy
13:difficulty: easy
14:difficulty: intermediate
15:difficulty: intermediate
16:difficulty: intermediate
17:difficulty: intermediate
18:difficulty: intermediate
19:difficulty: intermediate
1A:difficulty: intermediate
1B:difficulty: intermediate
1C:difficulty: intermediate
1D:difficulty: intermediate
1E:difficulty: intermediate
1F:difficulty: intermediate
20:difficulty: intermediate
21:difficulty: intermediate
22:difficulty: intermediate
23:difficulty: intermediate
24:difficulty: intermediate
25:difficulty: intermediate
26:difficulty: intermediate
27:difficulty: intermediate
28:difficulty: intermediate
29:difficulty: intermediate
2A:difficulty: intermediate
2B:difficulty: intermediate
2C:difficulty: intermediate
2D:difficulty: intermediate
2E:difficulty: intermediate
2F:difficulty: intermediate
30:difficulty: intermediate
31:difficulty: intermediate
32:difficulty: medium
33:difficulty: medium
34:difficulty: medium
35:difficulty: medium
36:difficulty: medium
37:difficulty: medium
38:difficulty: medium
39:difficulty: medium
3A:difficulty: medium
3B:difficulty: medium
3C:difficulty: medium
3D:difficulty: medium
3E:difficulty: medium
3F:difficulty: medium
40:difficulty: medium
41:difficulty: medium
42:difficulty: medium
43:difficulty: medium
44:difficulty: medium
45:difficulty: medium
46:difficulty: medium
47:difficulty: medium
48:difficulty: medium
49:difficulty: medium
4A:difficulty: medium
4B:difficulty: medium
4C:difficulty: medium
4D:difficulty: medium
4E:difficulty: medium
4F:difficulty: medium
50:difficulty: hard
51:difficulty: hard
52:difficulty: hard
53:difficulty: hard
54:difficulty: hard
55:difficulty: hard
56:difficulty: hard
57:difficulty: challenging
58:difficulty: challenging