00:difficulty: easy
01:difficulty: easy
02:difficulty: intermediate
03:difficulty: intermediate
04:difficulty: intermediate
05:difficulty: intermediate
06:difficulty: medium
07:difficulty: medium
08:difficulty: medium
09:difficulty: medium
0A:difficulty: medium
0B:difficulty: medium
0C:difficulty: medium
0D:difficulty: medium
0E:difficulty: medium
0F:difficulty: medium
10:difficulty: medium
11:difficulty: medium
12:difficulty: medium
13:difficulty: medium
14:difficulty: medium
15:difficulty: medium
16:difficulty: medium
17:difficulty: medium
18:difficulty: medium
19:difficulty: medium
1A:difficulty: medium
1B:difficulty: medium
1C:difficulty: medium
1D:difficulty: medium
1E:difficulty: medium
1F:difficulty: medium
20:difficulty: medium
21:difficulty: medium
22:difficulty: medium
23:difficulty: medium
24:difficulty: medium
25:difficulty: hard
26:difficulty: hard
27:difficulty: hard
28:difficulty: hard
29:difficulty: hard
2A:difficulty: hard
2B:difficulty: hard
2C:difficulty: hard
2D:difficulty: hard
2E:difficulty: hard
2F:difficulty: hard
30:difficulty: hard
31:difficulty: hard
32:difficulty: hard
33:difficulty: hard
34:difficulty: hard
35:difficulty: hard
36:difficulty: hard
37:difficulty: hard
38:difficulty: hard
39:difficulty: hard
3A:difficulty: hard
3B:difficulty: hard
3C:difficulty: hard
3D:difficulty: hard
3E:difficulty: hard
3F:difficulty: hard
40:difficulty: hard
41:difficulty: hard
42:difficulty: hard
43:difficulty: hard
44:difficulty: hard
45:difficulty: hard
46:difficulty: hard
47:difficulty: hard
48:difficulty: hard
49:difficulty: hard
4A:difficulty: hard
4B:difficulty: hard
4C:difficulty: hard
4D:difficulty: hard
4E:difficulty: hard
4F:difficulty: hard
50:difficulty: hard
51:difficulty: hard
52:difficulty: hard
53:difficulty: hard
54:difficulty: hard
55:difficulty: hard
56:difficulty: hard
57:difficulty: hard
58:difficulty: hard
59:difficulty: hard
5A:difficulty: hard
5B:difficulty: hard
5C:difficulty: hard
5D:difficulty: hard
5E:difficulty: hard
5F:difficulty: hard
60:difficulty: hard
61:difficulty: hard
62:difficulty: hard
63:difficulty: hard
64:difficulty: hard
65:difficulty: hard
66:difficulty: hard
67:difficulty: hard
68:difficulty: hard
69:difficulty: hard
6A:difficulty: hard
6B:difficulty: hard
6C:difficulty: hard
6D:difficulty: hard
6E:difficulty: hard
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70:difficulty: hard
71:difficulty: hard
72:difficulty: hard
73:difficulty: challenging
74:difficulty: challenging
75:difficulty: challenging
76:difficulty: challenging
77:difficulty: challenging
78:difficulty: challenging
79:difficulty: challenging
7A:difficulty: challenging
7B:difficulty: challenging