Ladder Name: 21 - Codeforces Rating >= 2200

Description: For experienced users or users with Codeforces Rating >= 2200.

Difficulty Level: 6

ID	Problem Name	Online Judge	Difficulty Level
1	Pangram	Codeforces	1
2	Fox And Snake	Codeforces	1
3	Insomnia cure	Codeforces	1
4	Watching a movie	Codeforces	2
5	Dreamoon and WiFi	Codeforces	3
6	Playing with Paper	Codeforces	3
7	Link/Cut Tree	Codeforces	4
8	Crazy Town	Codeforces	4
9	Mr. Kitayuta, the Treasure Hunter	Codeforces	4
10	Tennis Game	Codeforces	4
11	Number of Ways	Codeforces	4
12	Error Correct System	Codeforces	4
13	Fight the Monster	Codeforces	4
14	Skills	Codeforces	4
15	Clique Problem	Codeforces	4
16	Glass Carving	Codeforces	4
17	Edo and Magnets	Codeforces	5
18	Appleman and a Sheet of Paper	Codeforces	5
19	Numbers	Codeforces	5
20	Greg and Friends	Codeforces	5
21	Watto and Mechanism	Codeforces	5
22	Jeff and Permutation	Codeforces	5
23	Sereja and Brackets	Codeforces	5
24	Freelancer's Dreams	Codeforces	5
25	Hexagons	Codeforces	5
26	Valid Sets	Codeforces	5
27	Multipliers	Codeforces	5
28	Top Secret Task	Codeforces	5
29	Characteristics of Rectangles	Codeforces	5
30	Tavas and Malekas	Codeforces	5
31	Destroying Roads	Codeforces	5
32	Mr. Kitayuta's Technology	Codeforces	5
33	Maximum Value	Codeforces	5
34	Three States	Codeforces	5
35	Antimatter	Codeforces	6
36	Dreamoon and Strings	Codeforces	6
37	Necklace	Codeforces	6
38	Number Transformation II	Codeforces	6
39	Tricky Function	Codeforces	6
40	REQ	Codeforces	6
41	Soldier and Traveling	Codeforces	6
42	Board Game	Codeforces	6
43	Jzzhu and Numbers	Codeforces	6
44	Name That Tune	Codeforces	6
45	Zip-line	Codeforces	6
46	Nudist Beach	Codeforces	6
47	Mr. Kitayuta's Colorful Graph	Codeforces	6
48	Fox And Dinner	Codeforces	6
49	Traffic Jams in the Land	Codeforces	6
50	Mike and Frog	Codeforces	6
51	Prefix Product Sequence	Codeforces	6
52	Road Improvement	Codeforces	6
53	Ann and Half-Palindrome	Codeforces	7
54	Tanya and Password	Codeforces	7
55	Tree and Queries	Codeforces	7
56	Cats Transport	Codeforces	7
57	Greg and Caves	Codeforces	7
58	Jzzhu and Apples	Codeforces	7
59	Developing Game	Codeforces	7
60	Fuzzy Search	Codeforces	7
61	Case of a Top Secret	Codeforces	7
62	CNF 2	Codeforces	7
63	GukiZ and GukiZiana	Codeforces	7
64	Arthur and Walls	Codeforces	7
65	Kingdom and its Cities	Codeforces	7
66	Tavas and Pashmaks	Codeforces	7
67	Data Center Drama	Codeforces	7
68	Hack it!	Codeforces	7
69	Remembering Strings	Codeforces	7
70	Kindergarten	Codeforces	7
71	DZY Loves Planting	Codeforces	8
72	Tavas in Kansas	Codeforces	8
73	Intergalaxy Trips	Codeforces	8
74	Largest Submatrix 3	Codeforces	8
75	Serega and Fun	Codeforces	8
76	Sign on Fence	Codeforces	8
77	Ciel and Gondolas	Codeforces	8
78	Sign Posts	Codeforces	8
79	Positions in Permutations	Codeforces	8
80	Mike and Friends	Codeforces	8
81	Appleman and Complicated Task	Codeforces	8
82	Stairs and Lines	Codeforces	8
83	Helping People	Codeforces	8
84	Birthday	Codeforces	8
85	Dreamoon and Binary	Codeforces	8
86	Conveyor Belts	Codeforces	8
87	Mr. Kitayuta vs. Bamboos	Codeforces	8
88	A Museum Robbery	Codeforces	8
89	Fox And Travelling	Codeforces	8
90	Little Elephant and Broken Sorting	Codeforces	8
91	Mike and Fish	Codeforces	8
92	Strange Sorting	Codeforces	8
93	Case of Computer Network	Codeforces	8
94	Shop	Codeforces	8
95	Gerald and Path	Codeforces	9
96	Tavas on the Path	Codeforces	9
97	Polo the Penguin and Lucky Numbers	Codeforces	9
98	Ghd	Codeforces	9
99	Warrior and Archer	Codeforces	9
100	Birthday	Codeforces	10