Ladder Name: 18 - 1900 <= Codeforces Rating <= 1999

Description: For users satisfying this condition: 1900 <= Codeforces Rating <= 1999.

Difficulty Level: 5

ID	Problem Name	Online Judge	Difficulty Level
1	Sereja and Dima	Codeforces	1
2	Gravity Flip	Codeforces	1
3	Little Pony and Crystal Mine	Codeforces	1
4	Anton and Letters	Codeforces	1
5	Fox And Snake	Codeforces	1
6	inc ARG	Codeforces	2
7	Caisa and Pylons	Codeforces	2
8	Puzzles	Codeforces	2
9	Chat room	Codeforces	2
10	Vasya and Socks	Codeforces	2
11	I Wanna Be the Guy	Codeforces	2
12	Expression	Codeforces	2
13	Counterexample	Codeforces	3
14	Flipping Game	Codeforces	3
15	Pashmak and Garden	Codeforces	3
16	Ilya and Queries	Codeforces	3
17	Cheap Travel	Codeforces	3
18	Little Pony and Expected Maximum	Codeforces	3
19	Caisa and Sugar	Codeforces	3
20	Cut Ribbon	Codeforces	3
21	Writing Code	Codeforces	4
22	Tennis Game	Codeforces	4
23	Towers	Codeforces	4
24	Ryouko's Memory Note	Codeforces	4
25	Knight Tournament	Codeforces	4
26	Andrey and Problem	Codeforces	4
27	Password	Codeforces	4
28	Interesting Array	Codeforces	4
29	Fox And Two Dots	Codeforces	4
30	Xenia and Bit Operations	Codeforces	4
31	k-Tree	Codeforces	4
32	Read Time	Codeforces	4
33	Boredom	Codeforces	4
34	Fools and Roads	Codeforces	4
35	DZY Loves Sequences	Codeforces	4
36	Breaking Good	Codeforces	5
37	Red-Green Towers	Codeforces	5
38	Pashmak and Buses	Codeforces	5
39	Mashmokh and Reverse Operation	Codeforces	5
40	Sereja and Table	Codeforces	5
41	R2D2 and Droid Army	Codeforces	5
42	Strip	Codeforces	5
43	Destroying Roads	Codeforces	5
44	A and B and Lecture Rooms	Codeforces	5
45	Obsessive String	Codeforces	5
46	Restore Cube	Codeforces	5
47	Roman and Numbers	Codeforces	5
48	Water Tree	Codeforces	5
49	Towers	Codeforces	5
50	Maximum Value	Codeforces	5
51	Valera and Swaps	Codeforces	5
52	Increase Sequence	Codeforces	5
53	Wonder Room	Codeforces	5
54	Devu and Partitioning of the Array	Codeforces	5
55	Gerald and Giant Chess	Codeforces	5
56	Watching Fireworks is Fun	Codeforces	5
57	Jeff and Rounding	Codeforces	5
58	Ciel the Commander	Codeforces	5
59	Painting Fence	Codeforces	5
60	Little Pony and Harmony Chest	Codeforces	5
61	Case of Chocolate	Codeforces	5
62	Lucky Common Subsequence	Codeforces	5
63	Sereja and Brackets	Codeforces	5
64	Kalila and Dimna in the Logging Industry	Codeforces	5
65	String	Codeforces	5
66	Civilization	Codeforces	5
67	XOR on Segment	Codeforces	5
68	Prefixes and Suffixes	Codeforces	5
69	Appleman and Tree	Codeforces	5
70	Enemy is weak	Codeforces	5
71	Jzzhu and Cities	Codeforces	5
72	Substitutes in Number	Codeforces	5
73	Little Elephant and Array	Codeforces	5
74	Pashmak and Graph	Codeforces	5
75	Propagating tree	Codeforces	5
76	Match & Catch	Codeforces	6
77	A Simple Task	Codeforces	6
78	Prefix Product Sequence	Codeforces	6
79	Vasya and Beautiful Arrays	Codeforces	6
80	Road Improvement	Codeforces	6
81	Tree Requests	Codeforces	6
82	Sereja and Squares	Codeforces	6
83	LIS of Sequence	Codeforces	6
84	Jzzhu and Numbers	Codeforces	6
85	Captains Mode	Codeforces	6
86	Mike and Foam	Codeforces	6
87	Devu and Birthday Celebration	Codeforces	6
88	Martian Strings	Codeforces	6
89	Hill Climbing	Codeforces	6
90	Antimatter	Codeforces	6
91	Tricky Function	Codeforces	6
92	The Child and Sequence	Codeforces	6
93	Tanya and Password	Codeforces	7
94	Fedor and Essay	Codeforces	7
95	Xenia and Tree	Codeforces	7
96	DZY Loves Fibonacci Numbers	Codeforces	7
97	Ann and Half-Palindrome	Codeforces	7
98	Kindergarten	Codeforces	7
99	Tree and Queries	Codeforces	7
100	Serega and Fun	Codeforces	8