1700 ≤ Rating ≤ 1799 (Extra)

Extra problems for users satisfying this condition: 1700 <= Codeforces Rating <= 1799 (Extra).

LEVEL Expert

PROBLEMS 200

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PROBLEM SET

All Problems

#	PROBLEM	RATING	DIFFICULTY	TAGS
01	Circle Line CF-278/A	800	LVL 1	implementation
02	Restoring Password CF-94/A	900	LVL 1	implementationstrings
03	Playing with Dice CF-378/A	800	LVL 1	brute force
04	Colorful Stones (Simplified Edition) CF-265/A	800	LVL 1	implementation
05	Roma and Lucky Numbers CF-262/A	800	LVL 1	implementation
06	Kyoya and Photobooks CF-554/A	900	LVL 1	brute forcemathstrings
07	Valera and X CF-404/A	1000	LVL 2	implementation
08	Game With Sticks CF-451/A	900	LVL 2	implementation
09	Vasya and Digital Root CF-355/A	1100	LVL 2	constructive algorithmsimplementation
10	Multiplication Table CF-577/A	1000	LVL 2	implementationnumber theory
11	Calculating Function CF-486/A	800	LVL 2	implementationmath
12	Valera and Antique Items CF-441/A	1000	LVL 2	implementation
13	Kefa and First Steps CF-580/A	900	LVL 2	brute forcedpimplementation
14	Toy Cars CF-545/A	900	LVL 2	implementation
15	Joysticks CF-651/A	1100	LVL 2	dpgreedyimplementation +1
16	Little Frog CF-53/C	1200	LVL 2	constructive algorithms
17	Sinking Ship CF-63/A	900	LVL 2	implementationsortingsstrings
18	Case of the Zeros and Ones CF-556/A	900	LVL 2	greedy
19	Roadside Trees (Simplified Edition) CF-265/B	1000	LVL 2	greedyimplementation
20	Ciel and Dancing CF-322/A	1000	LVL 2	greedy
21	Currency System in Geraldion CF-560/A	1000	LVL 2	implementationsortings
22	Prizes, Prizes, more Prizes CF-208/D	1200	LVL 3	implementation
23	Bear and Poker CF-573/A	1300	LVL 3	implementationmathnumber theory
24	Fox and Number Game CF-389/A	1000	LVL 3	greedymath
25	A and B and Team Training CF-519/C	1300	LVL 3	greedyimplementationmath +1
26	Misha and Changing Handles CF-501/B	1100	LVL 3	data structuresdsustrings
27	Cifera CF-114/A	1000	LVL 3	math
28	Lucky Tickets CF-43/C	1300	LVL 3	greedy
29	Bar CF-56/A	1000	LVL 3	implementation
30	Bear and Elections CF-574/A	1200	LVL 3	greedyimplementation
31	Lexicographically Maximum Subsequence CF-196/A	1100	LVL 3	greedystrings
32	Strings of Power CF-318/B	1300	LVL 3	implementationstringstwo pointers
33	Lucky Permutation Triple CF-303/A	1300	LVL 3	constructive algorithmsimplementationmath
34	Good Number CF-365/A	1100	LVL 3	implementation
35	Case of Fake Numbers CF-556/B	1100	LVL 3	brute forceimplementation
36	Art Union CF-416/B	1300	LVL 3	brute forcedpimplementation
37	War of the Corporations CF-625/B	1200	LVL 3	constructive algorithmsgreedystrings
38	Fortune Telling CF-59/B	1200	LVL 3	implementationnumber theory
39	Sereja and Algorithm CF-367/A	1500	LVL 3	data structuresimplementation
40	Fedor and New Game CF-467/B	1100	LVL 3	bitmasksbrute forceconstructive algorithms +1
41	Ohana Cleans Up CF-554/B	1200	LVL 3	brute forcegreedystrings
42	Students and Shoelaces CF-129/B	1200	LVL 3	brute forcedfs and similargraphs +1
43	Xor-tree CF-429/A	1300	LVL 3	dfs and similartrees
44	Maxim and Discounts CF-261/A	1400	LVL 3	greedysortings
45	Kyoya and Colored Balls CF-553/A	1500	LVL 3	combinatoricsdpmath
46	Heap Operations CF-681/C	1600	LVL 4	constructive algorithmsdata structuresgreedy
47	Colliders CF-154/B	1600	LVL 4	mathnumber theory
48	Day at the Beach CF-599/C	1600	LVL 4	sortings
49	History CF-137/C	1500	LVL 4	sortings
50	Buns CF-106/C	1700	LVL 4	dp
51	Sereja and Contest CF-314/A	1600	LVL 4	implementation
52	Division into Teams CF-149/C	1500	LVL 4	greedymathsortings
53	Dima and Two Sequences CF-272/D	1600	LVL 4	combinatoricsmathsortings
54	Marina and Vasya CF-584/C	1700	LVL 4	constructive algorithmsgreedystrings
55	George and Number CF-387/C	1700	LVL 4	greedyimplementation
56	More Cowbell CF-604/B	1400	LVL 4	binary searchgreedy
57	Approximating a Constant Range CF-602/B	1400	LVL 4	dpimplementationtwo pointers
58	The Big Race CF-592/C	1800	LVL 4	math
59	Magic Formulas CF-424/C	1600	LVL 4	math
60	Polo the Penguin and XOR operation CF-288/C	1700	LVL 4	implementationmath
61	Gerald is into Art CF-560/B	1200	LVL 4	constructive algorithmsimplementation
62	Alice and Bob CF-346/A	1600	LVL 4	gamesmathnumber theory
63	Plate Game CF-197/A	1600	LVL 4	constructive algorithmsgamesmath
64	Tavas and Karafs CF-535/C	1900	LVL 4	binary searchgreedymath
65	Dima and Lisa CF-584/D	1800	LVL 4	brute forcemathnumber theory
66	Cows and Primitive Roots CF-284/A	1400	LVL 4	implementationmathnumber theory
67	Secret CF-271/C	1500	LVL 4	constructive algorithmsimplementation
68	Fish Weight CF-297/B	1600	LVL 4	constructive algorithmsgreedy
69	GCD Table CF-582/A	1700	LVL 4	constructive algorithmsgreedynumber theory
70	DZY Loves Chemistry CF-445/B	1400	LVL 4	dfs and similardsugreedy
71	Olympiad CF-222/D	1900	LVL 4	binary searchgreedysortings +1
72	Preparing Olympiad CF-550/B	1400	LVL 4	bitmasksbrute force
73	Image Preview CF-650/B	1900	LVL 4	binary searchbrute forcedp +1
74	Alyona and the Tree CF-682/C	1600	LVL 4	dfs and similardpgraphs +1
75	Biridian Forest CF-329/B	1500	LVL 4	dfs and similarshortest paths
76	Gena's Code CF-614/B	1400	LVL 4	implementationmath
77	Dynasty Puzzles CF-191/A	1500	LVL 4	dp
78	Eight Point Sets CF-334/B	1400	LVL 4	sortings
79	Secret Combination CF-496/B	1500	LVL 4	brute forceconstructive algorithmsimplementation
80	Fire Again CF-35/C	1500	LVL 4	brute forcedfs and similarshortest paths
81	Replacement CF-570/C	1600	LVL 4	constructive algorithmsdata structuresimplementation
82	Lazy Student CF-605/B	1700	LVL 4	constructive algorithmsdata structuresgraphs
83	Quiz CF-337/C	1600	LVL 4	binary searchgreedymath +2
84	Queue CF-545/D	1300	LVL 4	greedyimplementationsortings
85	Wet Shark and Flowers CF-621/C	1700	LVL 4	combinatoricsmathnumber theory +1
86	Han Solo and Lazer Gun CF-514/B	1400	LVL 4	brute forcedata structuresgeometry +2
87	Two Heaps CF-353/B	1900	LVL 4	combinatoricsconstructive algorithmsgreedy +3
88	Vasya and String CF-676/C	1500	LVL 4	binary searchdpstrings +1
89	Clear Symmetry CF-201/A	1700	LVL 4	constructive algorithmsdpmath
90	Hometask CF-154/A	1600	LVL 4	greedy
91	Case of Matryoshkas CF-555/A	1500	LVL 4	implementation
92	Report CF-631/C	1700	LVL 4	data structuressortings
93	Amr and Pins CF-507/B	1400	LVL 4	geometrymath
94	Bracket Sequence CF-223/A	1700	LVL 4	data structuresexpression parsingimplementation
95	Alternating Current CF-343/B	1600	LVL 4	data structuresgreedyimplementation
96	Win or Freeze CF-150/A	1400	LVL 4	gamesmathnumber theory
97	Soldier and Badges CF-546/B	1200	LVL 4	brute forcegreedyimplementation +1
98	Unordered Subsequence CF-27/C	1900	LVL 4	constructive algorithmsgreedy
99	Woodcutters CF-545/C	1500	LVL 4	dpgreedy
100	Perfect Pair CF-317/A	1600	LVL 4	brute force
101	Tree Construction CF-675/D	1800	LVL 4	data structurestrees
102	The Values You Can Make CF-687/C	1900	LVL 4	dp
103	Magic Five CF-327/C	1700	LVL 4	combinatoricsmath
104	Falling Anvils CF-77/B	1800	LVL 4	mathprobabilities
105	Vasily the Bear and Sequence CF-336/C	1800	LVL 4	brute forcegreedyimplementation +1
106	Vasiliy's Multiset CF-706/D	1800	LVL 4	binary searchbitmasksdata structures +1
107	Bits CF-484/A	1700	LVL 4	bitmasksconstructive algorithms
108	Divisible by Seven CF-375/A	1600	LVL 4	mathnumber theory
109	Zuma CF-607/B	1900	LVL 4	dp
110	Primes on Interval CF-237/C	1600	LVL 4	binary searchnumber theorytwo pointers
111	Road Map CF-34/D	1600	LVL 4	dfs and similargraphs
112	Harmony Analysis CF-610/C	1800	LVL 4	constructive algorithms
113	Rational Resistance CF-343/A	1600	LVL 4	mathnumber theory
114	Prime Swaps CF-432/C	1800	LVL 4	greedysortings
115	Cthulhu CF-103/B	1500	LVL 4	dfs and similardsugraphs
116	Pasha and Tea CF-557/B	1500	LVL 4	constructive algorithmsimplementationmath +1
117	Find Maximum CF-353/C	1600	LVL 4	implementationmathnumber theory
118	k-Multiple Free Set CF-274/A	1500	LVL 4	binary searchgreedysortings
119	Recycling Bottles CF-671/A	1800	LVL 4	dpgeometrygreedy +1
120	Bear and Three Musketeers CF-574/B	1500	LVL 4	brute forcedfs and similargraphs +1
121	Beauty Pageant CF-246/C	1600	LVL 4	brute forceconstructive algorithmsgreedy
122	About Bacteria CF-198/A	1700	LVL 4	implementationmath
123	Spongebob and Joke CF-599/B	1500	LVL 4	implementation
124	Bear and Blocks CF-573/B	1600	LVL 4	binary searchdata structuresdp +1
125	Two Substrings CF-550/A	1500	LVL 4	brute forcedpgreedy +2
126	Chips CF-333/B	1800	LVL 4	greedy
127	Guest From the Past CF-625/A	1700	LVL 4	implementationmath
128	Subsegments CF-69/E	1800	LVL 4	data structuresimplementation
129	Magic Box CF-231/D	1600	LVL 4	brute forcegeometry
130	Planets CF-229/B	1700	LVL 4	binary searchdata structuresgraphs +1
131	Longtail Hedgehog CF-615/B	1600	LVL 4	dpgraphs
132	Queue CF-91/B	1500	LVL 4	binary searchdata structures
133	The Child and Zoo CF-437/D	1900	LVL 4	dsusortings
134	Watering Flowers CF-617/C	1600	LVL 4	implementation
135	Polyline CF-617/D	1700	LVL 4	constructive algorithmsimplementation
136	Money Transfers CF-675/C	2100	LVL 5	constructive algorithmsdata structuresgreedy +1
137	3-cycles CF-41/E	1900	LVL 5	constructive algorithmsgraphsgreedy
138	Numbers CF-213/B	1900	LVL 5	combinatoricsdp
139	Persistent Bookcase CF-707/D	2200	LVL 5	bitmasksdata structuresdfs and similar +1
140	Number With The Given Amount Of Divisors CF-27/E	2000	LVL 5	brute forcedpnumber theory
141	Cipher CF-156/C	2000	LVL 5	combinatoricsdp
142	Friends and Subsequences CF-689/D	2100	LVL 5	binary searchdata structures
143	Last Chance CF-137/E	2000	LVL 5	data structuresimplementationstrings
144	Messenger CF-631/D	2100	LVL 5	data structureshashingimplementation +2
145	Mishka and Interesting sum CF-703/D	2100	LVL 5	data structures
146	Relay Race CF-213/C	2000	LVL 5	dp
147	Black and White Tree CF-260/D	2100	LVL 5	constructive algorithmsdsugraphs +2
148	Sereja and Periods CF-314/B	2000	LVL 5	binary searchdfs and similarstrings
149	Dima and Containers CF-358/C	2000	LVL 5	constructive algorithmsgreedyimplementation
150	Reducing Fractions CF-222/C	1800	LVL 5	implementationmathnumber theory +1
151	Alyona and Strings CF-682/D	1900	LVL 5	dpstrings
152	Police Station CF-208/C	1900	LVL 5	dpgraphsshortest paths
153	Pawn CF-41/D	1900	LVL 5	dp
154	Permutation Sum CF-285/D	1900	LVL 5	bitmaskscombinatoricsdp +2
155	Ilya and Roads CF-313/D	2100	LVL 5	dp
156	Triangles CF-229/C	1900	LVL 5	combinatoricsgraphsmath
157	Gifts by the List CF-681/D	2000	LVL 5	constructive algorithmsdfs and similargraphs +1
158	Spongebob and Squares CF-599/D	1900	LVL 5	brute forcemath
159	Flawed Flow CF-269/C	2100	LVL 5	constructive algorithmsflowsgraphs +1
160	Hydra CF-243/B	2000	LVL 5	graphssortings
161	Police Patrol CF-427/E	2000	LVL 5	greedyimplementationmath +1
162	Decoding Genome CF-222/E	1900	LVL 5	dpmatrices
163	Points on Plane CF-576/C	2100	LVL 5	constructive algorithmsdivide and conquergeometry +2
164	Apple Tree CF-348/B	2100	LVL 5	dfs and similarnumber theorytrees
165	Domino Principle CF-56/E	2200	LVL 5	binary searchdata structuressortings
166	Little Elephant and LCM CF-258/C	2000	LVL 5	binary searchcombinatoricsdp +1
167	Minesweeper 1D CF-404/D	1900	LVL 5	dpimplementation
168	Two Strings CF-223/B	1900	LVL 5	data structuresdpstrings
169	Vanya and Triangles CF-552/D	1900	LVL 5	brute forcecombinatoricsdata structures +3
170	Shaass and Lights CF-294/C	1900	LVL 5	combinatoricsnumber theory
171	Cycle in Graph CF-263/D	1800	LVL 5	dfs and similargraphs
172	Compatible Numbers CF-165/E	2200	LVL 5	bitmasksbrute forcedfs and similar +1
173	Ring Road 2 CF-27/D	2200	LVL 5	2-satdfs and similardsu +1
174	Running Track CF-615/C	2000	LVL 5	dpgreedystrings +1
175	Famil Door and Brackets CF-629/C	2000	LVL 5	dpstrings
176	Sum CF-257/D	1900	LVL 5	greedymath
177	Fox And Jumping CF-510/D	1900	LVL 5	bitmasksbrute forcedp +1
178	Journey CF-721/C	1800	LVL 5	dpgraphs
179	Paths and Trees CF-545/E	2000	LVL 5	graphsgreedyshortest paths
180	Vitaly and Cycle CF-557/D	2000	LVL 5	combinatoricsdfs and similargraphs +1
181	Block Tower CF-327/D	1900	LVL 5	constructive algorithmsdfs and similargraphs
182	Dispute CF-242/D	2100	LVL 5	dfs and similargraphsgreedy
183	Random Task CF-431/D	2100	LVL 5	binary searchbitmaskscombinatorics +2
184	Arthur and Table CF-557/C	1900	LVL 5	brute forcedata structuresdp +3
185	Queue CF-353/D	2000	LVL 5	constructive algorithmsdp
186	Amr and Chemistry CF-558/C	1900	LVL 5	brute forcegraphsgreedy +2
187	The Road to Berland is Paved With Good Intentions CF-228/E	1900	LVL 5	2-satdfs and similardsu +1
188	Babaei and Birthday Cake CF-629/D	2000	LVL 5	data structuresdp
189	Kefa and Dishes CF-580/D	1800	LVL 5	bitmasksdp
190	Modulo Sum CF-577/B	1900	LVL 5	combinatoricsdata structuresdp +1
191	Yet Another Number Game CF-282/D	2100	LVL 6	dpgames
192	Edges in MST CF-160/D	2300	LVL 6	dfs and similardsugraphs +1
193	Arthur and Brackets CF-508/E	2200	LVL 6	dpgreedy
194	Vanya and Brackets CF-552/E	2100	LVL 6	brute forcedpexpression parsing +3
195	Devu and Flowers CF-451/E	2300	LVL 6	bitmaskscombinatoricsnumber theory
196	Anya and Cubes CF-525/E	2100	LVL 6	binary searchbitmasksbrute force +3
197	Vasily the Bear and Beautiful Strings CF-336/D	2100	LVL 6	combinatoricsmathnumber theory
198	Little Victor and Set CF-460/D	2300	LVL 7	brute forceconstructive algorithmsmath
199	Axis Walking CF-327/E	2300	LVL 7	bitmaskscombinatoricsconstructive algorithms +2
200	Kefa and Watch CF-580/E	2500	LVL 7	data structureshashingstrings

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