1600 ≤ Rating ≤ 1699 (Extra)

Extra problems for users satisfying this condition: 1600 <= Codeforces Rating <= 1699 (Extra).

LEVEL Expert

PROBLEMS 200

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PROBLEM SET

All Problems

#	PROBLEM	RATING	DIFFICULTY	TAGS
01	Colorful Stones (Simplified Edition) CF-265/A	800	LVL 1	implementation
02	Rewards CF-448/A	800	LVL 1	implementation
03	Roma and Lucky Numbers CF-262/A	800	LVL 1	implementation
04	Soroban CF-363/A	800	LVL 1	implementation
05	Toy Army CF-84/A	900	LVL 1	mathnumber theory
06	Greg's Workout CF-255/A	800	LVL 1	implementation
07	George and Accommodation CF-467/A	800	LVL 1	implementation
08	Case of the Zeros and Ones CF-556/A	900	LVL 2	greedy
09	Table CF-359/A	1000	LVL 2	constructive algorithmsgreedyimplementation
10	Cows and Poker Game CF-284/B	1000	LVL 2	brute forceimplementation
11	Drazil and Date CF-515/A	1000	LVL 2	math
12	Exams CF-194/A	900	LVL 2	implementationmath
13	Sinking Ship CF-63/A	900	LVL 2	implementationsortingsstrings
14	Sereja and Coat Rack CF-368/A	1000	LVL 2	implementation
15	Worms Evolution CF-31/A	1200	LVL 2	implementation
16	Lecture CF-499/B	1000	LVL 2	implementationstrings
17	Valera and Antique Items CF-441/A	1000	LVL 2	implementation
18	Game With Sticks CF-451/A	900	LVL 2	implementation
19	Squares CF-263/B	900	LVL 2	greedyimplementationsortings
20	Trace CF-157/B	1000	LVL 2	geometrysortings
21	Little Frog CF-53/C	1200	LVL 2	constructive algorithms
22	Valera and Plates CF-369/A	900	LVL 2	greedyimplementation
23	Calculating Function CF-486/A	800	LVL 2	implementationmath
24	Sereja and Algorithm CF-367/A	1500	LVL 3	data structuresimplementation
25	Chat Online CF-469/B	1300	LVL 3	implementation
26	Domino Effect CF-405/B	1100	LVL 3
27	Good Number CF-365/A	1100	LVL 3	implementation
28	Lucky Permutation CF-286/A	1400	LVL 3	constructive algorithmsmath
29	Fox and Number Game CF-389/A	1000	LVL 3	greedymath
30	Magical Array CF-83/A	1300	LVL 3	math
31	Replacement CF-135/A	1300	LVL 3	greedyimplementationsortings
32	Drazil and Factorial CF-515/C	1400	LVL 3	greedymathsortings
33	Bear and Strings CF-385/B	1200	LVL 3	brute forcegreedyimplementation +2
34	The Child and Homework CF-437/A	1300	LVL 3	implementation
35	Dorm Water Supply CF-107/A	1400	LVL 3	dfs and similargraphs
36	Misha and Changing Handles CF-501/B	1100	LVL 3	data structuresdsustrings
37	Maxim and Discounts CF-261/A	1400	LVL 3	greedysortings
38	Permutation CF-359/B	1400	LVL 3	constructive algorithmsdpmath
39	Tavas and SaDDas CF-535/B	1100	LVL 3	bitmasksbrute forcecombinatorics +1
40	Levko and Permutation CF-361/B	1200	LVL 3	constructive algorithmsmathnumber theory
41	Testing Pants for Sadness CF-103/A	1100	LVL 3	greedyimplementationmath
42	Multithreading CF-270/B	1400	LVL 3	data structuresgreedyimplementation
43	The Wall CF-340/A	1200	LVL 3	math
44	Milking cows CF-383/A	1600	LVL 3	data structuresgreedy
45	MUH and Sticks CF-471/A	1100	LVL 3	implementation
46	Anton and currency you all know CF-508/B	1300	LVL 3	greedymathstrings
47	Email address CF-41/C	1300	LVL 3	expression parsingimplementation
48	Little Xor CF-252/A	1100	LVL 3	brute forceimplementation
49	Strings of Power CF-318/B	1300	LVL 3	implementationstringstwo pointers
50	Rook, Bishop and King CF-370/A	1100	LVL 3	graphsmathshortest paths
51	Valuable Resources CF-485/B	1300	LVL 3	brute forcegreedy
52	Art Union CF-416/B	1300	LVL 3	brute forcedpimplementation
53	Ohana Cleans Up CF-554/B	1200	LVL 3	brute forcegreedystrings
54	A and B and Compilation Errors CF-519/B	1100	LVL 3	data structuresimplementationsortings
55	Plant CF-185/A	1300	LVL 3	math
56	A and B and Team Training CF-519/C	1300	LVL 3	greedyimplementationmath +1
57	Fedor and New Game CF-467/B	1100	LVL 3	bitmasksbrute forceconstructive algorithms +1
58	Xor-tree CF-429/A	1300	LVL 3	dfs and similartrees
59	Prizes, Prizes, more Prizes CF-208/D	1200	LVL 3	implementation
60	Forming Teams CF-216/B	1700	LVL 4	dfs and similarimplementation
61	Sysadmin Bob CF-31/B	1500	LVL 4	greedyimplementationstrings
62	Perfect Pair CF-317/A	1600	LVL 4	brute force
63	The Two Routes CF-601/A	1600	LVL 4	graphsshortest paths
64	Eight Point Sets CF-334/B	1400	LVL 4	sortings
65	Cloud of Hashtags CF-777/D	1800	LVL 4	binary searchgreedyimplementation +1
66	Martian Dollar CF-41/B	1400	LVL 4	brute force
67	Guess Your Way Out! CF-507/C	1700	LVL 4	implementationmathtrees
68	Alice and Bob CF-346/A	1600	LVL 4	gamesmathnumber theory
69	STL CF-190/C	1500	LVL 4	dfs and similar
70	Magical Boxes CF-269/A	1600	LVL 4	greedymath
71	Replacement CF-570/C	1600	LVL 4	constructive algorithmsdata structuresimplementation
72	Tavas and Karafs CF-535/C	1900	LVL 4	binary searchgreedymath
73	Mike and Fun CF-548/B	1400	LVL 4	brute forcedpgreedy +1
74	Marina and Vasya CF-584/C	1700	LVL 4	constructive algorithmsgreedystrings
75	Fish Weight CF-297/B	1600	LVL 4	constructive algorithmsgreedy
76	Dreamoon and Sets CF-476/D	1900	LVL 4	constructive algorithmsgreedymath
77	Alternating Current CF-343/B	1600	LVL 4	data structuresgreedyimplementation
78	Olympiad CF-222/D	1900	LVL 4	binary searchgreedysortings +1
79	Xenia and Spies CF-342/B	1500	LVL 4	brute forcegreedyimplementation
80	Chilly Willy CF-248/B	1400	LVL 4	mathnumber theory
81	Planets CF-229/B	1700	LVL 4	binary searchdata structuresgraphs +1
82	Queue CF-545/D	1300	LVL 4	greedyimplementationsortings
83	Longtail Hedgehog CF-615/B	1600	LVL 4	dpgraphs
84	Message CF-156/A	1700	LVL 4	brute force
85	Voting CF-749/C	1500	LVL 4	greedyimplementationtwo pointers
86	Polo the Penguin and Houses CF-288/B	1500	LVL 4	combinatorics
87	Pasha and String CF-525/B	1400	LVL 4	constructive algorithmsgreedymath +1
88	Toy Sum CF-405/D	1700	LVL 4	greedyimplementationmath
89	Tree Construction CF-675/D	1800	LVL 4	data structurestrees
90	Report CF-631/C	1700	LVL 4	data structuressortings
91	Bear and Blocks CF-573/B	1600	LVL 4	binary searchdata structuresdp +1
92	Dima and Two Sequences CF-272/D	1600	LVL 4	combinatoricsmathsortings
93	Trees in a Row CF-402/B	1400	LVL 4	brute forceimplementation
94	Terse princess CF-148/C	1700	LVL 4	constructive algorithmsgreedy
95	Chloe and pleasant prizes CF-743/D	1800	LVL 4	dfs and similardpgraphs +1
96	GCD Table CF-582/A	1700	LVL 4	constructive algorithmsgreedynumber theory
97	Prime Swaps CF-432/C	1800	LVL 4	greedysortings
98	Soldier and Cards CF-546/C	1400	LVL 4	brute forcedfs and similargames
99	DNA Alignment CF-520/C	1500	LVL 4	mathstrings
100	Sereja and Swaps CF-425/A	1500	LVL 4	brute forcesortings
101	The Big Race CF-592/C	1800	LVL 4	math
102	Image Preview CF-650/B	1900	LVL 4	binary searchbrute forcedp +1
103	Find Pair CF-160/C	1700	LVL 4	implementationmathsortings
104	Mike and Chocolate Thieves CF-689/C	1700	LVL 4	binary searchcombinatoricsmath
105	Petya and Inequiations CF-111/A	1400	LVL 4	greedy
106	Non-Secret Cypher CF-190/D	1900	LVL 4	two pointers
107	Division into Teams CF-149/C	1500	LVL 4	greedymathsortings
108	Predict Outcome of the Game CF-451/C	1700	LVL 4	brute forceimplementationmath
109	The Child and Zoo CF-437/D	1900	LVL 4	dsusortings
110	Nearest Fraction CF-281/B	1700	LVL 4	brute forceimplementationtwo pointers
111	Purification CF-329/A	1500	LVL 4	constructive algorithmsgreedy
112	Dynasty Puzzles CF-191/A	1500	LVL 4	dp
113	Secret Combination CF-496/B	1500	LVL 4	brute forceconstructive algorithmsimplementation
114	Divisible by Seven CF-375/A	1600	LVL 4	mathnumber theory
115	Burning Midnight Oil CF-165/B	1500	LVL 4	binary searchimplementation
116	School Marks CF-540/B	1700	LVL 4	greedyimplementation
117	Road Map CF-34/D	1600	LVL 4	dfs and similargraphs
118	Harmony Analysis CF-610/C	1800	LVL 4	constructive algorithms
119	Magic Formulas CF-424/C	1600	LVL 4	math
120	Pasha and Tea CF-557/B	1500	LVL 4	constructive algorithmsimplementationmath +1
121	24 Game CF-468/A	1500	LVL 4	constructive algorithmsgreedymath
122	Basketball Team CF-107/B	1600	LVL 4	combinatoricsdpmath +1
123	Heap Operations CF-681/C	1600	LVL 4	constructive algorithmsdata structuresgreedy
124	Rational Resistance CF-343/A	1600	LVL 4	mathnumber theory
125	Strange Addition CF-305/A	1600	LVL 4	brute forceconstructive algorithmsimplementation
126	Ivan and Powers of Two CF-305/C	1600	LVL 4	greedyimplementation
127	Beauty Pageant CF-246/C	1600	LVL 4	brute forceconstructive algorithmsgreedy
128	Modular Equations CF-495/B	1600	LVL 4	mathnumber theory
129	Quantity of Strings CF-150/B	1600	LVL 4	combinatoricsdfs and similargraphs +1
130	Gerald's Hexagon CF-559/A	1600	LVL 4	brute forcegeometrymath
131	ZgukistringZ CF-551/B	1800	LVL 4	brute forceconstructive algorithmsimplementation +1
132	Non-square Equation CF-233/B	1400	LVL 4	binary searchbrute forcemath
133	Find Maximum CF-353/C	1600	LVL 4	implementationmathnumber theory
134	Alyona and the Tree CF-682/C	1600	LVL 4	dfs and similardpgraphs +1
135	Newspaper Headline CF-91/A	1500	LVL 4	greedystrings
136	MUH and House of Cards CF-471/C	1700	LVL 4	binary searchbrute forcegreedy +1
137	Vasya and String CF-676/C	1500	LVL 4	binary searchdpstrings +1
138	Amr and Pins CF-507/B	1400	LVL 4	geometrymath
139	Buns CF-106/C	1700	LVL 4	dp
140	Magic Five CF-327/C	1700	LVL 4	combinatoricsmath
141	Cows and Primitive Roots CF-284/A	1400	LVL 4	implementationmathnumber theory
142	Vasily the Bear and Sequence CF-336/C	1800	LVL 4	brute forcegreedyimplementation +1
143	Preparing Olympiad CF-550/B	1400	LVL 4	bitmasksbrute force
144	Bear and Three Musketeers CF-574/B	1500	LVL 4	brute forcedfs and similargraphs +1
145	Undoubtedly Lucky Numbers CF-244/B	1600	LVL 4	bitmasksbrute forcedfs and similar
146	Dreamoon and Sums CF-476/C	1600	LVL 4	math
147	Cthulhu CF-103/B	1500	LVL 4	dfs and similardsugraphs
148	Win or Freeze CF-150/A	1400	LVL 4	gamesmathnumber theory
149	Quiz CF-337/C	1600	LVL 4	binary searchgreedymath +2
150	Anagram Search CF-144/C	1500	LVL 4	implementationstrings
151	Two Substrings CF-550/A	1500	LVL 4	brute forcedpgreedy +2
152	Subsegments CF-69/E	1800	LVL 4	data structuresimplementation
153	History CF-137/C	1500	LVL 4	sortings
154	Primes on Interval CF-237/C	1600	LVL 4	binary searchnumber theorytwo pointers
155	The Child and Set CF-437/B	1500	LVL 4	bitmasksgreedyimplementation +1
156	OR in Matrix CF-486/B	1300	LVL 4	greedyhashingimplementation
157	DZY Loves Chemistry CF-445/B	1400	LVL 4	dfs and similardsugreedy
158	Vasiliy's Multiset CF-706/D	1800	LVL 4	binary searchbitmasksdata structures +1
159	Bits CF-484/A	1700	LVL 4	bitmasksconstructive algorithms
160	Ilya and Sticks CF-525/C	1600	LVL 4	greedymathsortings
161	Dima and Lisa CF-584/D	1800	LVL 4	brute forcemathnumber theory
162	Kefa and Park CF-580/C	1500	LVL 4	dfs and similargraphstrees
163	Queue CF-91/B	1500	LVL 4	binary searchdata structures
164	Woodcutters CF-545/C	1500	LVL 4	dpgreedy
165	Biridian Forest CF-329/B	1500	LVL 4	dfs and similarshortest paths
166	k-Multiple Free Set CF-274/A	1500	LVL 4	binary searchgreedysortings
167	Magic Box CF-231/D	1600	LVL 4	brute forcegeometry
168	Alyona and Strings CF-682/D	1900	LVL 5	dpstrings
169	Dispute CF-242/D	2100	LVL 5	dfs and similargraphsgreedy
170	Volleyball CF-95/C	1900	LVL 5	shortest paths
171	Decoding Genome CF-222/E	1900	LVL 5	dpmatrices
172	Running Track CF-615/C	2000	LVL 5	dpgreedystrings +1
173	Police Station CF-208/C	1900	LVL 5	dpgraphsshortest paths
174	Money Transfers CF-675/C	2100	LVL 5	constructive algorithmsdata structuresgreedy +1
175	Mishka and Interesting sum CF-703/D	2100	LVL 5	data structures
176	Queue CF-353/D	2000	LVL 5	constructive algorithmsdp
177	Directed Roads CF-711/D	1900	LVL 5	combinatoricsdfs and similargraphs +1
178	Spongebob and Squares CF-599/D	1900	LVL 5	brute forcemath
179	Black and White Tree CF-260/D	2100	LVL 5	constructive algorithmsdsugraphs +2
180	Ilya and Roads CF-313/D	2100	LVL 5	dp
181	Babaei and Birthday Cake CF-629/D	2000	LVL 5	data structuresdp
182	Block Tower CF-327/D	1900	LVL 5	constructive algorithmsdfs and similargraphs
183	Police Patrol CF-427/E	2000	LVL 5	greedyimplementationmath +1
184	Persistent Bookcase CF-707/D	2200	LVL 5	bitmasksdata structuresdfs and similar +1
185	Random Task CF-431/D	2100	LVL 5	binary searchbitmaskscombinatorics +2
186	Number With The Given Amount Of Divisors CF-27/E	2000	LVL 5	brute forcedpnumber theory
187	Cycle in Graph CF-263/D	1800	LVL 5	dfs and similargraphs
188	Circle of Numbers CF-263/C	2000	LVL 5	brute forcedfs and similarimplementation
189	Fox And Jumping CF-510/D	1900	LVL 5	bitmasksbrute forcedp +1
190	Vanya and Triangles CF-552/D	1900	LVL 5	brute forcecombinatoricsdata structures +3
191	Shaass and Lights CF-294/C	1900	LVL 5	combinatoricsnumber theory
192	Vitaly and Cycle CF-557/D	2000	LVL 5	combinatoricsdfs and similargraphs +1
193	Minesweeper 1D CF-404/D	1900	LVL 5	dpimplementation
194	Modulo Sum CF-577/B	1900	LVL 5	combinatoricsdata structuresdp +1
195	Amr and Chemistry CF-558/C	1900	LVL 5	brute forcegraphsgreedy +2
196	Arthur and Table CF-557/C	1900	LVL 5	brute forcedata structuresdp +3
197	Paths and Trees CF-545/E	2000	LVL 5	graphsgreedyshortest paths
198	Kefa and Dishes CF-580/D	1800	LVL 5	bitmasksdp
199	Anya and Cubes CF-525/E	2100	LVL 6	binary searchbitmasksbrute force +3
200	Yet Another Number Game CF-282/D	2100	LVL 6	dpgames

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