Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
2 days
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brute force

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Problems

#	Name
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x4727
526A	King of Thieves brute force, implementation	1300	x4727
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x4731
407A	Triangle brute force, geometry, implementation, math	1600	x4757
1493D	GCD of an Array brute force, data structures, hashing, implementation, math, number theory, sortings, two pointers	2100	x4765
1821D	Black Cells binary search, brute force, greedy, math	1900	x4777
1593D2	Half of Same brute force, math, number theory	1900	x4813
359D	Pair of Numbers binary search, brute force, data structures, math, two pointers	2000	x4864
1343E	Weights Distributing brute force, graphs, greedy, shortest paths, sortings	2100	x4874
1207F	Remainder Problem brute force, data structures, implementation	2100	x4897
214B	Hometask brute force, constructive algorithms, greedy, math	1600	x4897
653B	Bear and Compressing brute force, dfs and similar, dp, strings	1300	x4898
1119E	Pavel and Triangles brute force, dp, fft, greedy, ternary search	1900	x4900
845B	Luba And The Ticket brute force, greedy, implementation	1600	x4943
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x4945
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x4962
1468K	The Robot brute force, implementation	1600	x4975
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x4978
568A	Primes or Palindromes? brute force, implementation, math, number theory	1600	x5005
1716D	Chip Move brute force, dp, math	2000	x5014
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x5061
1213E	Two Small Strings brute force, constructive algorithms	1900	x5061
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5086
23A	You're Given a String... brute force, greedy	1200	x5095
1475F	Unusual Matrix 2-sat, brute force, constructive algorithms	1900	x5103
1210A	Anadi and Domino brute force, graphs	1700	x5122
578B	"Or" Game brute force, greedy	1700	x5122
1367E	Necklace Assembly brute force, dfs and similar, dp, graphs, greedy, number theory	1900	x5139
299B	Ksusha the Squirrel brute force, implementation	900	x5141
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5157
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5165
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5167
252A	Little Xor brute force, implementation	1100	x5176
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5195
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5197
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5202
1415D	XOR-gun bitmasks, brute force, constructive algorithms	2000	x5203
9B	Running Student brute force, geometry, implementation	1200	x5210
579B	Finding Team Member brute force, implementation, sortings	1300	x5223
961C	Chessboard bitmasks, brute force, implementation	1400	x5239
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5268
1781D	Many Perfect Squares brute force, math, number theory	1800	x5287
1510K	King's Task brute force, graphs, implementation	1200	x5288
1372D	Omkar and Circle brute force, dp, games, greedy	2100	x5305
1744E2	Divisible Numbers (hard version) brute force, math, number theory	1900	x5312
1735D	Meta-set brute force, combinatorics, data structures, hashing, math	1700	x5319
1132C	Painting the Fence brute force	1700	x5348
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5378
1033C	Permutation Game brute force, dp, games	1600	x5393
552C	Vanya and Scales brute force, dp, greedy, math, meet-in-the-middle, number theory	1900	x5394
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5403
354A	Vasya and Robot brute force, greedy, math	1500	x5403
1379C	Choosing flowers binary search, brute force, data structures, dfs and similar, dp, greedy, sortings, two pointers	2000	x5434
1015E1	Stars Drawing (Easy Edition) brute force, dp, greedy	1700	x5486
279A	Point on Spiral brute force, geometry, implementation	1400	x5514
1118D1	Coffee and Coursework (Easy version) brute force, greedy	1700	x5532
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x5537
887B	Cubes for Masha brute force, implementation	1300	x5542
1547F	Array Stabilization (GCD version) binary search, brute force, data structures, divide and conquer, number theory, two pointers	1900	x5549
1413C	Perform Easily binary search, brute force, dp, implementation, sortings, two pointers	1900	x5553
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5561
907A	Masha and Bears brute force, implementation	1300	x5563
815A	Karen and Game brute force, greedy, implementation	1700	x5579
1812B	Was it Rated? special problem, special problem, *special problem, brute force, implementation		x5589
1264B	Beautiful Sequence brute force, constructive algorithms, greedy	1900	x5589
821B	Okabe and Banana Trees brute force, math	1300	x5646
1822F	Gardening Friends brute force, dfs and similar, dp, graphs, trees	1700	x5648
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5667
697B	Barnicle brute force, implementation, math, strings	1400	x5669
1210B	Marcin and Training Camp brute force, greedy	1700	x5671
593A	2Char brute force, implementation	1200	x5680
402C	Searching for Graph brute force, constructive algorithms, graphs	1500	x5711
18A	Triangle brute force, geometry	1500	x5715
776C	Molly's Chemicals binary search, brute force, data structures, implementation, math	1800	x5751
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x5753
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x5753
538C	Tourist's Notes binary search, brute force, greedy, implementation, math	1600	x5763
1162B	Double Matrix brute force, greedy	1400	x5769
496B	Secret Combination brute force, constructive algorithms, implementation	1500	x5812
1354C2	Not So Simple Polygon Embedding binary search, brute force, geometry, math	2000	x5819
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x5821
761C	Dasha and Password brute force, dp, implementation	1500	x5842
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x5868
172A	Phone Code *special problem, brute force, implementation	800	x5912
1807F	Bouncy Ball brute force, dfs and similar, implementation	1700	x5938
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x5941
106B	Choosing Laptop brute force, implementation	1000	x5946
205B	Little Elephant and Sorting brute force, greedy	1400	x5950
1512F	Education brute force, dp, greedy, implementation	1900	x5963
696A	Lorenzo Von Matterhorn brute force, data structures, implementation, trees	1500	x5992
1292B	Aroma's Search brute force, constructive algorithms, geometry, greedy, implementation	1700	x6048
1111C	Creative Snap binary search, brute force, divide and conquer, math	1700	x6118
300B	Coach brute force, dfs and similar, graphs	1500	x6134
192B	Walking in the Rain brute force, implementation	1100	x6153
626A	Robot Sequence brute force, implementation	1000	x6156
1012A	Photo of The Sky brute force, implementation, math, sortings	1500	x6159
1009D	Relatively Prime Graph brute force, constructive algorithms, graphs, greedy, math	1700	x6163
158D	Ice Sculptures *special problem, brute force, number theory	1300	x6181
1111B	Average Superhero Gang Power brute force, implementation, math	1700	x6189
1674E	Breaking the Wall binary search, brute force, constructive algorithms, greedy, math	2000	x6193