Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
670D1	Magic Powder - 1 binary search, brute force, implementation	1400	x17772
670C	Cinema implementation, sortings	1300	x9130
670B	Game of Robots implementation	1000	x11223
670A	Holidays brute force, constructive algorithms, greedy, math	900	x16941
669A	Little Artem and Presents math	800	x10796
667B	Coat of Anticubism constructive algorithms, geometry	1100	x5618
667A	Pouring Rain geometry, math	1100	x8021
666E	Forensic Examination data structures, string suffix structures	3100	x1395
666D	Chain Reaction brute force, geometry	3000	x280
666C	Codeword combinatorics, strings	2500	x785
666B	World Tour graphs, shortest paths	2000	x2167
666A	Reberland Linguistics dp, implementation, strings	1800	x3478
665F	Four Divisors data structures, dp, math, number theory, sortings, two pointers	2400	x614
665E	Beautiful Subarrays data structures, divide and conquer, strings, trees	2100	x3144
665D	Simple Subset constructive algorithms, greedy, number theory	1800	x3480
665C	Simple Strings dp, greedy, strings	1300	x10305
665B	Shopping brute force	1400	x3542
665A	Buses Between Cities implementation	1600	x2931
664A	Complicated GCD math, number theory	800	x18144
663A	Rebus constructive algorithms, expression parsing, greedy, math	1800	x3296
662E	To Hack or not to Hack brute force, dp, greedy	3100	x139
662D	International Olympiad constructive algorithms, greedy, implementation, math	2000	x1632
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x2017
662B	Graph Coloring dfs and similar, graphs	2200	x1475
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x469
661H	Rotate Matrix *special problem	2400	x69
661G	Hungarian Notation *special problem	2200	x56
661F	Primes in Interval *special problem	1900	x323
661E	Divisibility Check *special problem	2000	x84
661D	Maximal Difference *special problem	2100	x132
661C	Array Sum *special problem	2000	x132
661B	Seasons *special problem	1900	x228
661A	Lazy Caterer Sequence *special problem	1300	x637
660F	Bear and Bowling 4 binary search, data structures, divide and conquer, geometry, ternary search	2500	x1651
660E	Different Subsets For All Tuples combinatorics, math	2300	x1501
660D	Number of Parallelograms geometry	1900	x3973
660C	Hard Process binary search, dp, two pointers	1600	x9392
660B	Seating On Bus implementation	1000	x5349
660A	Co-prime Array greedy, implementation, math, number theory	1200	x8900
659G	Fence Divercity combinatorics, dp, number theory	2300	x1183
659F	Polycarp and Hay dfs and similar, dsu, graphs, greedy, sortings	2000	x1785
659E	New Reform data structures, dfs and similar, dsu, graphs, greedy	1600	x7451
659D	Bicycle Race geometry, implementation, math	1500	x6314
659C	Tanya and Toys greedy, implementation	1200	x11479
659B	Qualifying Contest constructive algorithms, sortings	1300	x6267
659A	Round House implementation, math	1000	x15675
658A	Bear and Reverse Radewoosh implementation	800	x7068
656G	You're a Professional *special problem	1900	x483
656F	Ace It! *special problem	1900	x907
656E	Out of Controls *special problem	2000	x726
656D	Rosetta Problem *special problem	2100	x958
656C	Without Text *special problem	2000	x693
656B	Scrambled *special problem, implementation	1700	x1654
656A	Da Vinci Powers *special problem	1900	x3615
653G	Move by Prime combinatorics, math, number theory	3100	x549
653F	Paper task data structures, string suffix structures, strings	2600	x993
653E	Bear and Forgotten Tree 2 dfs and similar, dsu, graphs, trees	2400	x1506
653D	Delivery Bears binary search, flows, graphs	2200	x2405
653C	Bear and Up-Down brute force, implementation	1900	x1645
653B	Bear and Compressing brute force, dfs and similar, dp, strings	1300	x4971
653A	Bear and Three Balls brute force, implementation, sortings	900	x8201
652F	Ants on a Circle constructive algorithms, math	2800	x551
652E	Pursuit For Artifacts dfs and similar, dsu, graphs, trees	2300	x2124
652D	Nested Segments data structures, sortings	1800	x3975
652C	Foe Pairs combinatorics, sortings, two pointers	1800	x3222
652B	z-sort sortings	1000	x10127
652A	Gabriel and Caterpillar implementation, math	1400	x4626
651B	Beautiful Paintings greedy, sortings	1200	x11560
651A	Joysticks dp, greedy, implementation, math	1100	x22925
650E	Clockwork Bomb data structures, dfs and similar, dsu, greedy, trees	3200	x598
650D	Zip-line binary search, data structures, dp, hashing	2600	x1331
650C	Table Compression dfs and similar, dp, dsu, graphs, greedy	2200	x1981
650B	Image Preview binary search, brute force, dp, two pointers	1900	x3346
650A	Watchmen data structures, geometry, math	1400	x15472
649E	Автобус binary search, data structures, greedy, sortings	2100	x108
649D	Дефрагментация памяти constructive algorithms, greedy, implementation	1600	x356
649C	Печать условий constructive algorithms, greedy, sortings	1500	x455
649B	Этажи constructive algorithms	1400	x536
649A	Любимые числа Поликарпа constructive algorithms, implementation	1000	x1215
648E	Собери число graphs, shortest paths	2300	x127
648D	Собачки и миски data structures, greedy, sortings	1900	x232
648C	Путь Робота constructive algorithms, dfs and similar, graphs	1100	x947
648B	Собери стол constructive algorithms, sortings	800	x1444
648A	Наибольший подъем constructive algorithms, implementation	900	x677
645G	Armistice Area Apportionment binary search, geometry	3200	x112
645F	Cowslip Collections combinatorics, math, number theory	2500	x788
645E	Intellectual Inquiry dp, greedy, strings	2200	x1240
645D	Robot Rapping Results Report binary search, dp, graphs	1800	x2887
645C	Enduring Exodus binary search, two pointers	1600	x3274
645B	Mischievous Mess Makers greedy, math	1200	x3400
645A	Amity Assessment brute force, constructive algorithms, implementation	1200	x3451
644C	Hostname Aliases *special problem, binary search, data structures, implementation, sortings, strings	2100	x917
644B	Processing Queries *special problem, constructive algorithms, data structures, two pointers	1700	x2700
644A	Parliament of Berland *special problem, constructive algorithms	1000	x4452
643G	Choosing Ads data structures	3200	x985
643F	Bears and Juice dp, math, meet-in-the-middle	2900	x701
643E	Bear and Destroying Subtrees dp, math, probabilities, trees	2700	x638
643D	Bearish Fanpages	2900	x315
643C	Levels and Regions dp	2400	x1383
643B	Bear and Two Paths constructive algorithms, graphs	1600	x3168