Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
851B	Arpa and an exam about geometry geometry, math	1400	x5492
851A	Arpa and a research in Mexican wave implementation, math	800	x9687
850F	Rainbow Balls math	2800	x661
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x386
850D	Tournament Construction constructive algorithms, dp, graphs, greedy, math	2800	x386
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1485
850B	Arpa and a list of numbers implementation, number theory	2100	x2024
850A	Five Dimensional Points brute force, geometry, math	1700	x3197
849B	Tell Your World brute force, geometry	1600	x3640
849A	Odds and Ends implementation	1000	x9064
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x212
848D	Shake It! combinatorics, dp, flows, graphs	2900	x382
848C	Goodbye Souvenir data structures, divide and conquer	2600	x1364
848B	Rooter's Song constructive algorithms, data structures, geometry, implementation, sortings, two pointers	1900	x1895
848A	From Y to Y constructive algorithms	1600	x5121
847M	Weather Tomorrow implementation, math	1000	x6279
847L	Berland SU Computer Network constructive algorithms, dfs and similar, graphs, hashing, trees	2400	x320
847K	Travel Cards greedy, implementation, sortings	1800	x1688
847J	Students Initiation binary search, flows, graphs	2400	x629
847I	Noise Level dfs and similar, implementation, math	1900	x1525
847H	Load Testing greedy	1600	x2395
847G	University Classes implementation	900	x6745
847F	Berland Elections greedy, sortings	2100	x865
847E	Packmen binary search, dp	1800	x2971
847D	Dog Show constructive algorithms, data structures, greedy	2200	x1210
847C	Sum of Nestings constructive algorithms	1800	x2371
847B	Preparing for Merge Sort binary search, data structures	1600	x4970
847A	Union of Doubly Linked Lists implementation	1500	x3371
846F	Random Query data structures, math, probabilities, two pointers	1800	x2253
846E	Chemistry in Berland dfs and similar, greedy, trees	2300	x893
846D	Monitor binary search, data structures	1900	x2470
846C	Four Segments brute force, data structures, dp	1800	x2673
846B	Math Show brute force, greedy	1800	x2513
846A	Curriculum Vitae brute force, implementation	1500	x4250
845G	Shortest Path Problem? dfs and similar, graphs, math	2300	x1628
845F	Guards In The Storehouse bitmasks, dp	2500	x449
845E	Fire in the City binary search, data structures	2400	x597
845D	Driving Test data structures, dp, greedy	1800	x2377
845C	Two TVs data structures, greedy, sortings	1500	x8607
845B	Luba And The Ticket brute force, greedy, implementation	1600	x5026
845A	Chess Tourney implementation, sortings	1100	x7758
844B	Rectangles combinatorics, math	1300	x7388
844A	Diversity greedy, implementation, strings	1000	x10930
843E	Maximum Flow flows, graphs	3000	x319
843D	Dynamic Shortest Path graphs, shortest paths	3400	x849
843C	Upgrading Tree constructive algorithms, dfs and similar, graphs, math, trees	2600	x360
843B	Interactive LowerBound brute force, interactive, probabilities	2000	x2251
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5631
842E	Nikita and game binary search, dfs and similar, divide and conquer, graphs, trees	2800	x423
842D	Vitya and Strange Lesson binary search, data structures	2000	x3659
842C	Ilya And The Tree dfs and similar, graphs, math, number theory, trees	2000	x3483
842B	Gleb And Pizza geometry	1100	x10329
842A	Kirill And The Game brute force, two pointers	1200	x10180
841B	Godsend games, math	1100	x12266
841A	Generous Kefa brute force, implementation	900	x13149
840E	In a Trap trees	3200	x471
840D	Destiny data structures, probabilities	2500	x3007
840C	On the Bench combinatorics, dp	2500	x1739
840B	Leha and another game about graph constructive algorithms, data structures, dfs and similar, dp, graphs	2100	x2469
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6998
839E	Mother of Dragons brute force, graphs, math, meet-in-the-middle	2700	x913
839D	Winter is here combinatorics, dp, math, number theory	2200	x2911
839C	Journey dfs and similar, dp, graphs, probabilities, trees	1500	x16797
839B	Game of the Rows brute force, greedy, implementation	1900	x3324
839A	Arya and Bran implementation	900	x14144
838F	Expected Earnings	2800	x97
838E	Convex Countour dp	2300	x356
838D	Airplane Arrangements math, number theory	2700	x905
838C	Future Failure dp, games	2800	x295
838B	Diverging Directions data structures, dfs and similar, trees	2100	x795
838A	Binary Blocks brute force	1400	x923
837G	Functions On The Segments data structures	2500	x685
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x973
837E	Vasya's Function binary search, implementation, math	2100	x1779
837D	Round Subset dp, math	2100	x5478
837C	Two Seals brute force, implementation	1500	x4000
837B	Flag of Berland brute force, implementation	1600	x3933
837A	Text Volume implementation	800	x9399
835F	Roads in the Kingdom dfs and similar, dp, graphs, trees	2500	x1067
835E	The penguin's game binary search, constructive algorithms, interactive	2400	x1155
835D	Palindromic characteristics brute force, dp, hashing, strings	1900	x4120
835C	Star sky dp, implementation	1600	x7893
835B	The number on the board greedy	1100	x11035
835A	Key races math	800	x20186
834B	The Festive Evening data structures, implementation	1100	x8776
834A	The Useless Toy implementation	900	x8640
833E	Caramel Clouds data structures, dp, sortings	3400	x223
833D	Red-Black Cobweb data structures, divide and conquer, implementation, trees	2800	x392
833C	Ever-Hungry Krakozyabra brute force, combinatorics, greedy, math	2700	x472
833B	The Bakery binary search, data structures, divide and conquer, dp, two pointers	2200	x4937
833A	The Meaningless Game math, number theory	1700	x6186
832E	Vasya and Shifts matrices	2600	x330
832D	Misha, Grisha and Underground dfs and similar, graphs, trees	1900	x3771
832C	Strange Radiation binary search, implementation, math	2500	x452
832B	Petya and Exam implementation, strings	1600	x4379
832A	Sasha and Sticks games, math	800	x20708
831C	Jury Marks brute force, constructive algorithms	1700	x4542
831B	Keyboard Layouts implementation, strings	800	x14407
831A	Unimodal Array implementation	1000	x10269
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x277