Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9652
804A	Find Amir constructive algorithms, greedy, math	1000	x15445
803G	Periodic RMQ Problem data structures	2300	x1566
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x3246
803E	Roma and Poker dp, graphs	2000	x2202
803D	Magazine Ad binary search, greedy	1900	x3255
803C	Maximal GCD constructive algorithms, greedy, math	1900	x5105
803B	Distances to Zero constructive algorithms	1200	x6561
803A	Maximal Binary Matrix constructive algorithms	1400	x4870
802O	April Fools' Problem (hard) binary search, data structures, flows	2900	x940
802N	April Fools' Problem (medium) binary search, flows, graphs	2400	x1189
802M	April Fools' Problem (easy) greedy, sortings	1200	x3121
802L	Send the Fool Further! (hard) dfs and similar, dp, math, trees	2400	x303
802K	Send the Fool Further! (medium) dp, trees	2100	x638
802J	Send the Fool Further! (easy) dfs and similar, graphs, trees	1400	x4611
802I	Fake News (hard) string suffix structures	2300	x1537
802H	Fake News (medium) constructive algorithms, strings	2200	x453
802G	Fake News (easy) implementation, strings	800	x6979
802F	Marmots (hard) math, probabilities	2800	x127
802E	Marmots (medium) math	2200	x253
802D	Marmots (easy) math	2100	x457
802C	Heidi and Library (hard) flows	2600	x561
802B	Heidi and Library (medium) data structures, greedy	1800	x1120
802A	Heidi and Library (easy) greedy	1800	x1368
801B	Valued Keys constructive algorithms, greedy, strings	900	x10276
801A	Vicious Keyboard brute force	1100	x7310
799G	Cut the pie binary search, data structures, geometry	3500	x116
799F	Beautiful fountains rows data structures	3500	x444
799E	Aquarium decoration data structures, greedy, two pointers	2500	x931
799D	Field expansion brute force, dp, meet-in-the-middle	2100	x2033
799C	Fountains binary search, data structures, implementation	1800	x3768
799B	T-shirt buying data structures, implementation	1400	x8789
799A	Carrot Cakes brute force, implementation	1100	x18825
798E	Mike and code of a permutation constructive algorithms, data structures, graphs, sortings	3000	x482
798D	Mike and distribution constructive algorithms, sortings	2400	x1908
798C	Mike and gcd problem dp, greedy, number theory	1700	x5805
798B	Mike and strings brute force, dp, strings	1300	x8388
798A	Mike and palindrome brute force, constructive algorithms, strings	1000	x21742
797F	Mice and Holes data structures, dp, greedy, sortings	2600	x1195
797E	Array Queries brute force, data structures, dp	2000	x4403
797D	Broken BST data structures, dfs and similar	2100	x1823
797C	Minimal string data structures, greedy, strings	1700	x6739
797B	Odd sum dp, greedy, implementation	1400	x10533
797A	k-Factorization implementation, math, number theory	1100	x15326
796F	Sequence Recovery bitmasks, data structures, greedy	2800	x181
796E	Exam Cheating binary search, dp	2400	x654
796D	Police Stations constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees	2100	x5681
796C	Bank Hacking constructive algorithms, data structures, dp, trees	1900	x3041
796B	Find The Bone implementation	1300	x9068
796A	Buying A House brute force, implementation	800	x13012
794G	Replace All combinatorics, dp, math	3400	x343
794F	Leha and security system data structures	2800	x826
794E	Choosing Carrot games, math	2800	x800
794D	Labelling Cities dfs and similar, graphs, hashing	2400	x814
794C	Naming Company games, greedy, sortings	1800	x3115
794B	Cutting Carrot geometry, math	1200	x6525
794A	Bank Robbery brute force, implementation	800	x7007
793G	Oleg and chess data structures, divide and conquer, flows, graph matchings	3400	x386
793F	Julia the snail data structures, divide and conquer, dp	3000	x550
793E	Problem of offices constructive algorithms, dfs and similar, dp, trees	2900	x254
793D	Presents in Bankopolis dp, graphs, shortest paths	2100	x1599
793C	Mice problem geometry, implementation, math, sortings	2300	x1256
793B	Igor and his way to work dfs and similar, graphs, implementation, shortest paths	1600	x4433
793A	Oleg and shares implementation, math	900	x6781
792F	Mages and Monsters data structures, geometry	3100	x209
792E	Colored Balls greedy, math, number theory	2500	x1083
792D	Paths in a Complete Binary Tree bitmasks, trees	1900	x3011
792C	Divide by Three dp, greedy, math, number theory	2000	x4392
792B	Counting-out Rhyme implementation	1300	x6010
792A	New Bus Route implementation, sortings	1100	x8950
791A	Bear and Big Brother implementation	800	x193952
789B	Masha and geometric depression brute force, implementation, math	1700	x4380
789A	Anastasia and pebbles implementation, math	1100	x9318
788E	New task data structures	2900	x340
788D	Finding lines constructive algorithms, divide and conquer, interactive	3000	x370
788C	The Great Mixing dfs and similar, graphs, shortest paths	2300	x2264
788B	Weird journey combinatorics, constructive algorithms, dfs and similar, dsu, graphs	2100	x2557
788A	Functions again dp, two pointers	1600	x9093
787B	Not Afraid greedy, implementation, math	1300	x5605
787A	The Monster brute force, math, number theory	1200	x11357
786E	ALT data structures, flows, graphs, trees	3200	x629
786D	Rap God data structures, dfs and similar, hashing, strings, trees	3400	x142
786C	Till I Collapse data structures, divide and conquer	2400	x2838
786B	Legacy data structures, graphs, shortest paths	2300	x6039
786A	Berzerk dfs and similar, dp, games	2000	x2544
785E	Anton and Permutation brute force, data structures	2200	x1909
785D	Anton and School - 2 combinatorics, dp, math, number theory	2300	x2976
785C	Anton and Fairy Tale binary search, math	1600	x7364
785B	Anton and Classes greedy, sortings	1100	x10231
785A	Anton and Polyhedrons implementation, strings	800	x88630
784G	BF Calculator *special problem	2000	x747
784F	Crunching Numbers Just for You *special problem, implementation	1900	x1073
784E	Twisted Circuit *special problem, brute force, implementation	2000	x1949
784D	Touchy-Feely Palindromes *special problem, implementation	1900	x460
784C	INTERCALC *special problem, implementation	1800	x726
784B	Kids' Riddle *special problem	2000	x872
784A	Numbers Joke *special problem	1700	x3180
780H	Intranet of Buses binary search, geometry, implementation, two pointers	3100	x118
780G	Andryusha and Nervous Barriers data structures, dp	2700	x657
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1050