Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
1680F	Lenient Vertex Cover dfs and similar, divide and conquer, dsu, graphs, trees	2600	x665
1680E	Moving Chips bitmasks, dp, greedy	2000	x3791
1680D	Dog Walking brute force, greedy, math	2400	x1167
1680C	Binary String binary search, greedy, strings, two pointers	1600	x9927
1680B	Robots implementation	800	x18309
1680A	Minimums and Maximums brute force, math	800	x21570
1679F	Formalism for Formalism bitmasks, dp, math	2600	x541
1679E	Typical Party in Dorm bitmasks, combinatorics, dp, strings	2400	x1180
1679D	Toss a Coin to Your Graph... binary search, dfs and similar, dp, graphs	1900	x4842
1679C	Rooks Defenders data structures, implementation	1400	x10312
1679B	Stone Age Problem data structures, implementation	1200	x18483
1679A	AvtoBus brute force, greedy, math, number theory	900	x24165
1678B2	Tokitsukaze and Good 01-String (hard version) dp, greedy, implementation	1800	x6609
1678B1	Tokitsukaze and Good 01-String (easy version) implementation	800	x15925
1678A	Tokitsukaze and All Zero Sequence implementation	800	x18145
1677F	Tokitsukaze and Gems dp, math	3500	x93
1677E	Tokitsukaze and Beautiful Subsegments data structures	2900	x551
1677D	Tokitsukaze and Permutations dp, math	2500	x1257
1677C	Tokitsukaze and Two Colorful Tapes constructive algorithms, dfs and similar, graphs, greedy	1900	x3592
1677B	Tokitsukaze and Meeting data structures, implementation, math	1700	x4177
1677A	Tokitsukaze and Strange Inequality brute force, data structures, dp	1600	x8432
1676H2	Maximum Crossings (Hard Version) data structures, divide and conquer, sortings	1500	x10746
1676H1	Maximum Crossings (Easy Version) brute force	1400	x14037
1676G	White-Black Balanced Subtrees dfs and similar, dp, graphs, trees	1300	x15687
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x16718
1676E	Eating Queries binary search, greedy, sortings	1100	x26339
1676D	X-Sum brute force, greedy, implementation	1000	x25158
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x30133
1676B	Equal Candies greedy, math, sortings	800	x48378
1676A	Lucky? implementation	800	x63814
1675G	Sorting Pancakes dp	2300	x1773
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x5328
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x10629
1675D	Vertical Paths graphs, implementation, trees	1300	x13076
1675C	Detective Task implementation	1100	x18219
1675B	Make It Increasing greedy, implementation	900	x27064
1675A	Food for Animals greedy, math	800	x32966
1674G	Remove Directed Edges dfs and similar, dp, graphs	2000	x2498
1674F	Desktop Rearrangement data structures, greedy, implementation	1800	x5053
1674E	Breaking the Wall binary search, brute force, constructive algorithms, greedy, math	2000	x6420
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x16340
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x23609
1674B	Dictionary combinatorics, math	800	x26299
1674A	Number Transformation constructive algorithms, math	800	x26265
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x822
1673E	Power or XOR? bitmasks, combinatorics, math, number theory	2500	x709
1673D	Lost Arithmetic Progression combinatorics, math, number theory	1900	x3310
1673C	Palindrome Basis brute force, dp, math, number theory	1500	x12745
1673B	A Perfectly Balanced String? brute force, greedy, strings	1100	x15209
1673A	Subtle Substring Subtraction games, greedy, strings	800	x18438
1672I	PermutationForces data structures, greedy	3000	x172
1672H	Zigu Zagu constructive algorithms, data structures, greedy	2700	x948
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x323
1672F2	Checker for Array Shuffling constructive algorithms, dfs and similar, graphs	2800	x806
1672F1	Array Shuffling constructive algorithms, graphs, greedy	2000	x3088
1672E	notepad.exe binary search, constructive algorithms, greedy, interactive	2200	x2239
1672D	Cyclic Rotation constructive algorithms, greedy, implementation, two pointers	1700	x6229
1672C	Unequal Array constructive algorithms, greedy, implementation	1100	x13224
1672B	I love AAAB constructive algorithms, implementation	800	x15831
1672A	Log Chopping games, implementation, math	800	x16071
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x332
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x2743
1671D	Insert a Progression brute force, constructive algorithms, greedy	1600	x7653
1671C	Dolce Vita binary search, brute force, greedy, math	1200	x17200
1671B	Consecutive Points Segment brute force, math, sortings	1000	x18534
1671A	String Building implementation	800	x20455
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x975
1670E	Hemose on the Tree bitmasks, constructive algorithms, dfs and similar, trees	2200	x1753
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x5137
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x9956
1670B	Dorms War brute force, implementation, strings	1100	x12710
1670A	Prof. Slim greedy, implementation, sortings	800	x15423
1669H	Maximal AND bitmasks, greedy, math	1300	x18612
1669G	Fall Down dfs and similar, implementation	1200	x18282
1669F	Eating Candies binary search, data structures, greedy, two pointers	1100	x25858
1669E	2-Letter Strings data structures, math, strings	1200	x17886
1669D	Colorful Stamp implementation	1100	x22215
1669C	Odd/Even Increments greedy, greedy, implementation, math	800	x34679
1669B	Triple implementation, sortings	800	x43192
1669A	Division? implementation	800	x62980
1668B	Social Distance greedy, math, sortings	900	x16650
1668A	Direction Change implementation, math	800	x16303
1667F	Yin Yang implementation	3500	x99
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x651
1667D	Edge Elimination constructive algorithms, dfs and similar, dp, trees	2900	x663
1667C	Half Queen Cover constructive algorithms, math	2400	x1580
1667B	Optimal Partition data structures, dp	2100	x3695
1667A	Make it Increasing brute force, greedy, math	1300	x14700
1666L	Labyrinth dfs and similar, graphs	1800	x3110
1666K	Kingdom Partition flows	3200	x244
1666J	Job Lookup constructive algorithms, dp, shortest paths, trees	2100	x1330
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x1449
1666H	Heroes of Might math	3500	x67
1666G	Global Warming geometry, math	3100	x136
1666F	Fancy Stack combinatorics, dp, implementation	2200	x1159
1666E	Even Split binary search, constructive algorithms, greedy, math	2500	x721
1666D	Deletive Editing greedy	900	x8520
1666C	Connect the Points brute force, constructive algorithms, geometry	1800	x3178
1666B	Budget Distribution	3300	x54
1666A	Admissible Map	3300	x110