Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round (Div. 3)
6 days

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1682A	Palindromic Indices greedy, strings	800	x19100
1681F	Unique Occurrences data structures, dfs and similar, divide and conquer, dp, dsu, trees	2300	x1592
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x712
1681D	Required Length brute force, dfs and similar, dp, hashing, shortest paths	1700	x9364
1681C	Double Sort implementation, sortings	1200	x17085
1681B	Card Trick implementation, math	800	x19898
1681A	Game with Cards games, greedy	800	x20809
1680F	Lenient Vertex Cover dfs and similar, divide and conquer, dsu, graphs, trees	2600	x636
1680E	Moving Chips bitmasks, dp, greedy	2000	x3668
1680D	Dog Walking brute force, greedy, math	2400	x1129
1680C	Binary String binary search, greedy, strings, two pointers	1600	x9616
1680B	Robots implementation	800	x18123
1680A	Minimums and Maximums brute force, math	800	x21081
1679F	Formalism for Formalism bitmasks, dp, math	2600	x507
1679E	Typical Party in Dorm bitmasks, combinatorics, dp, strings	2400	x1108
1679D	Toss a Coin to Your Graph... binary search, dfs and similar, dp, graphs	1900	x4617
1679C	Rooks Defenders data structures, implementation	1400	x10013
1679B	Stone Age Problem data structures, implementation	1200	x17343
1679A	AvtoBus brute force, greedy, math, number theory	900	x22492
1678B2	Tokitsukaze and Good 01-String (hard version) dp, greedy, implementation	1800	x6451
1678B1	Tokitsukaze and Good 01-String (easy version) implementation	800	x15751
1678A	Tokitsukaze and All Zero Sequence implementation	800	x17992
1677F	Tokitsukaze and Gems dp, math	3500	x88
1677E	Tokitsukaze and Beautiful Subsegments data structures	2900	x520
1677D	Tokitsukaze and Permutations dp, math	2500	x1222
1677C	Tokitsukaze and Two Colorful Tapes constructive algorithms, dfs and similar, graphs, greedy	1900	x3471
1677B	Tokitsukaze and Meeting data structures, implementation, math	1700	x4077
1677A	Tokitsukaze and Strange Inequality brute force, data structures, dp	1600	x8221
1676H2	Maximum Crossings (Hard Version) data structures, divide and conquer, sortings	1500	x10233
1676H1	Maximum Crossings (Easy Version) brute force	1400	x13488
1676G	White-Black Balanced Subtrees dfs and similar, dp, graphs, trees	1300	x14521
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x16060
1676E	Eating Queries binary search, greedy, sortings	1100	x25028
1676D	X-Sum brute force, greedy, implementation	1000	x24327
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x29131
1676B	Equal Candies greedy, math, sortings	800	x45978
1676A	Lucky? implementation	800	x59633
1675G	Sorting Pancakes dp	2300	x1618
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x5083
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x10263
1675D	Vertical Paths graphs, implementation, trees	1300	x12689
1675C	Detective Task implementation	1100	x17885
1675B	Make It Increasing greedy, implementation	900	x25314
1675A	Food for Animals greedy, math	800	x31866
1674G	Remove Directed Edges dfs and similar, dp, graphs	2000	x2412
1674F	Desktop Rearrangement data structures, greedy, implementation	1800	x4909
1674E	Breaking the Wall binary search, brute force, constructive algorithms, greedy, math	2000	x6217
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x15890
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x23065
1674B	Dictionary combinatorics, math	800	x25783
1674A	Number Transformation constructive algorithms, math	800	x25813
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x779
1673E	Power or XOR? bitmasks, combinatorics, math, number theory	2500	x670
1673D	Lost Arithmetic Progression combinatorics, math, number theory	1900	x3220
1673C	Palindrome Basis brute force, dp, math, number theory	1500	x12093
1673B	A Perfectly Balanced String? brute force, greedy, strings	1100	x14507
1673A	Subtle Substring Subtraction games, greedy, strings	800	x18282
1672I	PermutationForces data structures, greedy	3000	x159
1672H	Zigu Zagu constructive algorithms, data structures, greedy	2700	x918
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x316
1672F2	Checker for Array Shuffling constructive algorithms, dfs and similar, graphs	2800	x781
1672F1	Array Shuffling constructive algorithms, graphs, greedy	2000	x3007
1672E	notepad.exe binary search, constructive algorithms, greedy, interactive	2200	x2106
1672D	Cyclic Rotation constructive algorithms, greedy, implementation, two pointers	1700	x6055
1672C	Unequal Array constructive algorithms, greedy, implementation	1100	x13026
1672B	I love AAAB constructive algorithms, implementation	800	x15666
1672A	Log Chopping games, implementation, math	800	x15931
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x318
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x2664
1671D	Insert a Progression brute force, constructive algorithms, greedy	1600	x7393
1671C	Dolce Vita binary search, brute force, greedy, math	1200	x16231
1671B	Consecutive Points Segment brute force, math, sortings	1000	x18221
1671A	String Building implementation	800	x20245
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x925
1670E	Hemose on the Tree bitmasks, constructive algorithms, dfs and similar, trees	2200	x1691
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x4999
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x9596
1670B	Dorms War brute force, implementation, strings	1100	x12476
1670A	Prof. Slim greedy, implementation, sortings	800	x15278
1669H	Maximal AND bitmasks, greedy, math	1300	x16993
1669G	Fall Down dfs and similar, implementation	1200	x17600
1669F	Eating Candies binary search, data structures, greedy, two pointers	1100	x23783
1669E	2-Letter Strings data structures, math, strings	1200	x17190
1669D	Colorful Stamp implementation	1100	x21405
1669C	Odd/Even Increments greedy, greedy, implementation, math	800	x33344
1669B	Triple implementation, sortings	800	x40696
1669A	Division? implementation	800	x58542
1668B	Social Distance greedy, math, sortings	900	x16395
1668A	Direction Change implementation, math	800	x16190
1667F	Yin Yang implementation	3500	x93
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x632
1667D	Edge Elimination constructive algorithms, dfs and similar, dp, trees	2900	x646
1667C	Half Queen Cover constructive algorithms, math	2400	x1532
1667B	Optimal Partition data structures, dp	2100	x3526
1667A	Make it Increasing brute force, greedy, math	1300	x14472
1666L	Labyrinth dfs and similar, graphs	1800	x2998
1666K	Kingdom Partition flows	3200	x232
1666J	Job Lookup constructive algorithms, dp, shortest paths, trees	2100	x1298
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x1392
1666H	Heroes of Might math	3500	x61