Problemset - Codeforces

Please subscribe to the official Codeforces channel in Telegram via the link https://t.me/codeforces_official. ×

→ Pay attention

Before contest
Codeforces Round (Div. 2)
29:03:04
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
36E	Two Paths constructive algorithms, dsu, graphs, implementation	2600	x502
36D	New Game with a Chess Piece games	2300	x688
36C	Bowls geometry, implementation	2200	x332
36B	Fractal implementation	1600	x1451
36A	Extra-terrestrial Intelligence implementation	1300	x2947
35E	Parade data structures, sortings	2100	x720
35D	Animals dp, greedy	1700	x3230
35C	Fire Again brute force, dfs and similar, shortest paths	1500	x6625
35B	Warehouse implementation	1700	x999
35A	Shell Game implementation	1000	x6710
34E	Collisions brute force, implementation, math	2000	x574
34D	Road Map dfs and similar, graphs	1600	x4963
34C	Page Numbers expression parsing, implementation, sortings, strings	1300	x4139
34B	Sale greedy, sortings	900	x50325
34A	Reconnaissance 2 implementation	800	x29118
33E	Helper	2600	x126
33D	Knights geometry, graphs, shortest paths, sortings	2000	x1151
33C	Wonderful Randomized Sum greedy	1800	x2933
33B	String Problem shortest paths	1800	x4311
33A	What is for dinner? greedy, implementation	1200	x3961
32E	Hide-and-Seek geometry, implementation	2400	x327
32D	Constellation implementation	1600	x1256
32C	Flea math	1700	x2099
32B	Borze expression parsing, implementation	800	x61256
32A	Reconnaissance brute force	800	x12230
31E	TV Game dp	2400	x1050
31D	Chocolate dfs and similar, implementation	2000	x1016
31C	Schedule implementation	1700	x1763
31B	Sysadmin Bob greedy, implementation, strings	1500	x4187
31A	Worms Evolution implementation	1200	x10103
30E	Tricky and Clever Password binary search, constructive algorithms, data structures, greedy, hashing, strings	2800	x692
30D	King's Problem? geometry, greedy	2600	x424
30C	Shooting Gallery dp, probabilities	1800	x1904
30B	Codeforces World Finals implementation	1700	x1165
30A	Accounting brute force, math	1400	x3391
29E	Quarrel graphs, shortest paths	2400	x879
29D	Ant on the Tree constructive algorithms, dfs and similar, trees	2000	x2385
29C	Mail Stamps data structures, dfs and similar, graphs, implementation	1700	x4735
29B	Traffic Lights implementation	1500	x2902
29A	Spit Problem brute force	1000	x6953
28E	DravDe saves the world geometry, math	2800	x87
28D	Don't fear, DravDe is kind binary search, data structures, dp, hashing	2400	x599
28C	Bath Queue combinatorics, dp, probabilities	2200	x1008
28B	pSort dfs and similar, dsu, graphs	1600	x4503
28A	Bender Problem implementation	1600	x779
27E	Number With The Given Amount Of Divisors brute force, dp, number theory	2000	x4076
27D	Ring Road 2 2-sat, dfs and similar, dsu, graphs	2200	x2402
27C	Unordered Subsequence constructive algorithms, greedy	1900	x2742
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5262
27A	Next Test implementation, sortings	1200	x19790
26E	Multithreading constructive algorithms	2400	x368
26D	Tickets combinatorics, math, probabilities	2400	x768
26C	Parquet combinatorics, constructive algorithms, greedy, implementation	2000	x839
26B	Regular Bracket Sequence greedy	1400	x18315
26A	Almost Prime number theory	900	x29869
25E	Test hashing, strings	2200	x2308
25D	Roads not only in Berland dsu, graphs, trees	1900	x10764
25C	Roads in Berland graphs, shortest paths	1900	x6032
25B	Phone numbers implementation	1100	x9512
25A	IQ test brute force	1300	x83532
24E	Berland collider binary search	2300	x875
24D	Broken robot dp, math, probabilities	2400	x1862
24C	Sequence of points geometry, implementation, math	1800	x1227
24B	F1 Champions implementation	1500	x1748
24A	Ring road graphs	1400	x4941
23E	Tree dp	2500	x597
23D	Tetragon geometry, math	2600	x330
23C	Oranges and Apples constructive algorithms, sortings	2500	x1386
23B	Party constructive algorithms, graphs, math	1600	x3261
23A	You're Given a String... brute force, greedy	1200	x5176
22E	Scheme dfs and similar, graphs, trees	2300	x1579
22D	Segments greedy, sortings	1900	x2656
22C	System Administrator graphs	1700	x3027
22B	Bargaining Table brute force, dp	1500	x4145
22A	Second Order Statistics brute force	800	x21501
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x849
21C	Stripe 2 binary search, dp, sortings	2000	x2065
21B	Intersection implementation, math	2000	x1321
21A	Jabber ID implementation, strings	1900	x1808
20C	Dijkstra? graphs, shortest paths	1900	x31429
20B	Equation math	2000	x3757
20A	BerOS file system implementation	1700	x6075
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x1745
19D	Points data structures	2800	x2211
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1077
19B	Checkout Assistant dp	1900	x4578
19A	World Football Cup implementation	1400	x2690
18E	Flag 2 dp	2000	x1035
18D	Seller Bob brute force, dp, greedy	2000	x1044
18C	Stripe data structures, implementation	1200	x12769
18B	Platforms brute force, math	1700	x2095
18A	Triangle brute force, geometry	1500	x5816
17E	Palisection strings	2900	x1537
17D	Notepad number theory	2400	x1049
17C	Balance dp	2500	x829
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x4638
17A	Noldbach problem brute force, math, number theory	1000	x15722
16E	Fish bitmasks, dp, probabilities	1900	x4857
16D	Logging implementation, strings	1900	x1538
16C	Monitor binary search, number theory	1800	x4638