Problemset - Codeforces

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
3 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
34D	Road Map dfs and similar, graphs	1600	x5223
34C	Page Numbers expression parsing, implementation, sortings, strings	1300	x4250
34B	Sale greedy, sortings	900	x53172
34A	Reconnaissance 2 implementation	800	x30104
33E	Helper	2600	x131
33D	Knights geometry, graphs, shortest paths, sortings	2000	x1216
33C	Wonderful Randomized Sum greedy	1800	x3028
33B	String Problem shortest paths	1800	x4604
33A	What is for dinner? greedy, implementation	1200	x4098
32E	Hide-and-Seek geometry, implementation	2400	x337
32D	Constellation implementation	1600	x1289
32C	Flea math	1700	x2176
32B	Borze expression parsing, implementation	800	x64707
32A	Reconnaissance brute force	800	x12642
31E	TV Game dp	2400	x1104
31D	Chocolate dfs and similar, implementation	2000	x1048
31C	Schedule implementation	1700	x1827
31B	Sysadmin Bob greedy, implementation, strings	1500	x4347
31A	Worms Evolution implementation	1200	x10404
30E	Tricky and Clever Password binary search, constructive algorithms, data structures, greedy, hashing, strings	2800	x744
30D	King's Problem? geometry, greedy	2600	x453
30C	Shooting Gallery dp, probabilities	1800	x1975
30B	Codeforces World Finals implementation	1700	x1204
30A	Accounting brute force, math	1400	x3482
29E	Quarrel graphs, shortest paths	2400	x927
29D	Ant on the Tree constructive algorithms, dfs and similar, trees	2000	x2482
29C	Mail Stamps data structures, dfs and similar, graphs, implementation	1700	x5005
29B	Traffic Lights implementation	1500	x2990
29A	Spit Problem brute force	1000	x7123
28E	DravDe saves the world geometry, math	2800	x91
28D	Don't fear, DravDe is kind binary search, data structures, dp, hashing	2400	x617
28C	Bath Queue combinatorics, dp, probabilities	2200	x1057
28B	pSort dfs and similar, dsu, graphs	1600	x4711
28A	Bender Problem implementation	1600	x801
27E	Number With The Given Amount Of Divisors brute force, dp, number theory	2000	x4253
27D	Ring Road 2 2-sat, dfs and similar, dsu, graphs	2200	x2549
27C	Unordered Subsequence constructive algorithms, greedy	1900	x2814
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5384
27A	Next Test implementation, sortings	1200	x20485
26E	Multithreading constructive algorithms	2400	x376
26D	Tickets combinatorics, math, probabilities	2400	x800
26C	Parquet combinatorics, constructive algorithms, greedy, implementation	2000	x863
26B	Regular Bracket Sequence greedy	1400	x19760
26A	Almost Prime number theory	900	x31945
25E	Test hashing, strings	2200	x2511
25D	Roads not only in Berland dsu, graphs, trees	1900	x11560
25C	Roads in Berland graphs, shortest paths	1900	x6392
25B	Phone numbers implementation	1100	x9742
25A	IQ test brute force	1300	x87293
24E	Berland collider binary search	2300	x902
24D	Broken robot dp, math, probabilities	2400	x1991
24C	Sequence of points geometry, implementation, math	1800	x1263
24B	F1 Champions implementation	1500	x1787
24A	Ring road graphs	1400	x5241
23E	Tree dp	2500	x620
23D	Tetragon geometry, math	2600	x337
23C	Oranges and Apples constructive algorithms, sortings	2500	x1430
23B	Party constructive algorithms, graphs, math	1600	x3378
23A	You're Given a String... brute force, greedy	1200	x5370
22E	Scheme dfs and similar, graphs, trees	2300	x1671
22D	Segments greedy, sortings	1900	x2755
22C	System Administrator graphs	1700	x3149
22B	Bargaining Table brute force, dp	1500	x4247
22A	Second Order Statistics brute force	800	x22571
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x908
21C	Stripe 2 binary search, dp, sortings	2000	x2153
21B	Intersection implementation, math	2000	x1359
21A	Jabber ID implementation, strings	1900	x1885
20C	Dijkstra? graphs, shortest paths	1900	x33382
20B	Equation math	2000	x3919
20A	BerOS file system implementation	1700	x6249
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x1894
19D	Points data structures	2800	x2462
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1108
19B	Checkout Assistant dp	1900	x4863
19A	World Football Cup implementation	1400	x2765
18E	Flag 2 dp	2000	x1090
18D	Seller Bob brute force, dp, greedy	2000	x1077
18C	Stripe data structures, implementation	1200	x13301
18B	Platforms brute force, math	1700	x2152
18A	Triangle brute force, geometry	1500	x6099
17E	Palisection strings	2900	x1600
17D	Notepad number theory	2400	x1098
17C	Balance dp	2500	x934
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x4910
17A	Noldbach problem brute force, math, number theory	1000	x16778
16E	Fish bitmasks, dp, probabilities	1900	x5199
16D	Logging implementation, strings	1900	x1614
16C	Monitor binary search, number theory	1800	x4796
16B	Burglar and Matches greedy, implementation, sortings	900	x18188
16A	Flag implementation	800	x14489
15E	Triangles combinatorics, dp	2600	x588
15D	Map data structures, implementation, sortings	2500	x770
15C	Industrial Nim games	2000	x2328
15B	Laser math	1800	x1476
15A	Cottage Village implementation, sortings	1200	x3934
14E	Camels dp	1900	x1716
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x4593
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3404
14B	Young Photographer implementation	1000	x7112