Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
33D	Knights geometry, graphs, shortest paths, sortings	2000	x1247
33C	Wonderful Randomized Sum greedy	1800	x3085
33B	String Problem shortest paths	1800	x4706
33A	What is for dinner? greedy, implementation	1200	x4203
32E	Hide-and-Seek geometry, implementation	2400	x346
32D	Constellation implementation	1600	x1301
32C	Flea math	1700	x2199
32B	Borze expression parsing, implementation	800	x66860
32A	Reconnaissance brute force	800	x12957
31E	TV Game dp	2400	x1124
31D	Chocolate dfs and similar, implementation	2000	x1052
31C	Schedule implementation	1700	x1848
31B	Sysadmin Bob greedy, implementation, strings	1500	x4387
31A	Worms Evolution implementation	1200	x10536
30E	Tricky and Clever Password binary search, constructive algorithms, data structures, greedy, hashing, strings	2800	x752
30D	King's Problem? geometry, greedy	2600	x458
30C	Shooting Gallery dp, probabilities	1800	x2005
30B	Codeforces World Finals implementation	1700	x1216
30A	Accounting brute force, math	1400	x3542
29E	Quarrel graphs, shortest paths	2400	x943
29D	Ant on the Tree constructive algorithms, dfs and similar, trees	2000	x2523
29C	Mail Stamps data structures, dfs and similar, graphs, implementation	1700	x5162
29B	Traffic Lights implementation	1500	x3020
29A	Spit Problem brute force	1000	x7271
28E	DravDe saves the world geometry, math	2800	x94
28D	Don't fear, DravDe is kind binary search, data structures, dp, hashing	2400	x622
28C	Bath Queue combinatorics, dp, probabilities	2200	x1073
28B	pSort dfs and similar, dsu, graphs	1600	x4794
28A	Bender Problem implementation	1600	x814
27E	Number With The Given Amount Of Divisors brute force, dp, number theory	2000	x4317
27D	Ring Road 2 2-sat, dfs and similar, dsu, graphs	2200	x2601
27C	Unordered Subsequence constructive algorithms, greedy	1900	x2833
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5443
27A	Next Test implementation, sortings	1200	x20778
26E	Multithreading constructive algorithms	2400	x383
26D	Tickets combinatorics, math, probabilities	2400	x811
26C	Parquet combinatorics, constructive algorithms, greedy, implementation	2000	x875
26B	Regular Bracket Sequence greedy	1400	x20275
26A	Almost Prime number theory	900	x33042
25E	Test hashing, strings	2200	x2565
25D	Roads not only in Berland dsu, graphs, trees	1900	x11858
25C	Roads in Berland graphs, shortest paths	1900	x6485
25B	Phone numbers implementation	1100	x9913
25A	IQ test brute force	1300	x89405
24E	Berland collider binary search	2300	x921
24D	Broken robot dp, math, probabilities	2400	x2026
24C	Sequence of points geometry, implementation, math	1800	x1272
24B	F1 Champions implementation	1500	x1813
24A	Ring road graphs	1400	x5391
23E	Tree dp	2500	x641
23D	Tetragon geometry, math	2600	x339
23C	Oranges and Apples constructive algorithms, sortings	2500	x1445
23B	Party constructive algorithms, graphs, math	1600	x3431
23A	You're Given a String... brute force, greedy	1200	x5511
22E	Scheme dfs and similar, graphs, trees	2300	x1729
22D	Segments greedy, sortings	1900	x2809
22C	System Administrator graphs	1700	x3232
22B	Bargaining Table brute force, dp	1500	x4293
22A	Second Order Statistics brute force	800	x23100
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x932
21C	Stripe 2 binary search, dp, sortings	2000	x2186
21B	Intersection implementation, math	2000	x1380
21A	Jabber ID implementation, strings	1900	x1902
20C	Dijkstra? graphs, shortest paths	1900	x34514
20B	Equation math	2000	x4017
20A	BerOS file system implementation	1700	x6349
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x2034
19D	Points data structures	2800	x2533
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1124
19B	Checkout Assistant dp	1900	x4992
19A	World Football Cup implementation	1400	x2821
18E	Flag 2 dp	2000	x1124
18D	Seller Bob brute force, dp, greedy	2000	x1088
18C	Stripe data structures, implementation	1200	x13509
18B	Platforms brute force, math	1700	x2175
18A	Triangle brute force, geometry	1500	x6214
17E	Palisection strings	2900	x1616
17D	Notepad number theory	2400	x1119
17C	Balance dp	2500	x948
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x5046
17A	Noldbach problem brute force, math, number theory	1000	x17282
16E	Fish bitmasks, dp, probabilities	1900	x5357
16D	Logging implementation, strings	1900	x1641
16C	Monitor binary search, number theory	1800	x4876
16B	Burglar and Matches greedy, implementation, sortings	900	x18492
16A	Flag implementation	800	x14851
15E	Triangles combinatorics, dp	2600	x593
15D	Map data structures, implementation, sortings	2500	x782
15C	Industrial Nim games	2000	x2377
15B	Laser math	1800	x1488
15A	Cottage Village implementation, sortings	1200	x3981
14E	Camels dp	1900	x1740
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x4659
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3448
14B	Young Photographer implementation	1000	x7204
14A	Letter implementation	800	x10926
13E	Holes data structures, dsu	2700	x6311
13D	Triangles dp, geometry	2600	x670
13C	Sequence dp, sortings	2200	x4782
13B	Letter A geometry, implementation	2000	x1011