Problemset - Codeforces

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Codeforces Round (Div. 2)
5 days

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Problems

#	Name
25E	Test hashing, strings	2200	x3175
25D	Roads not only in Berland dsu, graphs, trees	1900	x15712
25C	Roads in Berland graphs, shortest paths	1900	x8126
25B	Phone numbers implementation	1100	x11290
25A	IQ test brute force	1300	x104307
24E	Berland collider binary search	2300	x1028
24D	Broken robot dp, math, probabilities	2400	x2679
24C	Sequence of points geometry, implementation, math	1800	x1454
24B	F1 Champions implementation	1500	x2048
24A	Ring road graphs	1400	x6952
23E	Tree dp	2500	x730
23D	Tetragon geometry, math	2600	x382
23C	Oranges and Apples constructive algorithms, sortings	2500	x1702
23B	Party constructive algorithms, graphs, math	1600	x3879
23A	You're Given a String... brute force, greedy	1200	x6338
22E	Scheme dfs and similar, graphs, trees	2300	x2096
22D	Segments greedy, sortings	1900	x3429
22C	System Administrator graphs	1700	x3834
22B	Bargaining Table brute force, dp	1500	x4797
22A	Second Order Statistics brute force	800	x27292
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x1302
21C	Stripe 2 binary search, dp, sortings	2000	x2544
21B	Intersection implementation, math	2000	x1592
21A	Jabber ID implementation, strings	1900	x2282
20C	Dijkstra? graphs, shortest paths	1900	x47469
20B	Equation math	2000	x4821
20A	BerOS file system implementation	1700	x7147
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x2525
19D	Points data structures	2800	x3198
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1343
19B	Checkout Assistant dp	1900	x5855
19A	World Football Cup implementation	1400	x3150
18E	Flag 2 dp	2000	x1272
18D	Seller Bob brute force, dp, greedy	2000	x1296
18C	Stripe data structures, implementation	1200	x15465
18B	Platforms brute force, math	1700	x2433
18A	Triangle brute force, geometry	1500	x6978
17E	Palisection strings	2900	x2001
17D	Notepad number theory	2400	x1333
17C	Balance dp	2500	x1031
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x6181
17A	Noldbach problem brute force, math, number theory	1000	x21495
16E	Fish bitmasks, dp, probabilities	1900	x6577
16D	Logging implementation, strings	1900	x1868
16C	Monitor binary search, number theory	1800	x5431
16B	Burglar and Matches greedy, implementation, sortings	900	x20833
16A	Flag implementation	800	x17326
15E	Triangles combinatorics, dp	2600	x674
15D	Map data structures, implementation, sortings	2500	x923
15C	Industrial Nim games	2000	x2864
15B	Laser math	1800	x1681
15A	Cottage Village implementation, sortings	1200	x4504
14E	Camels dp	1900	x2093
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x5295
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3867
14B	Young Photographer implementation	1000	x8329
14A	Letter implementation	800	x12450
13E	Holes data structures, dsu	2700	x8070
13D	Triangles dp, geometry	2600	x736
13C	Sequence dp, sortings	2200	x5493
13B	Letter A geometry, implementation	2000	x1126
13A	Numbers implementation, math	1000	x9476
12E	Start of the session constructive algorithms	2100	x1455
12D	Ball data structures, sortings	2400	x2903
12C	Fruits greedy, implementation, sortings	1100	x7367
12B	Correct Solution? implementation, sortings	1100	x9692
12A	Super Agent implementation	800	x15472
11E	Forward, march! binary search, dp, greedy	2800	x441
11D	A Simple Task bitmasks, dp, graphs	2200	x6457
11C	How Many Squares? implementation	2200	x696
11B	Jumping Jack math	1600	x5730
11A	Increasing Sequence constructive algorithms, implementation, math	900	x15529
10E	Greedy Change constructive algorithms	2600	x931
10D	LCIS dp	2800	x5661
10C	Digital Root number theory	2000	x1713
10B	Cinema Cashier dp, implementation	1500	x2067
10A	Power Consumption Calculation implementation	900	x8372
9E	Interestring graph and Apples dfs and similar, dsu, graphs	2300	x1165
9D	How many trees? combinatorics, divide and conquer, dp	1900	x4521
9C	Hexadecimal's Numbers brute force, implementation, math	1200	x14383
9B	Running Student brute force, geometry, implementation	1200	x6203
9A	Die Roll math, probabilities	800	x70047
8E	Beads dp, graphs	2600	x760
8D	Two Friends binary search, geometry	2600	x581
8C	Looking for Order bitmasks, dp	2000	x4234
8B	Obsession with Robots constructive algorithms, graphs, implementation	1400	x4985
8A	Train and Peter strings	1200	x6750
7E	Defining Macros dp, expression parsing, implementation	2600	x782
7D	Palindrome Degree hashing, strings	2200	x4535
7C	Line math, number theory	1800	x5499
7B	Memory Manager implementation	1600	x2962
7A	Kalevitch and Chess brute force, constructive algorithms	1100	x8038
6E	Exposition binary search, data structures, dsu, trees, two pointers	1900	x3893
6D	Lizards and Basements 2 brute force, dp	2600	x2283
6C	Alice, Bob and Chocolate greedy, two pointers	1200	x17567
6B	President's Office implementation	1100	x14871
6A	Triangle brute force, geometry	900	x22925
5E	Bindian Signalizing data structures	2400	x2501
5D	Follow Traffic Rules implementation, math	2100	x1943
5C	Longest Regular Bracket Sequence constructive algorithms, data structures, dp, greedy, sortings, strings	1900	x18219

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