Problemset - Codeforces

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Problems

#	Name
26D	Tickets combinatorics, math, probabilities	2400	x801
26C	Parquet combinatorics, constructive algorithms, greedy, implementation	2000	x863
26B	Regular Bracket Sequence greedy	1400	x19768
26A	Almost Prime number theory	900	x31959
25E	Test hashing, strings	2200	x2512
25D	Roads not only in Berland dsu, graphs, trees	1900	x11567
25C	Roads in Berland graphs, shortest paths	1900	x6396
25B	Phone numbers implementation	1100	x9743
25A	IQ test brute force	1300	x87328
24E	Berland collider binary search	2300	x902
24D	Broken robot dp, math, probabilities	2400	x1993
24C	Sequence of points geometry, implementation, math	1800	x1264
24B	F1 Champions implementation	1500	x1787
24A	Ring road graphs	1400	x5242
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	x5371
22E	Scheme dfs and similar, graphs, trees	2300	x1671
22D	Segments greedy, sortings	1900	x2756
22C	System Administrator graphs	1700	x3149
22B	Bargaining Table brute force, dp	1500	x4250
22A	Second Order Statistics brute force	800	x22581
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x908
21C	Stripe 2 binary search, dp, sortings	2000	x2154
21B	Intersection implementation, math	2000	x1359
21A	Jabber ID implementation, strings	1900	x1885
20C	Dijkstra? graphs, shortest paths	1900	x33390
20B	Equation math	2000	x3925
20A	BerOS file system implementation	1700	x6265
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x1895
19D	Points data structures	2800	x2465
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1108
19B	Checkout Assistant dp	1900	x4863
19A	World Football Cup implementation	1400	x2770
18E	Flag 2 dp	2000	x1090
18D	Seller Bob brute force, dp, greedy	2000	x1077
18C	Stripe data structures, implementation	1200	x13306
18B	Platforms brute force, math	1700	x2152
18A	Triangle brute force, geometry	1500	x6100
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	x4911
17A	Noldbach problem brute force, math, number theory	1000	x16796
16E	Fish bitmasks, dp, probabilities	1900	x5203
16D	Logging implementation, strings	1900	x1614
16C	Monitor binary search, number theory	1800	x4797
16B	Burglar and Matches greedy, implementation, sortings	900	x18192
16A	Flag implementation	800	x14491
15E	Triangles combinatorics, dp	2600	x588
15D	Map data structures, implementation, sortings	2500	x770
15C	Industrial Nim games	2000	x2330
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	x4598
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3404
14B	Young Photographer implementation	1000	x7121
14A	Letter implementation	800	x10735
13E	Holes data structures, dsu	2700	x6125
13D	Triangles dp, geometry	2600	x667
13C	Sequence dp, sortings	2200	x4701
13B	Letter A geometry, implementation	2000	x1006
13A	Numbers implementation, math	1000	x7862
12E	Start of the session constructive algorithms	2100	x1239
12D	Ball data structures, sortings	2400	x2327
12C	Fruits greedy, implementation, sortings	1100	x6272
12B	Correct Solution? implementation, sortings	1100	x8603
12A	Super Agent implementation	800	x13211
11E	Forward, march! binary search, dp, greedy	2800	x368
11D	A Simple Task bitmasks, dp, graphs	2200	x4965
11C	How Many Squares? implementation	2200	x617
11B	Jumping Jack math	1600	x4742
11A	Increasing Sequence constructive algorithms, implementation, math	900	x13469
10E	Greedy Change constructive algorithms	2600	x839
10D	LCIS dp	2800	x4513
10C	Digital Root number theory	2000	x1469
10B	Cinema Cashier dp, implementation	1500	x1786
10A	Power Consumption Calculation implementation	900	x7245
9E	Interestring graph and Apples dfs and similar, dsu, graphs	2300	x1050
9D	How many trees? combinatorics, divide and conquer, dp	1900	x3914
9C	Hexadecimal's Numbers brute force, implementation, math	1200	x13020
9B	Running Student brute force, geometry, implementation	1200	x5535
9A	Die Roll math, probabilities	800	x57533
8E	Beads dp, graphs	2600	x697
8D	Two Friends binary search, geometry	2600	x528
8C	Looking for Order bitmasks, dp	2000	x3608
8B	Obsession with Robots constructive algorithms, graphs, implementation	1400	x4387
8A	Train and Peter strings	1200	x5944
7E	Defining Macros dp, expression parsing, implementation	2600	x722
7D	Palindrome Degree hashing, strings	2200	x3777
7C	Line math, number theory	1800	x4669
7B	Memory Manager implementation	1600	x2616
7A	Kalevitch and Chess brute force, constructive algorithms	1100	x7257
6E	Exposition binary search, data structures, dsu, trees, two pointers	1900	x3321
6D	Lizards and Basements 2 brute force, dp	2600	x2022
6C	Alice, Bob and Chocolate greedy, two pointers	1200	x14293
6B	President's Office implementation	1100	x13132