Problemset - Codeforces

→ Pay attention

Before contest
Educational Codeforces Round 167 (Rated for Div. 2)
38:57:36
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
26D	Tickets combinatorics, math, probabilities	2400	x763
26C	Parquet combinatorics, constructive algorithms, greedy, implementation	2000	x827
26B	Regular Bracket Sequence greedy	1400	x17932
26A	Almost Prime number theory	900	x29299
25E	Test hashing, strings	2200	x2262
25D	Roads not only in Berland dsu, graphs, trees	1900	x10637
25C	Roads in Berland graphs, shortest paths	1900	x5957
25B	Phone numbers implementation	1100	x9428
25A	IQ test brute force	1300	x82669
24E	Berland collider binary search	2300	x870
24D	Broken robot dp, math, probabilities	2400	x1818
24C	Sequence of points geometry, implementation, math	1800	x1220
24B	F1 Champions implementation	1500	x1734
24A	Ring road graphs	1400	x4887
23E	Tree dp	2500	x593
23D	Tetragon geometry, math	2600	x328
23C	Oranges and Apples constructive algorithms, sortings	2500	x1369
23B	Party constructive algorithms, graphs, math	1600	x3233
23A	You're Given a String... brute force, greedy	1200	x5126
22E	Scheme dfs and similar, graphs, trees	2300	x1565
22D	Segments greedy, sortings	1900	x2644
22C	System Administrator graphs	1700	x2995
22B	Bargaining Table brute force, dp	1500	x4113
22A	Second Order Statistics brute force	800	x21269
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x816
21C	Stripe 2 binary search, dp, sortings	2000	x2051
21B	Intersection implementation, math	2000	x1318
21A	Jabber ID implementation, strings	1900	x1799
20C	Dijkstra? graphs, shortest paths	1900	x31004
20B	Equation math	2000	x3722
20A	BerOS file system implementation	1700	x6019
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x1666
19D	Points data structures	2800	x2186
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1061
19B	Checkout Assistant dp	1900	x4508
19A	World Football Cup implementation	1400	x2669
18E	Flag 2 dp	2000	x1031
18D	Seller Bob brute force, dp, greedy	2000	x1042
18C	Stripe data structures, implementation	1200	x12648
18B	Platforms brute force, math	1700	x2082
18A	Triangle brute force, geometry	1500	x5759
17E	Palisection strings	2900	x1521
17D	Notepad number theory	2400	x1043
17C	Balance dp	2500	x822
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x4567
17A	Noldbach problem brute force, math, number theory	1000	x15425
16E	Fish bitmasks, dp, probabilities	1900	x4775
16D	Logging implementation, strings	1900	x1525
16C	Monitor binary search, number theory	1800	x4592
16B	Burglar and Matches greedy, implementation, sortings	900	x17198
16A	Flag implementation	800	x13871
15E	Triangles combinatorics, dp	2600	x561
15D	Map data structures, implementation, sortings	2500	x728
15C	Industrial Nim games	2000	x2175
15B	Laser math	1800	x1429
15A	Cottage Village implementation, sortings	1200	x3798
14E	Camels dp	1900	x1625
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x4358
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3275
14B	Young Photographer implementation	1000	x6891
14A	Letter implementation	800	x10307
13E	Holes data structures, dsu	2700	x5488
13D	Triangles dp, geometry	2600	x601
13C	Sequence dp, sortings	2200	x4340
13B	Letter A geometry, implementation	2000	x969
13A	Numbers implementation, math	1000	x7585
12E	Start of the session constructive algorithms	2100	x1173
12D	Ball data structures, sortings	2400	x2170
12C	Fruits greedy, implementation, sortings	1100	x5989
12B	Correct Solution? implementation, sortings	1100	x8312
12A	Super Agent implementation	800	x12661
11E	Forward, march! binary search, dp, greedy	2800	x350
11D	A Simple Task bitmasks, dp, graphs	2200	x4553
11C	How Many Squares? implementation	2200	x596
11B	Jumping Jack math	1600	x4542
11A	Increasing Sequence constructive algorithms, implementation, math	900	x12771
10E	Greedy Change constructive algorithms	2600	x811
10D	LCIS dp	2800	x4119
10C	Digital Root number theory	2000	x1411
10B	Cinema Cashier dp, implementation	1500	x1731
10A	Power Consumption Calculation implementation	900	x6937
9E	Interestring graph and Apples dfs and similar, dsu, graphs	2300	x997
9D	How many trees? combinatorics, divide and conquer, dp	1900	x3703
9C	Hexadecimal's Numbers brute force, implementation, math	1200	x12651
9B	Running Student brute force, geometry, implementation	1200	x5369
9A	Die Roll math, probabilities	800	x53726
8E	Beads dp, graphs	2600	x669
8D	Two Friends binary search, geometry	2600	x513
8C	Looking for Order bitmasks, dp	2000	x3424
8B	Obsession with Robots constructive algorithms, graphs, implementation	1400	x4247
8A	Train and Peter strings	1200	x5691
7E	Defining Macros dp, expression parsing, implementation	2600	x694
7D	Palindrome Degree hashing, strings	2200	x3551
7C	Line math, number theory	1800	x4430
7B	Memory Manager implementation	1600	x2535
7A	Kalevitch and Chess brute force, constructive algorithms	1100	x7057
6E	Exposition binary search, data structures, dsu, trees, two pointers	1900	x3163
6D	Lizards and Basements 2 brute force, dp	2600	x1957
6C	Alice, Bob and Chocolate greedy, two pointers	1200	x13324
6B	President's Office implementation	1100	x12451