Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round (Div. 3)
5 days

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
20C	Dijkstra? graphs, shortest paths	1900	x34868
20B	Equation math	2000	x4065
20A	BerOS file system implementation	1700	x6384
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x2049
19D	Points data structures	2800	x2567
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1126
19B	Checkout Assistant dp	1900	x5038
19A	World Football Cup implementation	1400	x2829
18E	Flag 2 dp	2000	x1127
18D	Seller Bob brute force, dp, greedy	2000	x1094
18C	Stripe data structures, implementation	1200	x13585
18B	Platforms brute force, math	1700	x2184
18A	Triangle brute force, geometry	1500	x6243
17E	Palisection strings	2900	x1636
17D	Notepad number theory	2400	x1124
17C	Balance dp	2500	x953
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x5116
17A	Noldbach problem brute force, math, number theory	1000	x17490
16E	Fish bitmasks, dp, probabilities	1900	x5409
16D	Logging implementation, strings	1900	x1647
16C	Monitor binary search, number theory	1800	x4892
16B	Burglar and Matches greedy, implementation, sortings	900	x18606
16A	Flag implementation	800	x14983
15E	Triangles combinatorics, dp	2600	x597
15D	Map data structures, implementation, sortings	2500	x789
15C	Industrial Nim games	2000	x2393
15B	Laser math	1800	x1491
15A	Cottage Village implementation, sortings	1200	x3993
14E	Camels dp	1900	x1749
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x4685
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3454
14B	Young Photographer implementation	1000	x7246
14A	Letter implementation	800	x11038
13E	Holes data structures, dsu	2700	x6410
13D	Triangles dp, geometry	2600	x672
13C	Sequence dp, sortings	2200	x4839
13B	Letter A geometry, implementation	2000	x1012
13A	Numbers implementation, math	1000	x8021
12E	Start of the session constructive algorithms	2100	x1276
12D	Ball data structures, sortings	2400	x2409
12C	Fruits greedy, implementation, sortings	1100	x6407
12B	Correct Solution? implementation, sortings	1100	x8795
12A	Super Agent implementation	800	x13570
11E	Forward, march! binary search, dp, greedy	2800	x375
11D	A Simple Task bitmasks, dp, graphs	2200	x5163
11C	How Many Squares? implementation	2200	x631
11B	Jumping Jack math	1600	x4989
11A	Increasing Sequence constructive algorithms, implementation, math	900	x13806
10E	Greedy Change constructive algorithms	2600	x847
10D	LCIS dp	2800	x4694
10C	Digital Root number theory	2000	x1490
10B	Cinema Cashier dp, implementation	1500	x1822
10A	Power Consumption Calculation implementation	900	x7468
9E	Interestring graph and Apples dfs and similar, dsu, graphs	2300	x1065
9D	How many trees? combinatorics, divide and conquer, dp	1900	x3981
9C	Hexadecimal's Numbers brute force, implementation, math	1200	x13218
9B	Running Student brute force, geometry, implementation	1200	x5663
9A	Die Roll math, probabilities	800	x59855
8E	Beads dp, graphs	2600	x709
8D	Two Friends binary search, geometry	2600	x538
8C	Looking for Order bitmasks, dp	2000	x3671
8B	Obsession with Robots constructive algorithms, graphs, implementation	1400	x4444
8A	Train and Peter strings	1200	x6039
7E	Defining Macros dp, expression parsing, implementation	2600	x731
7D	Palindrome Degree hashing, strings	2200	x3872
7C	Line math, number theory	1800	x4743
7B	Memory Manager implementation	1600	x2649
7A	Kalevitch and Chess brute force, constructive algorithms	1100	x7372
6E	Exposition binary search, data structures, dsu, trees, two pointers	1900	x3395
6D	Lizards and Basements 2 brute force, dp	2600	x2049
6C	Alice, Bob and Chocolate greedy, two pointers	1200	x14667
6B	President's Office implementation	1100	x13434
6A	Triangle brute force, geometry	900	x20461
5E	Bindian Signalizing data structures	2400	x2222
5D	Follow Traffic Rules implementation, math	2100	x1767
5C	Longest Regular Bracket Sequence constructive algorithms, data structures, dp, greedy, sortings, strings	1900	x14594
5B	Center Alignment implementation, strings	1200	x6077
5A	Chat Servers Outgoing Traffic implementation	1000	x9967
4D	Mysterious Present dp, sortings	1700	x10692
4C	Registration System data structures, hashing, implementation	1300	x88326
4B	Before an Exam constructive algorithms, greedy	1200	x25922
4A	Watermelon brute force, math	800	x562763
3D	Least Cost Bracket Sequence greedy	2600	x3468
3C	Tic-tac-toe brute force, games, implementation	1800	x7531
3B	Lorry greedy, sortings	1900	x4682
3A	Shortest path of the king greedy, shortest paths	1000	x19864
2C	Commentator problem geometry	2600	x1798
2B	The least round way dp, math	2000	x11265
2A	Winner hashing, implementation	1500	x27332
1C	Ancient Berland Circus geometry, math	2100	x5848
1B	Spreadsheet implementation, math	1600	x23493
1A	Theatre Square math	1000	x275408

→