Problemset - Codeforces

→ Pay attention

Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
5 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
19A	World Football Cup implementation	1400	x2781
18E	Flag 2 dp	2000	x1090
18D	Seller Bob brute force, dp, greedy	2000	x1077
18C	Stripe data structures, implementation	1200	x13323
18B	Platforms brute force, math	1700	x2154
18A	Triangle brute force, geometry	1500	x6102
17E	Palisection strings	2900	x1604
17D	Notepad number theory	2400	x1100
17C	Balance dp	2500	x937
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x4916
17A	Noldbach problem brute force, math, number theory	1000	x16823
16E	Fish bitmasks, dp, probabilities	1900	x5210
16D	Logging implementation, strings	1900	x1615
16C	Monitor binary search, number theory	1800	x4799
16B	Burglar and Matches greedy, implementation, sortings	900	x18211
16A	Flag implementation	800	x14509
15E	Triangles combinatorics, dp	2600	x588
15D	Map data structures, implementation, sortings	2500	x771
15C	Industrial Nim games	2000	x2334
15B	Laser math	1800	x1478
15A	Cottage Village implementation, sortings	1200	x3937
14E	Camels dp	1900	x1724
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x4604
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3409
14B	Young Photographer implementation	1000	x7123
14A	Letter implementation	800	x10744
13E	Holes data structures, dsu	2700	x6140
13D	Triangles dp, geometry	2600	x667
13C	Sequence dp, sortings	2200	x4704
13B	Letter A geometry, implementation	2000	x1006
13A	Numbers implementation, math	1000	x7867
12E	Start of the session constructive algorithms	2100	x1239
12D	Ball data structures, sortings	2400	x2334
12C	Fruits greedy, implementation, sortings	1100	x6274
12B	Correct Solution? implementation, sortings	1100	x8609
12A	Super Agent implementation	800	x13229
11E	Forward, march! binary search, dp, greedy	2800	x368
11D	A Simple Task bitmasks, dp, graphs	2200	x4969
11C	How Many Squares? implementation	2200	x618
11B	Jumping Jack math	1600	x4745
11A	Increasing Sequence constructive algorithms, implementation, math	900	x13479
10E	Greedy Change constructive algorithms	2600	x839
10D	LCIS dp	2800	x4520
10C	Digital Root number theory	2000	x1469
10B	Cinema Cashier dp, implementation	1500	x1787
10A	Power Consumption Calculation implementation	900	x7251
9E	Interestring graph and Apples dfs and similar, dsu, graphs	2300	x1051
9D	How many trees? combinatorics, divide and conquer, dp	1900	x3916
9C	Hexadecimal's Numbers brute force, implementation, math	1200	x13026
9B	Running Student brute force, geometry, implementation	1200	x5543
9A	Die Roll math, probabilities	800	x57588
8E	Beads dp, graphs	2600	x698
8D	Two Friends binary search, geometry	2600	x528
8C	Looking for Order bitmasks, dp	2000	x3611
8B	Obsession with Robots constructive algorithms, graphs, implementation	1400	x4391
8A	Train and Peter strings	1200	x5947
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	x2617
7A	Kalevitch and Chess brute force, constructive algorithms	1100	x7262
6E	Exposition binary search, data structures, dsu, trees, two pointers	1900	x3322
6D	Lizards and Basements 2 brute force, dp	2600	x2024
6C	Alice, Bob and Chocolate greedy, two pointers	1200	x14308
6B	President's Office implementation	1100	x13139
6A	Triangle brute force, geometry	900	x20041
5E	Bindian Signalizing data structures	2400	x2167
5D	Follow Traffic Rules implementation, math	2100	x1728
5C	Longest Regular Bracket Sequence constructive algorithms, data structures, dp, greedy, sortings, strings	1900	x14143
5B	Center Alignment implementation, strings	1200	x5962
5A	Chat Servers Outgoing Traffic implementation	1000	x9788
4D	Mysterious Present dp, sortings	1700	x10419
4C	Registration System data structures, hashing, implementation	1300	x84880
4B	Before an Exam constructive algorithms, greedy	1200	x25257
4A	Watermelon brute force, math	800	x537599
3D	Least Cost Bracket Sequence greedy	2600	x3423
3C	Tic-tac-toe brute force, games, implementation	1800	x7397
3B	Lorry greedy, sortings	1900	x4617
3A	Shortest path of the king greedy, shortest paths	1000	x19415
2C	Commentator problem geometry	2600	x1775
2B	The least round way dp, math	2000	x11017
2A	Winner hashing, implementation	1500	x26697
1C	Ancient Berland Circus geometry, math	2100	x5746
1B	Spreadsheet implementation, math	1600	x22958
1A	Theatre Square math	1000	x266100

→