Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round (Div. 2)
5 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

implementation

Add tag

Problems

#	Name
2185C	Shifted MEX implementation, sortings	900	x31810
2183D2	Tree Coloring (Hard Version) combinatorics, constructive algorithms, data structures, dfs and similar, greedy, implementation, trees	2100	x2661
2182A	New Year String constructive algorithms, greedy, implementation, strings	800	x26717
2180G	Balance bitmasks, combinatorics, implementation, math	3500	x161
2179H	Blackslex and Plants bitmasks, data structures, dp, implementation, math	2200	x1410
2179C	Blackslex and Number Theory implementation, math, number theory, sortings	1100	x23743
2179B	Blackslex and Showering dp, greedy, implementation	800	x29642
2178D	Xmas or Hysteria constructive algorithms, greedy, implementation, math	1700	x7140
2178C	First or Second dp, greedy, implementation	1200	x17217
2178B	Impost or Sus dp, greedy, implementation, strings	900	x22882
2176E	Remove at the lowest cost data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2400	x1408
2176A	Operations with Inversions greedy, implementation, math	800	x30351
2175A	Little Fairy's Painting implementation	800	x19798
2173A	Sleeping Through Classes greedy, implementation	800	x24903
2172N	New Kingdom constructive algorithms, graphs, implementation	2800	x184
2172L	Maximum Color Segment dp, implementation	2300	x948
2172K	Kindergarten Homework implementation, strings	2100	x958
2172E	Number Maze implementation	1200	x6764
2172A	ASCII Art Contest implementation	800	x15734
2171F	Rae Taylor and Trees (hard version) binary search, constructive algorithms, data structures, dp, dsu, greedy, implementation, trees	1600	x7939
2171D	Rae Taylor and Trees (easy version) binary search, data structures, dp, dsu, greedy, implementation, trees	1400	x12790
2170D	Almost Roman constructive algorithms, greedy, implementation	2200	x1809
2170A	Maximum Neighborhood bitmasks, brute force, greedy, implementation, math	800	x20978
2169D2	Removal of a Sequence (Hard Version) binary search, divide and conquer, greedy, implementation, math, number theory	2100	x2437
2169D1	Removal of a Sequence (Easy Version) binary search, implementation, math, number theory	1500	x9258
2169B	Drifting Away greedy, implementation	1100	x17263
2169A	Alice and Bob greedy, implementation	900	x20820
2167E	khba Loves to Sleep! binary search, data structures, geometry, greedy, implementation	1600	x9934
2167D	Yet Another Array Problem brute force, implementation, math, number theory	1000	x32568
2167C	Isamatdin and His Magic Wand! constructive algorithms, greedy, implementation, sortings	800	x38083
2164D	Copy String greedy, implementation, strings, two pointers	1800	x7189
2163D1	Diadrash (Easy Version) binary search, brute force, divide and conquer, implementation, interactive	2100	x2895
2163B	Siga ta Kymata constructive algorithms, greedy, implementation, math	1700	x9748
2161E	Left is Always Right combinatorics, implementation, math	2400	x835
2161B	Make Connected brute force, implementation	1700	x5696
2161A	Round Trip games, greedy, implementation, math	800	x16263
2159B	Rectangles brute force, data structures, dp, dsu, greedy, implementation, two pointers	2100	x4315
2159A	MAD Interactive Problem constructive algorithms, implementation, interactive	1700	x9736
2158E	Sink data structures, divide and conquer, dsu, graphs, implementation	2600	x702
2158D	Palindrome Flipping brute force, constructive algorithms, graphs, implementation, shortest paths, strings	2000	x3574
2157E	Adjusting Drones binary search, brute force, data structures, dp, dsu, greedy, implementation, sortings	1900	x5754
2157C	Meximum Array 2 constructive algorithms, greedy, implementation, math	1400	x12071
2157B	Expansion Plan 2 implementation, math	900	x15693
2157A	Dungeon Equilibrium greedy, implementation, sortings	800	x19276
2156F1	Strange Operation (Easy Version) brute force, data structures, greedy, implementation, sortings	2300	x1724
2156B	Strange Machine binary search, brute force, greedy, implementation	1000	x22046
2155C	The Ancient Wizards' Capes brute force, greedy, implementation	1600	x11193
2155A	El fucho implementation, math	800	x26363
2154F1	Bombing (Easy Version) brute force, combinatorics, constructive algorithms, implementation, math	2700	x619
2154C1	No Cost Too Great (Easy Version) greedy, implementation, math, number theory	1400	x14564
2153F	Odd Queries on Odd Array bitmasks, brute force, data structures, implementation, trees	2900	x349
2153C	Symmetrical Polygons constructive algorithms, geometry, greedy, implementation, sortings	1500	x12593
2152G	Query Jungle data structures, implementation, math, matrices, trees	2900	x4085
2152A	Increase or Smash greedy, implementation	800	x25195
2151C	Incremental Stay greedy, implementation, math	1400	x11255
2150G	Counting Is Fun: The Finale combinatorics, implementation	3500	x455
2150F	Cycle Closing constructive algorithms, graphs, implementation, shortest paths, trees	3000	x328
2150B	Grid Counting combinatorics, implementation, math	1700	x8563
2150A	Incremental Path data structures, hashing, implementation	1300	x14502
2148F	Gravity Falls greedy, implementation, sortings	1800	x7108
2147C	Rabbits constructive algorithms, dp, greedy, implementation	1500	x12530
2146B	Merging the Sets greedy, implementation	1100	x16956
2146A	Equal Occurrences brute force, greedy, implementation	800	x22791
2145B	Deck of Cards greedy, implementation	1000	x22946
2141A	Furniture Store *special problem, implementation	800	x1711
2138D	Antiamuny and Slider Movement brute force, combinatorics, implementation, math, sortings	2600	x694
2137E	Mexification brute force, implementation, math	1500	x10937
2137C	Maximum Even Sum brute force, greedy, implementation, math	1100	x24268
2134E	Power Boxes constructive algorithms, dp, implementation, interactive	2300	x2566
2134D	Sliding Tree constructive algorithms, dfs and similar, greedy, implementation, trees	2300	x3850
2134C	Even Larger brute force, greedy, implementation	1200	x19876
2134A	Painting With Two Colors constructive algorithms, implementation, math	800	x27744
2133A	Redstone? brute force, data structures, implementation, math	800	x32201
2132G	Famous Choreographer hashing, implementation, strings	2600	x541
2132D	From 1 to Infinity binary search, dp, implementation, math	1600	x9373
2132A	Homework brute force, implementation, strings	800	x45977
2129D	Permutation Blackhole brute force, combinatorics, dp, implementation, math	2600	x3792
2127H	23 Rises Again brute force, dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation, probabilities, trees	3100	x2819
2127G2	Inter Active (Hard Version) binary search, bitmasks, constructive algorithms, graphs, implementation, interactive, math, probabilities	3500	x172
2126F	1-1-1, Free Tree! brute force, data structures, dfs and similar, graphs, implementation, trees	2000	x4530
2126A	Only One Digit brute force, implementation, math	800	x54801
2125A	Difficult Contest constructive algorithms, implementation, sortings, strings	800	x28837
2121H	Ice Baby binary search, brute force, data structures, dp, implementation, sortings	2300	x2361
2121E	Sponsor of Your Problems dp, greedy, implementation, strings	1500	x15474
2121D	1709 implementation, sortings	1300	x18965
2121C	Those Who Are With Us greedy, greedy, implementation	1200	x22755
2118D2	Red Light, Green Light (Hard version) binary search, brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2200	x2614
2118D1	Red Light, Green Light (Easy version) brute force, dfs and similar, dp, graphs, implementation, number theory	1700	x8760
2117A	False Alarm greedy, implementation	800	x39220
2114D	Come a Little Closer brute force, greedy, implementation, math	1400	x15216
2113E	From Kazan with Love dfs and similar, graphs, implementation, trees	2800	x441
2113D	Cheater binary search, constructive algorithms, greedy, implementation	2200	x3008
2112A	Race implementation, math	800	x30003
2111E	Changing the String binary search, data structures, greedy, implementation, sortings, strings	1900	x5605
2111D	Creating a Schedule constructive algorithms, data structures, greedy, implementation, sortings	1400	x12555
2111B	Fibonacci Cubes brute force, dp, implementation, math	1100	x18468
2111A	Energy Crystals greedy, implementation, math	800	x21035
2110E	Melody dfs and similar, graphs, implementation	2300	x2889
2110A	Fashionable Array implementation, sortings	800	x30547
2109A	It's Time To Duel implementation	800	x27411

The only programming contests Web 2.0 platform

Server time: Oct/19/2026 19:53:29 (g2).

Desktop version, switch to mobile version.

Supported by