Problemset - Codeforces

→ Pay attention

Before contest
Helvetic Coding Contest 2024 online mirror (teams allowed, unrated)
24:30:09
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
235A	LCM Challenge number theory	1600	x16793
234H	Merging Two Decks constructive algorithms, greedy	2000	x556
234G	Practice constructive algorithms, divide and conquer, implementation	1600	x1452
234F	Fence dp	1800	x1712
234E	Champions' League implementation	1600	x981
234D	Cinema implementation	1600	x1515
234C	Weather dp, implementation	1300	x5327
234B	Reading sortings	1000	x6971
234A	Lefthanders and Righthanders implementation	1200	x4377
233B	Non-square Equation binary search, brute force, math	1400	x7301
233A	Perfect Permutation implementation, math	800	x40350
232E	Quick Tortoise bitmasks, divide and conquer, dp	3000	x672
232D	Fence binary search, data structures, string suffix structures	2900	x441
232C	Doe Graphs constructive algorithms, divide and conquer, dp, graphs, shortest paths	2600	x279
232B	Table bitmasks, combinatorics, dp, math	1900	x1386
232A	Cycles binary search, constructive algorithms, graphs, greedy	1600	x2447
231E	Cactus data structures, dfs and similar, dp, graphs, trees	2100	x1536
231D	Magic Box brute force, geometry	1600	x4031
231C	To Add or Not to Add binary search, sortings, two pointers	1600	x8291
231B	Magic, Wizardry and Wonders constructive algorithms, greedy	1500	x3553
231A	Team brute force, greedy	800	x298704
230B	T-primes binary search, implementation, math, number theory	1300	x69737
230A	Dragons greedy, sortings	1000	x74209
229E	Gifts combinatorics, dp, math, probabilities	2600	x450
229D	Towers dp, greedy, two pointers	2100	x2100
229C	Triangles combinatorics, graphs, math	1900	x1591
229B	Planets binary search, data structures, graphs, shortest paths	1700	x4456
229A	Shifts brute force, two pointers	1500	x3437
228E	The Road to Berland is Paved With Good Intentions 2-sat, dfs and similar, dsu, graphs	1900	x2339
228D	Zigzag data structures	2100	x374
228C	Fractal Detector dp, hashing	2000	x441
228B	Two Tables brute force, implementation	1400	x3430
228A	Is your horseshoe on the other hoof? implementation	800	x101767
227B	Effective Approach implementation	1100	x26354
227A	Where do I Turn? geometry	1300	x4037
226E	Noble Knight's Path data structures, trees	2900	x431
226D	The table constructive algorithms, greedy	2100	x945
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x842
226B	Naughty Stone Piles greedy	1900	x1535
226A	Flying Saucer Segments math	1400	x3902
225E	Unsolvable math, number theory	2100	x777
225D	Snake bitmasks, dfs and similar, graphs, implementation	2200	x911
225C	Barcode dp, matrices	1700	x8745
225B	Well-known Numbers binary search, greedy, number theory	1600	x3098
225A	Dice Tower constructive algorithms, greedy	1100	x11054
224B	Array bitmasks, implementation, two pointers	1500	x7149
224A	Parallelepiped brute force, geometry, math	1100	x25337
223E	Planar Graph flows, geometry, graphs	3000	x187
223D	Spider geometry, graphs	3000	x68
223C	Partial Sums combinatorics, math, number theory	1900	x1511
223B	Two Strings data structures, dp, strings	1900	x1717
223A	Bracket Sequence data structures, expression parsing, implementation	1700	x2483
222E	Decoding Genome dp, matrices	1900	x2524
222D	Olympiad binary search, greedy, sortings, two pointers	1900	x2127
222C	Reducing Fractions implementation, math, number theory, sortings	1800	x2081
222B	Cosmic Tables data structures, implementation	1300	x5982
222A	Shooshuns and Sequence brute force, implementation	1200	x10341
221B	Little Elephant and Numbers implementation	1300	x4498
221A	Little Elephant and Function implementation, math	1000	x14650
220E	Little Elephant and Inversions data structures, two pointers	2400	x1330
220D	Little Elephant and Triangle geometry, math	2500	x272
220C	Little Elephant and Shifts data structures	2100	x921
220B	Little Elephant and Array constructive algorithms, data structures	1800	x9375
220A	Little Elephant and Problem implementation, sortings	1300	x11794
219E	Parking Lot data structures	2200	x601
219D	Choosing Capital for Treeland dfs and similar, dp, graphs, trees	1700	x8557
219C	Color Stripe brute force, dp, greedy	1600	x6541
219B	Special Offer! Super Price 999 Bourles! implementation	1400	x5696
219A	k-String implementation, strings	1000	x25968
218B	Airport implementation	1100	x15723
218A	Mountain Scenery brute force, constructive algorithms, implementation	1100	x8888
217E	Alien DNA data structures, dsu, trees	2800	x290
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x245
217C	Formurosa divide and conquer, dp, expression parsing	2600	x312
217B	Blackboard Fibonacci brute force, math	2100	x853
217A	Ice Skating brute force, dfs and similar, dsu, graphs	1200	x20355
216E	Martian Luck math, number theory	2000	x543
216D	Spider's Web binary search, sortings, two pointers	1700	x1323
216C	Hiring Staff greedy	1800	x1799
216B	Forming Teams dfs and similar, implementation	1700	x6083
216A	Tiling with Hexagons implementation, math	1200	x4910
215E	Periodical Numbers combinatorics, dp, number theory	2100	x538
215D	Hot Days greedy	1900	x1575
215C	Crosses brute force, implementation	2100	x480
215B	Olympic Medal greedy, math	1300	x5356
215A	Bicycle Chain brute force, implementation	900	x13897
214B	Hometask brute force, constructive algorithms, greedy, math	1600	x4882
214A	System of Equations brute force	800	x33593
213E	Two Permutations data structures, hashing, strings	2700	x766
213D	Stars constructive algorithms, geometry	2300	x333
213C	Relay Race dp	2000	x2697
213B	Numbers combinatorics, dp	1900	x1663
213A	Game dfs and similar, greedy	1700	x1686
212E	IT Restaurants dfs and similar, dp, trees	1500	x1657
212D	Cutting a Fence binary search, data structures, dsu	2500	x451
212C	Cowboys combinatorics, dp, math	2100	x376
212B	Polycarpus is Looking for Good Substrings bitmasks, hashing, implementation	2300	x321
212A	Privatization flows, graphs	3000	x186
209C	Trails and Glades constructive algorithms, dsu, graphs, greedy	2400	x690
209B	Pixels constructive algorithms, math	2100	x357