Problemset - Codeforces

→ Pay attention

Before contest
Good Bye 2024: 2025 is NEAR
3 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
888A	Local Extrema brute force, implementation	800	x11118
887F	Row of Models greedy, sortings	2500	x168
887E	Little Brother binary search, geometry, sortings	2800	x164
887D	Ratings and Reality Shows data structures, two pointers	2400	x483
887C	Solution for Cube brute force, implementation	1500	x2904
887B	Cubes for Masha brute force, implementation	1300	x5662
887A	Div. 64 implementation	1000	x11354
886F	Symmetric Projections geometry	2900	x269
886E	Maximum Element combinatorics, dp, math	2400	x1036
886D	Restoration of string constructive algorithms, graphs, implementation	2000	x1809
886C	Petya and Catacombs dsu, greedy, implementation, trees	1300	x5490
886B	Vlad and Cafes	1000	x7947
886A	ACM ICPC brute force	1000	x10383
884F	Anti-Palindromize flows, graphs, greedy	2500	x1078
884E	Binary Matrix dsu	2500	x700
884D	Boxes And Balls data structures, greedy	2300	x2055
884C	Bertown Subway dfs and similar, greedy, math	1500	x4770
884B	Japanese Crosswords Strike Back implementation	1100	x6908
884A	Book Reading implementation	800	x10547
883M	Quadcopter Competition greedy, math	1100	x3619
883L	Berland.Taxi data structures	2500	x239
883K	Road Widening constructive algorithms, greedy, implementation	1800	x1106
883J	Renovation constructive algorithms, greedy, sortings	2400	x582
883I	Photo Processing binary search, dp	1900	x2052
883H	Palindromic Cut brute force, implementation, strings	1800	x1651
883G	Orientation of Edges dfs and similar, graphs	1900	x1425
883F	Lost in Transliteration implementation	1300	x2291
883E	Field of Wonders implementation, strings	1500	x1917
883D	Packmen Strike Back binary search, dp, math	2500	x444
883C	Downloading B++ binary search, implementation	2300	x629
883B	Berland Army constructive algorithms, graphs, greedy	2600	x382
883A	Automatic Door implementation	2200	x594
879B	Table Tennis data structures, implementation	1200	x12716
879A	Borya's Diagnosis implementation	900	x9112
878E	Numbers on the blackboard combinatorics, dp	3300	x582
878D	Magic Breeding bitmasks	2900	x711
878C	Tournament data structures, graphs	2700	x933
878B	Teams Formation data structures, implementation	2300	x1074
878A	Short Program bitmasks, constructive algorithms	1600	x5568
877F	Ann and Books data structures, flows, hashing	2300	x1858
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x4674
877D	Olya and Energy Drinks data structures, dfs and similar, graphs, shortest paths	2100	x4443
877C	Slava and tanks constructive algorithms	1600	x5758
877B	Nikita and string brute force, dp	1500	x10618
877A	Alex and broken contest implementation, strings	1100	x10941
876B	Divisiblity of Differences implementation, math, number theory	1300	x9289
876A	Trip For Meal math	900	x9452
875F	Royal Questions dsu, graphs, greedy	2500	x1384
875E	Delivery Club binary search, data structures, dp	2600	x925
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x2295
875C	National Property 2-sat, dfs and similar, graphs, implementation	2100	x2138
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x5229
875A	Classroom Watch brute force, math	1200	x9713
873F	Forbidden Indices dsu, string suffix structures, strings	2400	x1432
873E	Awards For Contestants brute force, data structures, dp	2300	x706
873D	Merge Sort constructive algorithms, divide and conquer	1800	x3236
873C	Strange Game On Matrix greedy, two pointers	1600	x3330
873B	Balanced Substring dp, implementation	1500	x7909
873A	Chores implementation	800	x8382
871E	Restore the Tree graphs, greedy, trees	2900	x150
870F	Paths data structures, number theory	2700	x624
870E	Points, Lines and Ready-made Titles dfs and similar, dsu, graphs, trees	2300	x1239
870D	Something with XOR Queries brute force, interactive, probabilities	2000	x1235
870C	Maximum splitting dp, greedy, math, number theory	1300	x9257
870B	Maximum of Maximums of Minimums greedy	1200	x9674
870A	Search for Pretty Integers brute force, implementation	900	x10235
869E	The Untended Antiquity data structures, hashing	2400	x1844
869D	The Overdosing Ubiquity brute force, dfs and similar, graphs	2800	x252
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4744
869B	The Eternal Immortality math	1100	x13864
869A	The Artful Expedient brute force, implementation	1100	x9491
868G	El Toll Caves math	3300	x136
868F	Yet Another Minimization Problem divide and conquer, dp	2500	x3936
868E	Policeman and a Tree dp, graphs, trees	2700	x530
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x927
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4650
868B	Race Against Time implementation	1400	x3694
868A	Bark to Unlock brute force, implementation, strings	900	x8753
867A	Between the Offices implementation	800	x19466
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x139
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x70
865E	Hex Dyslexia bitmasks, brute force, dp, graphs	3300	x141
865D	Buy Low Sell High constructive algorithms, data structures, greedy	2400	x5872
865C	Gotta Go Fast binary search, dp	2400	x855
865B	Ordering Pizza binary search, sortings, ternary search	1900	x1872
865A	Save the problem! constructive algorithms	1400	x4346
864F	Cities Excursions dfs and similar, graphs, trees	2700	x637
864E	Fire dp, sortings	2000	x4302
864D	Make a Permutation! greedy, implementation, math	1500	x6028
864C	Bus greedy, implementation, math	1500	x5874
864B	Polycarp and Letters brute force, implementation, strings	1000	x9264
864A	Fair Game implementation, sortings	1000	x11705
863G	Graphic Settings	3200	x57
863F	Almost Permutation flows	2200	x1284
863E	Turn Off The TV data structures, sortings	2000	x3222
863D	Yet Another Array Queries Problem data structures, implementation	1800	x3325
863C	1-2-3 graphs, implementation	1800	x2526
863B	Kayaking brute force, greedy, sortings	1500	x8599
863A	Quasi-palindrome brute force, implementation	900	x10297
862F	Mahmoud and Ehab and the final stage data structures, strings	2900	x212