Problemset - Codeforces

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
3 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
621E	Wet Shark and Blocks dp, matrices	2000	x2871
621D	Rat Kwesh and Cheese brute force, constructive algorithms, math	2400	x998
621C	Wet Shark and Flowers combinatorics, math, number theory, probabilities	1700	x5571
620F	Xors on Segments data structures, strings, trees	2800	x743
620E	New Year Tree bitmasks, data structures, trees	2100	x5710
620D	Professor GukiZ and Two Arrays binary search, two pointers	2200	x1729
618G	Combining Slimes dp, math, matrices, probabilities	3300	x241
618F	Double Knapsack constructive algorithms, two pointers	3000	x1408
618E	Robot Arm data structures, geometry	2500	x646
618D	Hamiltonian Spanning Tree dfs and similar, dp, graph matchings, greedy, trees	2200	x1737
618C	Constellation geometry, implementation	1600	x4286
617E	XOR and Favorite Number data structures	2200	x8545
617D	Polyline constructive algorithms, implementation	1700	x4225
617C	Watering Flowers implementation	1600	x4880
616F	Expensive Strings data structures, sortings, string suffix structures, strings	2700	x607
616E	Sum of Remainders implementation, math, number theory	2200	x2979
616D	Longest k-Good Segment binary search, data structures, two pointers	1600	x9704
616C	The Labyrinth dfs and similar	1600	x5708
615E	Hexagons binary search, implementation, math	2100	x986
615D	Multipliers math, number theory	2000	x3937
615C	Running Track dp, greedy, strings, trees	2000	x2330
615B	Longtail Hedgehog dp, graphs	1600	x5118
613E	Puzzle Lover dp, hashing, strings	3200	x474
613D	Kingdom and its Cities dfs and similar, divide and conquer, dp, graphs, sortings, trees	2800	x3053
613C	Necklace constructive algorithms, math	2500	x1014
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2238
613A	Peter and Snow Blower binary search, geometry, ternary search	1900	x3249
612F	Simba on the Circle dp	2600	x389
612E	Square Root of Permutation combinatorics, constructive algorithms, dfs and similar, graphs, math	2200	x1718
612D	The Union of k-Segments greedy, sortings	1800	x3896
611H	New Year and Forgotten Tree constructive algorithms, flows, graphs	3200	x583
611G	New Year and Cake geometry, two pointers	2900	x434
611F	New Year and Cleaning binary search, implementation	2500	x484
611E	New Year and Three Musketeers data structures, greedy, sortings	2400	x869
611D	New Year and Ancient Prophecy dp, hashing, strings	2000	x2601
610E	Alphabet Permutations data structures, strings	2500	x893
610D	Vika and Segments constructive algorithms, data structures, geometry, two pointers	2300	x1506
610C	Harmony Analysis constructive algorithms	1800	x2885
609F	Frogs and mosquitoes data structures, greedy	2500	x1264
609E	Minimum spanning tree for each edge data structures, dfs and similar, dsu, graphs, trees	2100	x7977
609D	Gadgets for dollars and pounds binary search, greedy, two pointers	2000	x2758
607E	Cross Sum binary search, geometry	3300	x255
607D	Power Tree data structures, trees	2600	x578
607C	Marbles hashing, strings	2500	x797
607B	Zuma dp	1900	x12459
607A	Chain Reaction binary search, dp	1600	x9653
606B	Testing Robots implementation	1600	x2762
605E	Intergalaxy Trips probabilities, shortest paths	2700	x1391
605D	Board Game data structures, dfs and similar	2500	x808
605C	Freelancer's Dreams geometry	2400	x1126
605B	Lazy Student constructive algorithms, data structures, graphs	1700	x3472
605A	Sorting Railway Cars constructive algorithms, greedy	1600	x7159
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x1249
603D	Ruminations on Ruminants geometry, math	2900	x340
603C	Lieges of Legendre games, math	2200	x1892
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	1800	x2589
603A	Alternative Thinking dp, greedy, math	1600	x7691
601E	A Museum Robbery data structures, dp	2800	x874
601D	Acyclic Organic Compounds data structures, dfs and similar, dsu, hashing, strings, trees	2400	x1159
601C	Kleofáš and the n-thlon dp, math, probabilities	2300	x1335
601B	Lipshitz Sequence data structures, math	2100	x2333
601A	The Two Routes graphs, shortest paths	1600	x12087
600F	Edge coloring of bipartite graph graphs	2800	x828
600E	Lomsat gelral data structures, dfs and similar, dsu, trees	2300	x14237
600D	Area of Two Circles' Intersection geometry	2000	x2317
600C	Make Palindrome constructive algorithms, greedy, strings	1800	x6284
600A	Extract Numbers implementation, strings	1600	x5331
599E	Sandy and Nuts bitmasks, dp, trees	2600	x671
599D	Spongebob and Squares brute force, math	1900	x2591
599C	Day at the Beach sortings	1600	x4670
598F	Cut Length geometry	2900	x380
598E	Chocolate Bar brute force, dp	2000	x5091
598D	Igor In the Museum dfs and similar, graphs, shortest paths	1700	x11233
598C	Nearest vectors geometry, sortings	2300	x4490
597C	Subsequences data structures, dp	1900	x5073
597B	Restaurant dp, greedy, sortings	1600	x4875
597A	Divisibility math	1600	x4543
596E	Wilbur and Strings dfs and similar, dp, graphs, strings	2500	x393
596D	Wilbur and Trees dp, math, probabilities, sortings	2300	x685
596C	Wilbur and Points combinatorics, greedy, sortings	1700	x2258
595B	Pasha and Phone binary search, math	1600	x2927
594E	Cutting the Line string suffix structures, strings	3100	x162
594D	REQ data structures, number theory	2500	x1635
594C	Edo and Magnets brute force, greedy, implementation, two pointers	2300	x690
594B	Max and Bike binary search, geometry	2500	x500
594A	Warrior and Archer games	2300	x1733
593E	Strange Calculation and Cats dp, matrices	2400	x643
593D	Happy Tree Party data structures, dfs and similar, graphs, math, trees	2400	x1264
593C	Beautiful Function constructive algorithms, math	2200	x284
593B	Anton and Lines geometry, sortings	1600	x4060
592E	BCPC binary search, geometry, two pointers	2700	x216
592D	Super M dfs and similar, dp, graphs, trees	2200	x2643
592C	The Big Race math	1800	x3069
590E	Birthday graph matchings, strings	3200	x789
590D	Top Secret Task dp	2300	x1214
590C	Three States dfs and similar, graphs, shortest paths	2200	x2817
590B	Chip 'n Dale Rescue Rangers binary search, geometry, math	2100	x1917
590A	Median Smoothing implementation	1700	x3981
587F	Duff is Mad data structures, strings	3000	x1065
587E	Duff as a Queen data structures	2900	x723