Problemset - Codeforces

→ Pay attention

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

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
630E	A rectangle math	1900	x2339
630D	Hexagons! math	1100	x11107
630C	Lucky Numbers combinatorics, math	1100	x22342
630B	Moore's Law math	1200	x7466
630A	Again Twenty Five! number theory	800	x70084
629E	Famil Door and Roads combinatorics, data structures, dfs and similar, dp, probabilities, trees	2300	x1025
629D	Babaei and Birthday Cake data structures, dp	2000	x4058
629C	Famil Door and Brackets dp, strings	2000	x2804
629B	Far Relative’s Problem brute force	1100	x8057
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13485
628F	Bear and Fair Set flows, graphs	2500	x784
628E	Zbazi in Zeydabad data structures, implementation	2300	x897
628D	Magic Numbers dp	2200	x6161
628C	Bear and String Distance greedy, strings	1300	x5871
628B	New Skateboard dp	1300	x10909
628A	Tennis Tournament implementation, math	1000	x6416
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x239
627E	Orchestra two pointers	3000	x594
627D	Preorder Test binary search, dfs and similar, dp, graphs, greedy, trees	2600	x874
627C	Package Delivery data structures, divide and conquer, greedy	2200	x1177
627B	Factory Repairs data structures	1700	x2937
627A	XOR Equation dp, math	1700	x4249
626G	Raffles data structures, dp, greedy, math	3100	x538
626F	Group Projects dp	2400	x2977
626E	Simple Skewness binary search, math, ternary search	2400	x1413
626D	Jerry's Protest brute force, combinatorics, dp, probabilities	1800	x2767
626C	Block Towers brute force, greedy, math, number theory	1600	x4358
626B	Cards constructive algorithms, dp, math	1300	x6634
626A	Robot Sequence brute force, implementation	1000	x6269
625E	Frog Fights data structures, greedy	2800	x348
625D	Finals in arithmetic constructive algorithms, implementation, math	2400	x635
625C	K-special Tables constructive algorithms, implementation	1300	x6840
625B	War of the Corporations constructive algorithms, greedy, strings	1200	x10470
625A	Guest From the Past implementation, math	1700	x5424
624B	Making a String greedy, sortings	1100	x8000
624A	Save Luke math	800	x10400
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x550
623D	Birthday greedy, math, probabilities	2700	x499
623C	Electric Charges binary search, dp	2900	x481
623B	Array GCD dp, greedy, number theory	2300	x2163
623A	Graph and String constructive algorithms, graphs	1800	x4507
622F	The Sum of the k-th Powers math	2600	x3917
622E	Ants in Leaves dfs and similar, greedy, sortings, trees	2200	x2105
622D	Optimal Number Permutation constructive algorithms	1900	x3014
622C	Not Equal on a Segment data structures, implementation	1700	x6735
622B	The Time implementation	900	x9686
622A	Infinite Sequence implementation, math	1000	x9421
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	x5585
621B	Wet Shark and Bishops combinatorics, implementation	1300	x11070
621A	Wet Shark and Odd and Even implementation	900	x20731
620F	Xors on Segments data structures, strings, trees	2800	x744
620E	New Year Tree bitmasks, data structures, trees	2100	x5726
620D	Professor GukiZ and Two Arrays binary search, two pointers	2200	x1732
620C	Pearls in a Row greedy	1500	x6858
620B	Grandfather Dovlet’s calculator implementation	1000	x9658
620A	Professor GukiZ's Robot implementation, math	800	x13300
618G	Combining Slimes dp, math, matrices, probabilities	3300	x241
618F	Double Knapsack constructive algorithms, two pointers	3000	x1409
618E	Robot Arm data structures, geometry	2500	x646
618D	Hamiltonian Spanning Tree dfs and similar, dp, graph matchings, greedy, trees	2200	x1749
618C	Constellation geometry, implementation	1600	x4302
618B	Guess the Permutation constructive algorithms	1100	x8001
618A	Slime Combining implementation	800	x8367
617E	XOR and Favorite Number data structures	2200	x8562
617D	Polyline constructive algorithms, implementation	1700	x4227
617C	Watering Flowers implementation	1600	x4886
617B	Chocolate combinatorics	1300	x18111
617A	Elephant math	800	x190342
616F	Expensive Strings data structures, sortings, string suffix structures, strings	2700	x608
616E	Sum of Remainders implementation, math, number theory	2200	x2984
616D	Longest k-Good Segment binary search, data structures, two pointers	1600	x9734
616C	The Labyrinth dfs and similar	1600	x5762
616B	Dinner with Emma games, greedy	1000	x11997
616A	Comparing Two Long Integers implementation, strings	900	x9961
615E	Hexagons binary search, implementation, math	2100	x987
615D	Multipliers math, number theory	2000	x3944
615C	Running Track dp, greedy, strings, trees	2000	x2331
615B	Longtail Hedgehog dp, graphs	1600	x5128
615A	Bulbs implementation	800	x17524
614B	Gena's Code implementation, math	1400	x6929
614A	Link/Cut Tree brute force, implementation	1500	x7489
613E	Puzzle Lover dp, hashing, strings	3200	x474
613D	Kingdom and its Cities dfs and similar, divide and conquer, dp, graphs, sortings, trees	2800	x3066
613C	Necklace constructive algorithms, math	2500	x1015
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2242
613A	Peter and Snow Blower binary search, geometry, ternary search	1900	x3249
612F	Simba on the Circle dp	2600	x392
612E	Square Root of Permutation combinatorics, constructive algorithms, dfs and similar, graphs, math	2200	x1719
612D	The Union of k-Segments greedy, sortings	1800	x3897
612C	Replace To Make Regular Bracket Sequence data structures, expression parsing, math	1400	x8199
612B	HDD is Outdated Technology implementation, math	1200	x7127
612A	The Text Splitting brute force, implementation, strings	1300	x7298
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
611C	New Year and Domino dp, implementation	1500	x8511