Problemset - Codeforces

→ Pay attention

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

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
630E	A rectangle math	1900	x2339
630D	Hexagons! math	1100	x11103
630C	Lucky Numbers combinatorics, math	1100	x22331
630B	Moore's Law math	1200	x7463
630A	Again Twenty Five! number theory	800	x69953
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	x4057
629C	Famil Door and Brackets dp, strings	2000	x2803
629B	Far Relative’s Problem brute force	1100	x8055
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13477
628F	Bear and Fair Set flows, graphs	2500	x778
628E	Zbazi in Zeydabad data structures, implementation	2300	x897
628D	Magic Numbers dp	2200	x6152
628C	Bear and String Distance greedy, strings	1300	x5868
628B	New Skateboard dp	1300	x10905
628A	Tennis Tournament implementation, math	1000	x6415
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	x1176
627B	Factory Repairs data structures	1700	x2935
627A	XOR Equation dp, math	1700	x4248
626G	Raffles data structures, dp, greedy, math	3100	x538
626F	Group Projects dp	2400	x2970
626E	Simple Skewness binary search, math, ternary search	2400	x1393
626D	Jerry's Protest brute force, combinatorics, dp, probabilities	1800	x2767
626C	Block Towers brute force, greedy, math, number theory	1600	x4357
626B	Cards constructive algorithms, dp, math	1300	x6633
626A	Robot Sequence brute force, implementation	1000	x6268
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	x10466
625A	Guest From the Past implementation, math	1700	x5424
624B	Making a String greedy, sortings	1100	x8000
624A	Save Luke math	800	x10381
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	x3906
622E	Ants in Leaves dfs and similar, greedy, sortings, trees	2200	x2104
622D	Optimal Number Permutation constructive algorithms	1900	x3013
622C	Not Equal on a Segment data structures, implementation	1700	x6734
622B	The Time implementation	900	x9681
622A	Infinite Sequence implementation, math	1000	x9419
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	x20724
620F	Xors on Segments data structures, strings, trees	2800	x743
620E	New Year Tree bitmasks, data structures, trees	2100	x5722
620D	Professor GukiZ and Two Arrays binary search, two pointers	2200	x1730
620C	Pearls in a Row greedy	1500	x6857
620B	Grandfather Dovlet’s calculator implementation	1000	x9651
620A	Professor GukiZ's Robot implementation, math	800	x13292
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	x1747
618C	Constellation geometry, implementation	1600	x4297
618B	Guess the Permutation constructive algorithms	1100	x7999
618A	Slime Combining implementation	800	x8365
617E	XOR and Favorite Number data structures	2200	x8555
617D	Polyline constructive algorithms, implementation	1700	x4226
617C	Watering Flowers implementation	1600	x4881
617B	Chocolate combinatorics	1300	x18107
617A	Elephant math	800	x190117
616F	Expensive Strings data structures, sortings, string suffix structures, strings	2700	x608
616E	Sum of Remainders implementation, math, number theory	2200	x2983
616D	Longest k-Good Segment binary search, data structures, two pointers	1600	x9726
616C	The Labyrinth dfs and similar	1600	x5710
616B	Dinner with Emma games, greedy	1000	x11995
616A	Comparing Two Long Integers implementation, strings	900	x9959
615E	Hexagons binary search, implementation, math	2100	x987
615D	Multipliers math, number theory	2000	x3942
615C	Running Track dp, greedy, strings, trees	2000	x2331
615B	Longtail Hedgehog dp, graphs	1600	x5125
615A	Bulbs implementation	800	x17509
614B	Gena's Code implementation, math	1400	x6928
614A	Link/Cut Tree brute force, implementation	1500	x7487
613E	Puzzle Lover dp, hashing, strings	3200	x474
613D	Kingdom and its Cities dfs and similar, divide and conquer, dp, graphs, sortings, trees	2800	x3060
613C	Necklace constructive algorithms, math	2500	x1015
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2239
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	x1718
612D	The Union of k-Segments greedy, sortings	1800	x3896
612C	Replace To Make Regular Bracket Sequence data structures, expression parsing, math	1400	x8192
612B	HDD is Outdated Technology implementation, math	1200	x7124
612A	The Text Splitting brute force, implementation, strings	1300	x7296
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	x8510