Problemset - Codeforces

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Problems

#	Name
630I	Parking Lot combinatorics, math	1700	x6940
630H	Benches combinatorics, math	1400	x5073
630G	Challenge Pennants combinatorics, math	1600	x2860
630F	Selection of Personnel combinatorics, math	1300	x7020
630E	A rectangle math	1900	x2348
630D	Hexagons! math	1100	x11183
630C	Lucky Numbers combinatorics, math	1100	x22570
630B	Moore's Law math	1200	x7512
630A	Again Twenty Five! number theory	800	x71330
629E	Famil Door and Roads combinatorics, data structures, dfs and similar, dp, probabilities, trees	2300	x1027
629D	Babaei and Birthday Cake data structures, dp	2000	x4087
629C	Famil Door and Brackets dp, strings	2000	x2816
629B	Far Relative’s Problem brute force	1100	x8062
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13594
628F	Bear and Fair Set flows, graphs	2500	x808
628E	Zbazi in Zeydabad data structures, implementation	2300	x924
628D	Magic Numbers dp	2200	x6222
628C	Bear and String Distance greedy, strings	1300	x5893
628B	New Skateboard dp	1300	x11009
628A	Tennis Tournament implementation, math	1000	x6441
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x239
627E	Orchestra two pointers	3000	x597
627D	Preorder Test binary search, dfs and similar, dp, graphs, greedy, trees	2600	x887
627C	Package Delivery data structures, divide and conquer, greedy	2200	x1177
627B	Factory Repairs data structures	1700	x2939
627A	XOR Equation dp, math	1700	x4258
626G	Raffles data structures, dp, greedy, math	3100	x542
626F	Group Projects dp	2400	x3008
626E	Simple Skewness binary search, math, ternary search	2400	x1416
626D	Jerry's Protest brute force, combinatorics, dp, probabilities	1800	x2775
626C	Block Towers brute force, greedy, math, number theory	1600	x4366
626B	Cards constructive algorithms, dp, math	1300	x6641
626A	Robot Sequence brute force, implementation	1000	x6279
625E	Frog Fights data structures, greedy	2800	x348
625D	Finals in arithmetic constructive algorithms, implementation, math	2400	x638
625C	K-special Tables constructive algorithms, implementation	1300	x6852
625B	War of the Corporations constructive algorithms, greedy, strings	1200	x10499
625A	Guest From the Past implementation, math	1700	x5426
624B	Making a String greedy, sortings	1100	x8010
624A	Save Luke math	800	x10540
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x552
623D	Birthday greedy, math, probabilities	2700	x500
623C	Electric Charges binary search, dp	2900	x482
623B	Array GCD dp, greedy, number theory	2300	x2170
623A	Graph and String constructive algorithms, graphs	1800	x4520
622F	The Sum of the k-th Powers math	2600	x3965
622E	Ants in Leaves dfs and similar, greedy, sortings, trees	2200	x2118
622D	Optimal Number Permutation constructive algorithms	1900	x3021
622C	Not Equal on a Segment data structures, implementation	1700	x6773
622B	The Time implementation	900	x9734
622A	Infinite Sequence implementation, math	1000	x9481
621E	Wet Shark and Blocks dp, matrices	2000	x2884
621D	Rat Kwesh and Cheese brute force, constructive algorithms, math	2400	x1001
621C	Wet Shark and Flowers combinatorics, math, number theory, probabilities	1700	x5606
621B	Wet Shark and Bishops combinatorics, implementation	1300	x11084
621A	Wet Shark and Odd and Even implementation	900	x20844
620F	Xors on Segments data structures, strings, trees	2800	x749
620E	New Year Tree bitmasks, data structures, trees	2100	x5837
620D	Professor GukiZ and Two Arrays binary search, two pointers	2200	x1762
620C	Pearls in a Row greedy	1500	x6921
620B	Grandfather Dovlet’s calculator implementation	1000	x9737
620A	Professor GukiZ's Robot implementation, math	800	x13347
618G	Combining Slimes dp, math, matrices, probabilities	3300	x242
618F	Double Knapsack constructive algorithms, two pointers	3000	x1413
618E	Robot Arm data structures, geometry	2500	x646
618D	Hamiltonian Spanning Tree dfs and similar, dp, graph matchings, greedy, trees	2200	x1752
618C	Constellation geometry, implementation	1600	x4341
618B	Guess the Permutation constructive algorithms	1100	x8011
618A	Slime Combining implementation	800	x8407
617E	XOR and Favorite Number data structures	2200	x8645
617D	Polyline constructive algorithms, implementation	1700	x4235
617C	Watering Flowers implementation	1600	x4909
617B	Chocolate combinatorics	1300	x18201
617A	Elephant math	800	x193737
616F	Expensive Strings data structures, sortings, string suffix structures, strings	2700	x609
616E	Sum of Remainders implementation, math, number theory	2200	x3001
616D	Longest k-Good Segment binary search, data structures, two pointers	1600	x9854
616C	The Labyrinth dfs and similar	1600	x5854
616B	Dinner with Emma games, greedy	1000	x12060
616A	Comparing Two Long Integers implementation, strings	900	x9998
615E	Hexagons binary search, implementation, math	2100	x988
615D	Multipliers math, number theory	2000	x3971
615C	Running Track dp, greedy, strings, trees	2000	x2334
615B	Longtail Hedgehog dp, graphs	1600	x5170
615A	Bulbs implementation	800	x17683
614B	Gena's Code implementation, math	1400	x6956
614A	Link/Cut Tree brute force, implementation	1500	x7507
613E	Puzzle Lover dp, hashing, strings	3200	x475
613D	Kingdom and its Cities dfs and similar, divide and conquer, dp, graphs, sortings, trees	2800	x3138
613C	Necklace constructive algorithms, math	2500	x1019
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2246
613A	Peter and Snow Blower binary search, geometry, ternary search	1900	x3259
612F	Simba on the Circle dp	2600	x394
612E	Square Root of Permutation combinatorics, constructive algorithms, dfs and similar, graphs, math	2200	x1730
612D	The Union of k-Segments greedy, sortings	1800	x3933
612C	Replace To Make Regular Bracket Sequence data structures, expression parsing, math	1400	x8268
612B	HDD is Outdated Technology implementation, math	1200	x7160
612A	The Text Splitting brute force, implementation, strings	1300	x7329
611H	New Year and Forgotten Tree constructive algorithms, flows, graphs	3200	x585
611G	New Year and Cake geometry, two pointers	2900	x438