Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
622C	Not Equal on a Segment data structures, implementation	1700	x6579
622B	The Time implementation	900	x9555
622A	Infinite Sequence implementation, math	1000	x9275
621E	Wet Shark and Blocks dp, matrices	2000	x2848
621D	Rat Kwesh and Cheese brute force, constructive algorithms, math	2400	x986
621C	Wet Shark and Flowers combinatorics, math, number theory, probabilities	1700	x5466
621B	Wet Shark and Bishops combinatorics, implementation	1300	x10975
621A	Wet Shark and Odd and Even implementation	900	x20450
620F	Xors on Segments data structures, strings, trees	2800	x735
620E	New Year Tree bitmasks, data structures, trees	2100	x5589
620D	Professor GukiZ and Two Arrays binary search, two pointers	2200	x1701
620C	Pearls in a Row greedy	1500	x6705
620B	Grandfather Dovlet’s calculator implementation	1000	x9472
620A	Professor GukiZ's Robot implementation, math	800	x13101
618G	Combining Slimes dp, math, matrices, probabilities	3300	x241
618F	Double Knapsack constructive algorithms, two pointers	3000	x1388
618E	Robot Arm data structures, geometry	2500	x644
618D	Hamiltonian Spanning Tree dfs and similar, dp, graph matchings, greedy, trees	2200	x1718
618C	Constellation geometry, implementation	1600	x4239
618B	Guess the Permutation constructive algorithms	1100	x7972
618A	Slime Combining implementation	800	x8335
617E	XOR and Favorite Number data structures	2200	x8394
617D	Polyline constructive algorithms, implementation	1700	x4203
617C	Watering Flowers implementation	1600	x4863
617B	Chocolate combinatorics	1300	x17889
617A	Elephant math	800	x184633
616F	Expensive Strings data structures, sortings, string suffix structures, strings	2700	x599
616E	Sum of Remainders implementation, math, number theory	2200	x2905
616D	Longest k-Good Segment binary search, data structures, two pointers	1600	x9479
616C	The Labyrinth dfs and similar	1600	x5604
616B	Dinner with Emma games, greedy	1000	x11876
616A	Comparing Two Long Integers implementation, strings	900	x9820
615E	Hexagons binary search, implementation, math	2100	x978
615D	Multipliers math, number theory	2000	x3889
615C	Running Track dp, greedy, strings, trees	2000	x2323
615B	Longtail Hedgehog dp, graphs	1600	x5097
615A	Bulbs implementation	800	x17295
614B	Gena's Code implementation, math	1400	x6908
614A	Link/Cut Tree brute force, implementation	1500	x7460
613E	Puzzle Lover dp, hashing, strings	3200	x464
613D	Kingdom and its Cities dfs and similar, divide and conquer, dp, graphs, sortings, trees	2800	x2944
613C	Necklace constructive algorithms, math	2500	x1006
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2214
613A	Peter and Snow Blower binary search, geometry, ternary search	1900	x3221
612F	Simba on the Circle dp	2600	x385
612E	Square Root of Permutation combinatorics, constructive algorithms, dfs and similar, graphs, math	2200	x1686
612D	The Union of k-Segments greedy, sortings	1800	x3829
612C	Replace To Make Regular Bracket Sequence data structures, expression parsing, math	1400	x8010
612B	HDD is Outdated Technology implementation, math	1200	x7022
612A	The Text Splitting brute force, implementation, strings	1300	x7213
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	x480
611E	New Year and Three Musketeers data structures, greedy, sortings	2400	x866
611D	New Year and Ancient Prophecy dp, hashing, strings	2000	x2588
611C	New Year and Domino dp, implementation	1500	x8481
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x10075
611A	New Year and Days implementation	900	x11646
610E	Alphabet Permutations data structures, strings	2500	x878
610D	Vika and Segments constructive algorithms, data structures, geometry, two pointers	2300	x1495
610C	Harmony Analysis constructive algorithms	1800	x2841
610B	Vika and Squares constructive algorithms, implementation	1300	x7259
610A	Pasha and Stick combinatorics, math	1000	x23157
609F	Frogs and mosquitoes data structures, greedy	2500	x1243
609E	Minimum spanning tree for each edge data structures, dfs and similar, dsu, graphs, trees	2100	x7783
609D	Gadgets for dollars and pounds binary search, greedy, two pointers	2000	x2707
609C	Load Balancing implementation, math	1500	x6576
609B	The Best Gift constructive algorithms, implementation	1100	x9048
609A	USB Flash Drives greedy, implementation, sortings	800	x17228
608B	Hamming Distance Sum combinatorics, strings	1500	x6814
608A	Saitama Destroys Hotel implementation, math	1000	x9338
607E	Cross Sum binary search, geometry	3300	x252
607D	Power Tree data structures, trees	2600	x569
607C	Marbles hashing, strings	2500	x790
607B	Zuma dp	1900	x12168
607A	Chain Reaction binary search, dp	1600	x9555
606B	Testing Robots implementation	1600	x2751
606A	Magic Spheres implementation	1200	x7973
605E	Intergalaxy Trips probabilities, shortest paths	2700	x1381
605D	Board Game data structures, dfs and similar	2500	x801
605C	Freelancer's Dreams geometry	2400	x1121
605B	Lazy Student constructive algorithms, data structures, graphs	1700	x3447
605A	Sorting Railway Cars constructive algorithms, greedy	1600	x7123
604B	More Cowbell binary search, greedy	1400	x8445
604A	Uncowed Forces implementation	1000	x8970
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x1236
603D	Ruminations on Ruminants geometry, math	2900	x340
603C	Lieges of Legendre games, math	2200	x1873
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	1800	x2578
603A	Alternative Thinking dp, greedy, math	1600	x7646
602B	Approximating a Constant Range dp, implementation, two pointers	1400	x10819
602A	Two Bases brute force, implementation	1100	x8478
601E	A Museum Robbery data structures, dp	2800	x871
601D	Acyclic Organic Compounds data structures, dfs and similar, dsu, hashing, strings, trees	2400	x1146
601C	Kleofáš and the n-thlon dp, math, probabilities	2300	x1314
601B	Lipshitz Sequence data structures, math	2100	x2326
601A	The Two Routes graphs, shortest paths	1600	x11921
600F	Edge coloring of bipartite graph graphs	2800	x798
600E	Lomsat gelral data structures, dfs and similar, dsu, trees	2300	x13866
600D	Area of Two Circles' Intersection geometry	2000	x2275