Problemset - Codeforces

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Codeforces Round (Div. 3)
4 days

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Problems

#	Name
1714F	Build a Tree and That Is It constructive algorithms, implementation, trees	1900	x3139
1714B	Remove Prefix data structures, greedy, implementation	800	x29736
1714A	Everyone Loves to Sleep implementation, math	900	x29061
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x21761
1712A	Wonderful Permutation greedy, implementation	800	x23858
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2394
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8646
1709B	Also Try Minecraft data structures, dp, implementation	900	x22241
1709A	Three Doors brute force, greedy, implementation, math	800	x29274
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5614
1707A	Doremy's IQ binary search, constructive algorithms, greedy, implementation	1600	x13165
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x14593
1705C	Mark and His Unfinished Essay brute force, implementation	1400	x13125
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x22414
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2250
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x4925
1704C	Virus greedy, implementation, sortings	1200	x15017
1704B	Luke is a Foodie brute force, greedy, implementation	1000	x17021
1703E	Mirror Grid implementation	1200	x17490
1703C	Cypher brute force, implementation, strings	800	x34742
1703B	ICPC Balloons data structures, implementation	800	x46985
1703A	YES or YES? brute force, implementation, strings	800	x65352
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x905
1701C	Schedule Management binary search, greedy, implementation, two pointers	1400	x16248
1701A	Grass Field implementation	800	x25996
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18450
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x598
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20745
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x540
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1152
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14099
1697A	Parkway Walk greedy, implementation	800	x25538
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x156
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11406
1694A	Creep greedy, implementation	800	x22296
1692E	Binary Deque binary search, implementation, two pointers	1200	x20789
1692D	The Clock brute force, implementation	1100	x19018
1692C	Where's the Bishop? implementation	800	x33083
1692A	Marathon implementation	800	x61968
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x5619
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x21990
1690D	Black and White Stripe implementation, two pointers	1000	x27896
1690C	Restoring the Duration of Tasks data structures, greedy, implementation	800	x25686
1690B	Array Decrements greedy, implementation	800	x24970
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16461
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x565
1685B	Linguistics greedy, implementation, sortings, strings	2000	x3211
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12149
1682D	Circular Spanning Tree constructive algorithms, implementation, trees	2000	x3228
1682C	LIS or Reverse LIS? constructive algorithms, greedy, implementation, math	1400	x14403
1681C	Double Sort implementation, sortings	1200	x17137
1681B	Card Trick implementation, math	800	x19940
1680B	Robots implementation	800	x18150
1679C	Rooks Defenders data structures, implementation	1400	x10066
1679B	Stone Age Problem data structures, implementation	1200	x17577
1678B2	Tokitsukaze and Good 01-String (hard version) dp, greedy, implementation	1800	x6479
1678B1	Tokitsukaze and Good 01-String (easy version) implementation	800	x15790
1678A	Tokitsukaze and All Zero Sequence implementation	800	x18019
1677B	Tokitsukaze and Meeting data structures, implementation, math	1700	x4086
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x16221
1676D	X-Sum brute force, greedy, implementation	1000	x24516
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x29344
1676A	Lucky? implementation	800	x60467
1675D	Vertical Paths graphs, implementation, trees	1300	x12761
1675C	Detective Task implementation	1100	x17959
1675B	Make It Increasing greedy, implementation	900	x25656
1674F	Desktop Rearrangement data structures, greedy, implementation	1800	x4943
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x15975
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x23179
1672D	Cyclic Rotation constructive algorithms, greedy, implementation, two pointers	1700	x6120
1672C	Unequal Array constructive algorithms, greedy, implementation	1100	x13066
1672B	I love AAAB constructive algorithms, implementation	800	x15688
1672A	Log Chopping games, implementation, math	800	x15962
1671A	String Building implementation	800	x20289
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x5016
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x9637
1670B	Dorms War brute force, implementation, strings	1100	x12514
1670A	Prof. Slim greedy, implementation, sortings	800	x15300
1669G	Fall Down dfs and similar, implementation	1200	x17715
1669D	Colorful Stamp implementation	1100	x21548
1669C	Odd/Even Increments greedy, greedy, implementation, math	800	x33610
1669B	Triple implementation, sortings	800	x41188
1669A	Division? implementation	800	x59439
1668A	Direction Change implementation, math	800	x16217
1667F	Yin Yang implementation	3500	x93
1666F	Fancy Stack combinatorics, dp, implementation	2200	x1127
1665E	MinimizOR bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers	2500	x1457
1663E	Are You Safe? *special problem, implementation		x546
1663C	Pōja Verdon *special problem, implementation, math		x5639
1663B	Mike's Sequence *special problem, divide and conquer, implementation, math		x3368
1662O	Circular Maze brute force, dfs and similar, graphs, implementation		x1291
1662I	Ice Cream Shop brute force, implementation, sortings		x2002
1662F	Antennas data structures, dfs and similar, graphs, graphs, implementation, implementation, shortest paths, shortest paths		x984
1662D	Evolution of Weasels greedy, implementation, strings		x1709
1662A	Organizing SWERC brute force, implementation		x4208
1660F2	Promising String (hard version) data structures, implementation, math, strings	2100	x2641
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x7100
1660E	Matrix and Shifts brute force, constructive algorithms, greedy, implementation	1600	x7094
1660D	Maximum Product Strikes Back brute force, implementation, math, two pointers	1600	x8388
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x3926