Problemset - Codeforces

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Problems

#	Name
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x9436
1698C	3SUM Closure brute force, data structures	1300	x18606
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20982
1698A	XOR Mixup bitmasks, brute force	800	x29399
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x570
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1239
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x4487
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14465
1697B	Promo greedy, sortings	900	x26922
1697A	Parkway Walk greedy, implementation	800	x25799
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x164
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x278
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x889
1696E	Placing Jinas combinatorics, math	2000	x4102
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x5497
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11696
1696B	NIT Destroys the Universe greedy	900	x21866
1696A	NIT orz! bitmasks, greedy	800	x18876
1695E	Ambiguous Dominoes constructive algorithms, dfs and similar, graphs	2700	x453
1695D2	Tree Queries (Hard Version) constructive algorithms, dfs and similar, dp, greedy, trees	2300	x2024
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2198
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x11020
1695B	Circle Game games, greedy	1000	x18578
1695A	Subrectangle Guess games	800	x16375
1694B	Paranoid String constructive algorithms, greedy	1200	x19245
1694A	Creep greedy, implementation	800	x22716
1693F	I Might Be Wrong binary search, greedy, two pointers	3400	x418
1693E	Outermost Maximums data structures, greedy	3400	x431
1693D	Decinc Dividing brute force, data structures, divide and conquer, dp, greedy	2800	x853
1693C	Keshi in Search of AmShZ graphs, greedy, shortest paths	2300	x2648
1693B	Fake Plastic Trees dfs and similar, dp, greedy, trees	1700	x8560
1693A	Directional Increase greedy	1300	x16235
1692H	Gambling data structures, dp, greedy, math	1700	x7541
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x18103
1692F	3SUM brute force, math	1300	x23090
1692E	Binary Deque binary search, implementation, two pointers	1200	x22436
1692D	The Clock brute force, implementation	1100	x19577
1692C	Where's the Bishop? implementation	800	x34545
1692B	All Distinct greedy, sortings	800	x34517
1692A	Marathon implementation	800	x66605
1691F	K-Set Tree combinatorics, dfs and similar, dp, math, trees	2500	x994
1691E	Number of Groups data structures, dfs and similar, dsu, graphs, greedy, sortings	2300	x1852
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x5868
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x15752
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x23510
1691A	Beat The Odds brute force, greedy, math	800	x30659
1690G	Count the Trains binary search, data structures, greedy, sortings	2000	x3429
1690F	Shifting String graphs, math, number theory, strings	1700	x7219
1690E	Price Maximization binary search, greedy, math, two pointers	1500	x15331
1690D	Black and White Stripe implementation, two pointers	1000	x30446
1690C	Restoring the Duration of Tasks data structures, greedy, implementation	800	x26305
1690B	Array Decrements greedy, implementation	800	x25539
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x33710
1689E	ANDfinity bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2500	x1222
1689D	Lena and Matrix data structures, dp, geometry, shortest paths	1900	x4246
1689C	Infected Tree dfs and similar, dp, trees	1600	x11373
1689B	Mystic Permutation data structures, greedy	900	x17600
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16832
1688C	Manipulating History constructive algorithms, greedy, strings	1700	x8196
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x18331
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x21772
1687F	Koishi's Unconscious Permutation fft, math	3500	x86
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x233
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x605
1687C	Sanae and Giant Robot binary search, brute force, data structures, dsu, greedy, sortings	2500	x1436
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3675
1687A	The Enchanted Forest brute force, greedy	1600	x10457
1686B	Odd Subarrays dp, greedy	800	x18327
1686A	Everything Everywhere All But One greedy	800	x20520
1685E	The Ultimate LIS Problem data structures, greedy	3500	x151
1685D2	Permutation Weight (Hard Version) constructive algorithms, greedy	3500	x108
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x445
1685C	Bring Balance brute force, constructive algorithms, greedy	2600	x1093
1685B	Linguistics greedy, implementation, sortings, strings	2000	x3298
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x17209
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x241
1684G	Euclid Guess constructive algorithms, flows, graph matchings, math, number theory	2800	x619
1684F	Diverse Segments data structures, two pointers	2600	x922
1684E	MEX vs DIFF binary search, brute force, constructive algorithms, data structures, greedy, two pointers	2100	x3193
1684D	Traps constructive algorithms, greedy, sortings	1700	x9758
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12410
1684B	Z mod X = C constructive algorithms, math	800	x21043
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x23952
1682F	MCMF? data structures, flows, graphs, greedy, sortings, two pointers	2700	x318
1682E	Unordered Swaps constructive algorithms, dfs and similar, graphs, greedy, math, sortings, trees	2700	x626
1682D	Circular Spanning Tree constructive algorithms, implementation, trees	2000	x3344
1682C	LIS or Reverse LIS? constructive algorithms, greedy, implementation, math	1400	x14884
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x18876
1682A	Palindromic Indices greedy, strings	800	x19329
1681F	Unique Occurrences data structures, dfs and similar, divide and conquer, dp, dsu, trees	2300	x1800
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x802
1681D	Required Length brute force, dfs and similar, dp, hashing, shortest paths	1700	x9730
1681C	Double Sort implementation, sortings	1200	x17469
1681B	Card Trick implementation, math	800	x20164
1681A	Game with Cards games, greedy	800	x21033
1680F	Lenient Vertex Cover dfs and similar, divide and conquer, dsu, graphs, trees	2600	x678
1680E	Moving Chips bitmasks, dp, greedy	2000	x3823
1680D	Dog Walking brute force, greedy, math	2400	x1181
1680C	Binary String binary search, greedy, strings, two pointers	1600	x10018
1680B	Robots implementation	800	x18425