Problemset - Codeforces

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Codeforces Round (Div. 2)
5 days

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Problems

#	Name
1702D	Not a Cheap String greedy	1000	x26017
1702C	Train and Queries data structures, greedy	1100	x25233
1702B	Polycarp Writes a String from Memory greedy	800	x29380
1702A	Round Down the Price constructive algorithms	800	x38282
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x1137
1701E	Text Editor brute force, dp, greedy, strings	2500	x1352
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x6277
1701C	Schedule Management binary search, greedy, implementation, two pointers	1400	x24075
1701B	Permutation greedy	800	x20821
1701A	Grass Field implementation	800	x27566
1700F	Puzzle constructive algorithms, dp, greedy	2600	x1064
1700E	Serega the Pirate brute force, constructive algorithms	2600	x960
1700D	River Locks binary search, dp, greedy, math	1900	x7034
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x12193
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x19915
1700A	Optimal Path constructive algorithms, greedy, math	800	x23695
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1383
1699D	Almost Triple Deletions data structures, dp, greedy	2300	x3527
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x10764
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x21751
1699A	The Third Three Number Problem constructive algorithms, math	800	x24836
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x384
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x759
1698E	PermutationForces II brute force, combinatorics, greedy, sortings, trees, two pointers	2300	x1794
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x12163
1698C	3SUM Closure brute force, data structures	1300	x19783
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x21478
1698A	XOR Mixup bitmasks, brute force	800	x32974
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x730
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1451
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x5005
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x15828
1697B	Promo greedy, sortings	900	x30993
1697A	Parkway Walk greedy, implementation	800	x26761
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x203
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x322
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x1138
1696E	Placing Jinas combinatorics, math	2000	x4937
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x6024
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x12592
1696B	NIT Destroys the Universe greedy	900	x36846
1696A	NIT orz! bitmasks, greedy	800	x20299
1695E	Ambiguous Dominoes constructive algorithms, dfs and similar, graphs	2700	x514
1695D2	Tree Queries (Hard Version) constructive algorithms, dfs and similar, dp, greedy, trees	2300	x2299
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2463
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x14141
1695B	Circle Game games, greedy	1000	x20010
1695A	Subrectangle Guess games	800	x16805
1694B	Paranoid String constructive algorithms, greedy	1200	x20688
1694A	Creep greedy, implementation	800	x23555
1693F	I Might Be Wrong binary search, greedy, two pointers	3400	x616
1693E	Outermost Maximums data structures, greedy	3400	x559
1693D	Decinc Dividing brute force, data structures, divide and conquer, dp, greedy	2800	x1111
1693C	Keshi in Search of AmShZ graphs, greedy, shortest paths	2300	x3199
1693B	Fake Plastic Trees dfs and similar, dp, greedy, trees	1700	x9629
1693A	Directional Increase greedy	1300	x17494
1692H	Gambling data structures, dp, greedy, math	1700	x9678
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x26682
1692F	3SUM brute force, math	1300	x27384
1692E	Binary Deque binary search, implementation, two pointers	1200	x33744
1692D	The Clock brute force, implementation	1100	x21700
1692C	Where's the Bishop? implementation	800	x39039
1692B	All Distinct greedy, sortings	800	x39543
1692A	Marathon implementation	800	x86203
1691F	K-Set Tree combinatorics, dfs and similar, dp, math, trees	2500	x1138
1691E	Number of Groups data structures, dfs and similar, dsu, graphs, greedy, sortings	2300	x2101
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x7530
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x17276
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x35721
1691A	Beat The Odds brute force, greedy, math	800	x32233
1690G	Count the Trains binary search, data structures, greedy, sortings	2000	x4141
1690F	Shifting String graphs, math, number theory, strings	1700	x8937
1690E	Price Maximization binary search, greedy, math, two pointers	1500	x17046
1690D	Black and White Stripe implementation, two pointers	1000	x47692
1690C	Restoring the Duration of Tasks data structures, greedy, implementation	800	x28130
1690B	Array Decrements greedy, implementation	800	x26959
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x35675
1689E	ANDfinity bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2500	x1364
1689D	Lena and Matrix data structures, dp, geometry, shortest paths	1900	x4766
1689C	Infected Tree dfs and similar, dp, trees	1600	x13551
1689B	Mystic Permutation data structures, greedy	900	x19088
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x17738
1688C	Manipulating History constructive algorithms, greedy, strings	1700	x8777
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x19060
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x23568
1687F	Koishi's Unconscious Permutation fft, math	3500	x109
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x312
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x737
1687C	Sanae and Giant Robot binary search, brute force, data structures, dsu, greedy, sortings	2500	x1691
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x4150
1687A	The Enchanted Forest brute force, greedy	1600	x11448
1686B	Odd Subarrays dp, greedy	800	x19388
1686A	Everything Everywhere All But One greedy	800	x21254
1685E	The Ultimate LIS Problem data structures, greedy	3500	x196
1685D2	Permutation Weight (Hard Version) constructive algorithms, greedy	3500	x132
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x518
1685C	Bring Balance brute force, constructive algorithms, greedy	2600	x1348
1685B	Linguistics greedy, implementation, sortings, strings	2000	x3684
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x18619
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x289

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