Problemset - Codeforces

Problems

#	Name
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x11268
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x19194
1700A	Optimal Path constructive algorithms, greedy, math	800	x23181
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1247
1699D	Almost Triple Deletions data structures, dp, greedy	2300	x3244
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x10035
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x20201
1699A	The Third Three Number Problem constructive algorithms, math	800	x24233
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x331
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x679
1698E	PermutationForces II brute force, combinatorics, greedy, sortings, trees, two pointers	2300	x1675
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x9984
1698C	3SUM Closure brute force, data structures	1300	x18894
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x21086
1698A	XOR Mixup bitmasks, brute force	800	x30095
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x586
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1268
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x4589
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14817
1697B	Promo greedy, sortings	900	x27672
1697A	Parkway Walk greedy, implementation	800	x26062
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x172
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x288
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x1016
1696E	Placing Jinas combinatorics, math	2000	x4253
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x5595
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11969
1696B	NIT Destroys the Universe greedy	900	x23717
1696A	NIT orz! bitmasks, greedy	800	x19113
1695E	Ambiguous Dominoes constructive algorithms, dfs and similar, graphs	2700	x460
1695D2	Tree Queries (Hard Version) constructive algorithms, dfs and similar, dp, greedy, trees	2300	x2073
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2244
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x11396
1695B	Circle Game games, greedy	1000	x18906
1695A	Subrectangle Guess games	800	x16475
1694B	Paranoid String constructive algorithms, greedy	1200	x19592
1694A	Creep greedy, implementation	800	x22968
1693F	I Might Be Wrong binary search, greedy, two pointers	3400	x483
1693E	Outermost Maximums data structures, greedy	3400	x449
1693D	Decinc Dividing brute force, data structures, divide and conquer, dp, greedy	2800	x963
1693C	Keshi in Search of AmShZ graphs, greedy, shortest paths	2300	x2726
1693B	Fake Plastic Trees dfs and similar, dp, greedy, trees	1700	x8822
1693A	Directional Increase greedy	1300	x16593
1692H	Gambling data structures, dp, greedy, math	1700	x7870
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x19518
1692F	3SUM brute force, math	1300	x24030
1692E	Binary Deque binary search, implementation, two pointers	1200	x24106
1692D	The Clock brute force, implementation	1100	x20131
1692C	Where's the Bishop? implementation	800	x35803
1692B	All Distinct greedy, sortings	800	x35634
1692A	Marathon implementation	800	x70538
1691F	K-Set Tree combinatorics, dfs and similar, dp, math, trees	2500	x1025
1691E	Number of Groups data structures, dfs and similar, dsu, graphs, greedy, sortings	2300	x1890
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x6065
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x16152
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x25018
1691A	Beat The Odds brute force, greedy, math	800	x31010
1690G	Count the Trains binary search, data structures, greedy, sortings	2000	x3556
1690F	Shifting String graphs, math, number theory, strings	1700	x7450
1690E	Price Maximization binary search, greedy, math, two pointers	1500	x15735
1690D	Black and White Stripe implementation, two pointers	1000	x32881
1690C	Restoring the Duration of Tasks data structures, greedy, implementation	800	x26700
1690B	Array Decrements greedy, implementation	800	x25978
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x34217
1689E	ANDfinity bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2500	x1251
1689D	Lena and Matrix data structures, dp, geometry, shortest paths	1900	x4342
1689C	Infected Tree dfs and similar, dp, trees	1600	x11770
1689B	Mystic Permutation data structures, greedy	900	x17947
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16936
1688C	Manipulating History constructive algorithms, greedy, strings	1700	x8369
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x18490
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x22106
1687F	Koishi's Unconscious Permutation fft, math	3500	x92
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x263
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x626
1687C	Sanae and Giant Robot binary search, brute force, data structures, dsu, greedy, sortings	2500	x1515
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3812
1687A	The Enchanted Forest brute force, greedy	1600	x10649
1686B	Odd Subarrays dp, greedy	800	x18553
1686A	Everything Everywhere All But One greedy	800	x20655
1685E	The Ultimate LIS Problem data structures, greedy	3500	x159
1685D2	Permutation Weight (Hard Version) constructive algorithms, greedy	3500	x112
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x459
1685C	Bring Balance brute force, constructive algorithms, greedy	2600	x1132
1685B	Linguistics greedy, implementation, sortings, strings	2000	x3397
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x17678
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x251
1684G	Euclid Guess constructive algorithms, flows, graph matchings, math, number theory	2800	x648
1684F	Diverse Segments data structures, two pointers	2600	x974
1684E	MEX vs DIFF binary search, brute force, constructive algorithms, data structures, greedy, two pointers	2100	x3277
1684D	Traps constructive algorithms, greedy, sortings	1700	x10029
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12675
1684B	Z mod X = C constructive algorithms, math	800	x21215
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x24175
1682F	MCMF? data structures, flows, graphs, greedy, sortings, two pointers	2700	x330
1682E	Unordered Swaps constructive algorithms, dfs and similar, graphs, greedy, math, sortings, trees	2700	x641
1682D	Circular Spanning Tree constructive algorithms, implementation, trees	2000	x3417
1682C	LIS or Reverse LIS? constructive algorithms, greedy, implementation, math	1400	x15379
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x19793
1682A	Palindromic Indices greedy, strings	800	x19477