Problemset - Codeforces

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Problems

#	Name
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5663
1701C	Schedule Management binary search, greedy, implementation, two pointers	1400	x16889
1701B	Permutation greedy	800	x20171
1701A	Grass Field implementation	800	x26226
1700F	Puzzle constructive algorithms, dp, greedy	2600	x927
1700E	Serega the Pirate brute force, constructive algorithms	2600	x851
1700D	River Locks binary search, dp, greedy, math	1900	x6075
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x10884
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18679
1700A	Optimal Path constructive algorithms, greedy, math	800	x22838
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1139
1699D	Almost Triple Deletions data structures, dp, greedy	2300	x3139
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9740
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19668
1699A	The Third Three Number Problem constructive algorithms, math	800	x23962
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x315
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x623
1698E	PermutationForces II brute force, combinatorics, greedy, sortings, trees, two pointers	2300	x1634
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x9246
1698C	3SUM Closure brute force, data structures	1300	x18458
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20889
1698A	XOR Mixup bitmasks, brute force	800	x28916
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x559
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1185
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x4419
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14317
1697B	Promo greedy, sortings	900	x26458
1697A	Parkway Walk greedy, implementation	800	x25705
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x161
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x272
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x869
1696E	Placing Jinas combinatorics, math	2000	x4022
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x5434
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11581
1696B	NIT Destroys the Universe greedy	900	x21134
1696A	NIT orz! bitmasks, greedy	800	x18724
1695E	Ambiguous Dominoes constructive algorithms, dfs and similar, graphs	2700	x448
1695D2	Tree Queries (Hard Version) constructive algorithms, dfs and similar, dp, greedy, trees	2300	x1989
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2165
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x10886
1695B	Circle Game games, greedy	1000	x18402
1695A	Subrectangle Guess games	800	x16320
1694B	Paranoid String constructive algorithms, greedy	1200	x19075
1694A	Creep greedy, implementation	800	x22619
1693F	I Might Be Wrong binary search, greedy, two pointers	3400	x401
1693E	Outermost Maximums data structures, greedy	3400	x422
1693D	Decinc Dividing brute force, data structures, divide and conquer, dp, greedy	2800	x828
1693C	Keshi in Search of AmShZ graphs, greedy, shortest paths	2300	x2567
1693B	Fake Plastic Trees dfs and similar, dp, greedy, trees	1700	x8422
1693A	Directional Increase greedy	1300	x16088
1692H	Gambling data structures, dp, greedy, math	1700	x7427
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x17561
1692F	3SUM brute force, math	1300	x22617
1692E	Binary Deque binary search, implementation, two pointers	1200	x21758
1692D	The Clock brute force, implementation	1100	x19343
1692C	Where's the Bishop? implementation	800	x33964
1692B	All Distinct greedy, sortings	800	x34017
1692A	Marathon implementation	800	x64491
1691F	K-Set Tree combinatorics, dfs and similar, dp, math, trees	2500	x964
1691E	Number of Groups data structures, dfs and similar, dsu, graphs, greedy, sortings	2300	x1825
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x5768
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x15604
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x22923
1691A	Beat The Odds brute force, greedy, math	800	x30466
1690G	Count the Trains binary search, data structures, greedy, sortings	2000	x3381
1690F	Shifting String graphs, math, number theory, strings	1700	x7133
1690E	Price Maximization binary search, greedy, math, two pointers	1500	x15138
1690D	Black and White Stripe implementation, two pointers	1000	x29330
1690C	Restoring the Duration of Tasks data structures, greedy, implementation	800	x26075
1690B	Array Decrements greedy, implementation	800	x25278
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x33401
1689E	ANDfinity bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2500	x1203
1689D	Lena and Matrix data structures, dp, geometry, shortest paths	1900	x4194
1689C	Infected Tree dfs and similar, dp, trees	1600	x11162
1689B	Mystic Permutation data structures, greedy	900	x17506
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16758
1688C	Manipulating History constructive algorithms, greedy, strings	1700	x8125
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x18241
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x21576
1687F	Koishi's Unconscious Permutation fft, math	3500	x84
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x224
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x584
1687C	Sanae and Giant Robot binary search, brute force, data structures, dsu, greedy, sortings	2500	x1402
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3617
1687A	The Enchanted Forest brute force, greedy	1600	x10342
1686B	Odd Subarrays dp, greedy	800	x18238
1686A	Everything Everywhere All But One greedy	800	x20470
1685E	The Ultimate LIS Problem data structures, greedy	3500	x150
1685D2	Permutation Weight (Hard Version) constructive algorithms, greedy	3500	x107
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x444
1685C	Bring Balance brute force, constructive algorithms, greedy	2600	x1003
1685B	Linguistics greedy, implementation, sortings, strings	2000	x3260
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x17054
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x239
1684G	Euclid Guess constructive algorithms, flows, graph matchings, math, number theory	2800	x610
1684F	Diverse Segments data structures, two pointers	2600	x896
1684E	MEX vs DIFF binary search, brute force, constructive algorithms, data structures, greedy, two pointers	2100	x3149
1684D	Traps constructive algorithms, greedy, sortings	1700	x9636
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12289
1684B	Z mod X = C constructive algorithms, math	800	x20931