Problemset - Codeforces

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Problems

#	Name
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x1019
1716F	Bags with Balls combinatorics, dp, math, number theory	2500	x1000
835F	Roads in the Kingdom dfs and similar, dp, graphs, trees	2500	x997
1354F	Summoning Minions constructive algorithms, dp, flows, graph matchings, greedy, sortings	2500	x977
1332F	Independent Set dfs and similar, dp, trees	2500	x976
1625E1	Cats on the Upgrade (easy version) brute force, data structures, dfs and similar, divide and conquer, dp, graphs, trees	2500	x974
729F	Financiers Game dp	2500	x934
1539E	Game with Cards binary search, constructive algorithms, data structures, dp, greedy, implementation	2500	x924
1280D	Miss Punyverse dp, greedy, trees	2500	x920
1661E	Narrow Components brute force, data structures, dp, dsu, math, trees	2500	x910
1691F	K-Set Tree combinatorics, dfs and similar, dp, math, trees	2500	x905
53E	Dead Ends bitmasks, dp	2500	x900
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x894
1737E	Ela Goes Hiking combinatorics, dp, math, probabilities	2500	x891
1096E	The Top Scorer combinatorics, dp, math, probabilities	2500	x860
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x849
1420E	Battle Lemmings dp, greedy	2500	x847
1806D	DSU Master combinatorics, dp, dsu, math	2500	x846
1187F	Expected Square Beauty dp, math, probabilities	2500	x844
735E	Ostap and Tree dp, trees	2500	x843
1111E	Tree data structures, dfs and similar, dp, graphs, trees	2500	x840
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x832
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x826
17C	Balance dp	2500	x813
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x811
1734F	Zeros and Ones bitmasks, divide and conquer, dp, math	2500	x769
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x764
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x760
888F	Connecting Vertices dp, graphs	2500	x747
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x740
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x733
1055E	Segments on the Line binary search, dp	2500	x707
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x705
1796E	Colored Subgraphs dfs and similar, dp, games, greedy, trees	2500	x691
437E	The Child and Polygon dp, geometry	2500	x690
123E	Maze dfs and similar, dp, probabilities, trees	2500	x689
86C	Genetic engineering dp, string suffix structures, trees	2500	x680
1731F	Function Sum brute force, combinatorics, dp, fft, math	2500	x658
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x657
946G	Almost Increasing Array data structures, dp	2500	x648
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x646
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2500	x635
1076F	Summer Practice Report dp, greedy	2500	x619
993D	Compute Power binary search, dp, greedy	2500	x592
23E	Tree dp	2500	x588
954H	Path Counting combinatorics, dp	2500	x553
425E	Sereja and Sets dp	2500	x545
351C	Jeff and Brackets dp, matrices	2500	x539
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x532
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2500	x520
1117F	Crisp String bitmasks, dp	2500	x517
1310B	Double Elimination dp, implementation	2500	x488
958C3	Encryption (hard) data structures, dp	2500	x485
101E	Candies and Stones divide and conquer, dp	2500	x477
433E	Tachibana Kanade's Tofu dp	2500	x471
138D	World of Darkraft dp, games	2500	x469
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x467
1056F	Write The Contest binary search, dp, math	2500	x465
161E	Polycarpus the Safecracker brute force, dp	2500	x462
331C3	The Great Julya Calendar dp	2500	x461
152E	Garden bitmasks, dp, graphs, trees	2500	x459
68D	Half-decay tree data structures, divide and conquer, dp, math, probabilities	2500	x446
1725E	Electrical Efficiency combinatorics, data structures, dp, math, number theory, trees	2500	x432
845F	Guards In The Storehouse bitmasks, dp	2500	x420
95D	Horse Races dp, math	2500	x414
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x409
1866K	Keen Tree Calculation binary search, data structures, dp, geometry, graphs, implementation, trees	2500	x406
264D	Colorful Stones dp, two pointers	2500	x406
263E	Rhombus brute force, data structures, dp	2500	x394
596E	Wilbur and Strings dfs and similar, dp, graphs, strings	2500	x388
1725J	Journey dp, trees	2500	x356
883D	Packmen Strike Back binary search, dp, math	2500	x349
166D	Shoe Store dp, graph matchings, greedy, sortings, two pointers	2500	x346
93D	Flags dp, math, matrices	2500	x334
57D	Journey dp, math	2500	x329
176D	Hyper String dp	2500	x300
370E	Summer Reading dp, greedy	2500	x230
1585G	Poachers dp, games, graphs, trees	2500	x169
185C	Clever Fat Rat dp	2500	x130
424E	Colored Jenga dfs and similar, dp, probabilities	2500	x122
1571G	A Battle Against a Dragon *special problem, data structures, dp	2500	x71
321E	Ciel and Gondolas data structures, divide and conquer, dp	2600	x4492
631E	Product Sum data structures, dp, geometry	2600	x2221
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2102
1223F	Stack Exterminable Arrays data structures, divide and conquer, dp, hashing	2600	x1947
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1940
6D	Lizards and Basements 2 brute force, dp	2600	x1811
1278F	Cards combinatorics, dp, math, number theory, probabilities	2600	x1729
1344C	Quantifier Question dfs and similar, dp, graphs, math	2600	x1639
1523E	Crypto Lights combinatorics, dp, math, probabilities	2600	x1528
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1465
1363F	Rotating Substrings dp, strings	2600	x1277
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1270
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1210
650D	Zip-line binary search, data structures, dp, hashing	2600	x1191
1554E	You dfs and similar, dp, math, number theory	2600	x1179
1264D1	Beautiful Bracket Sequence (easy version) combinatorics, dp, probabilities	2600	x1171
1437F	Emotional Fishermen combinatorics, dp, math, two pointers	2600	x1163
1827C	Palindrome Partition binary search, brute force, data structures, dp, hashing, strings	2600	x1139
797F	Mice and Holes data structures, dp, greedy, sortings	2600	x1084