Problemset - Codeforces

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Problems

#	Name
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x524
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x598
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x589
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x308
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x608
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x547
1693D	Decinc Dividing brute force, data structures, divide and conquer, dp, greedy	2800	x800
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x567
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x436
1684G	Euclid Guess constructive algorithms, flows, graph matchings, math, number theory	2800	x601
1677E	Tokitsukaze and Beautiful Subsegments data structures	2900	x524
1672I	PermutationForces data structures, greedy	3000	x172
1672F2	Checker for Array Shuffling constructive algorithms, dfs and similar, graphs	2800	x789
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x635
1667D	Edge Elimination constructive algorithms, dfs and similar, dp, trees	2900	x650
1659F	Tree and Permutation Game dfs and similar, games, graphs, trees	3000	x189
1654G	Snowy Mountain data structures, dfs and similar, graphs, greedy, shortest paths, trees	2900	x365
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x1091
1651F	Tower Defense binary search, brute force, data structures	3000	x372
1648D	Serious Business data structures, divide and conquer, dp, implementation, shortest paths	2800	x825
1646F	Playing Around the Table constructive algorithms, greedy, implementation	2900	x514
1644F	Basis combinatorics, fft, math, number theory	2900	x320
1637G	Birthday constructive algorithms, greedy, math	3000	x498
1635F	Closest Pair data structures, greedy	2800	x996
1633F	Perfect Matching data structures, divide and conquer, interactive, trees	2800	x315
1630E	Expected Components combinatorics, math, number theory, probabilities	2900	x433
1626F	A Random Code Problem combinatorics, dp, math, number theory, probabilities	2800	x723
1625E2	Cats on the Upgrade (hard version) binary search, data structures, dfs and similar, graphs, trees	2800	x586
1622F	Quadratic Set constructive algorithms, hashing, math, number theory	2900	x610
1620F	Bipartite Array dp, greedy	2800	x596
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x841
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x588
1615H	Reindeer Games binary search, constructive algorithms, data structures, divide and conquer, flows, graphs, shortest paths	3000	x322
1615F	LEGOndary Grandmaster combinatorics, dp, math	2800	x850
1612F	Armor and Weapons brute force, dp, greedy, shortest paths	2800	x587
1610F	Mashtali: a Space Oddysey constructive algorithms, dfs and similar, graphs	3000	x515
1609G	A Stroll Around the Matrix data structures, greedy, math	3000	x372
1609F	Interesting Sections data structures, divide and conquer, meet-in-the-middle, two pointers	2800	x745
1608E	The Cells on the Paper binary search, implementation, sortings	2800	x431
1606F	Tree Queries brute force, dp, trees	2800	x540
1605F	PalindORme combinatorics, dp	2900	x296
1603D	Artistic Partition divide and conquer, dp, number theory	3000	x649
1601E	Phys Ed Online data structures, dp, greedy	2900	x470
1592F2	Alice and Recoloring 2 constructive algorithms, flows, graph matchings, greedy	2800	x699
1583G	Omkar and Time Travel data structures, math	3000	x433
1580D	Subsequence brute force, divide and conquer, dp, greedy, trees	2900	x837
1578K	Kingdom of Islands brute force, graphs, implementation	2800	x348
1578F	Framing Pictures geometry	2900	x148
1578B	Building Forest Trails data structures, dsu	2800	x329
1578A	Anti-Tetris constructive algorithms, graphs, shortest paths	2800	x337
1575F	Finding Expected Value math	2900	x112
1575C	Cyclic Sum data structures, fft, number theory	3000	x159
1572E	Polygon binary search, dp, geometry	3000	x283
1572D	Bridge Club flows, graph matchings, graphs, greedy	2800	x488
1571J	Two Railroads *special problem	3000	x40
1571H	Laser Beams *special problem, geometry, probabilities	2900	x48
1569F	Palindromic Hamiltonian Path brute force, dfs and similar, dp, graphs, hashing	3000	x234
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x388
1558E	Down Below binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths	3000	x461
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x707
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x680
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x520
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x473
1545C	AquaMoon and Permutations 2-sat, brute force, combinatorics, constructive algorithms, graph matchings, graphs	2800	x597
1540C2	Converging Array (Hard Version) dp, math	2900	x446
1535F	String Distance binary search, brute force, data structures, hashing, implementation, strings	3000	x446
1534F2	Falling Sand (Hard Version) dfs and similar, dp, graphs, greedy	3000	x529
1528E	Mashtali and Hagh Trees combinatorics, dp, trees	2900	x517
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x253
1525F	Goblins And Gnomes brute force, dp, flows, graph matchings	2800	x326
1510F	Fiber Shape	2800	x58
1510C	Cactus Not Enough dfs and similar, graph matchings, graphs	2900	x211
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x546
1500D	Tiles for Bathroom data structures, sortings, two pointers	2900	x450
1494F	Delete The Edges brute force, constructive algorithms, dfs and similar, graphs, implementation	2900	x335
1491G	Switch and Flip constructive algorithms, graphs, math	2800	x755
1488H	Build From Suffixes *special problem, combinatorics, data structures	2800	x58
1487F	Ones dp, greedy, shortest paths	2900	x365
1479D	Odd Mineral Resource binary search, bitmasks, brute force, data structures, probabilities, trees	2900	x998
1477D	Nezzar and Hidden Permutations constructive algorithms, dfs and similar, graphs	2800	x539
1476F	Lanterns binary search, data structures, dp	3000	x665
1474F	1 2 3 4 ... dp, math, matrices	3000	x243
1473G	Tiles combinatorics, dp, fft, math	2800	x385
1468B	Bakery data structures, dsu	2900	x209
1455G	Forbidden Value data structures, dp	2900	x400
1455F	String and Operations dp, greedy	2800	x437
1452F	Divide Powers constructive algorithms, greedy	2900	x309
1450H1	Multithreading (Easy Version) combinatorics, fft, math	2900	x426
1446D2	Frequency Problem (Hard Version) data structures, greedy, two pointers	3000	x1273
1444D	Rectangular Polyline constructive algorithms, dp, geometry	2900	x563
1442E	Black, White and Grey Tree binary search, constructive algorithms, dfs and similar, dp, greedy, trees	3000	x568
1442D	Sum data structures, divide and conquer, dp, greedy	2800	x2113
1438F	Olha and Igor interactive, probabilities, trees	3000	x625
1436F	Sum Over Subsets combinatorics, math, number theory	2800	x515
1431I	Cyclic Shifts *special problem, strings	2900	x45
1428G2	Lucky Numbers (Hard Version) dp, greedy	3000	x620
1428G1	Lucky Numbers (Easy Version) dp, greedy	2900	x556
1425I	Impressive Harvesting of The Orchard data structures	2800	x233
1423M	Milutin's Plums interactive	2800	x151
1423I	Lookup Tables bitmasks	3000	x105