Problemset - Codeforces

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Problems

#	Name
1572F	Stations data structures	3400	x253
1572E	Polygon binary search, dp, geometry	3000	x283
1572D	Bridge Club flows, graph matchings, graphs, greedy	2800	x488
1572C	Paint dp, greedy	2700	x1418
1572B	Xor of 3 brute force, constructive algorithms, greedy, two pointers	2500	x1779
1571J	Two Railroads *special problem	3000	x40
1571I	Physical Examination *special problem, binary search, data structures	3200	x58
1571H	Laser Beams *special problem, geometry, probabilities	2900	x48
1571G	A Battle Against a Dragon *special problem, data structures, dp	2500	x75
1571F	Kotlinforces *special problem, constructive algorithms, dp	2000	x181
1569F	Palindromic Hamiltonian Path brute force, dfs and similar, dp, graphs, hashing	3000	x234
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x792
1567F	One-Four Overload 2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation	2700	x736
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3577
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4458
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x129
1566G	Four Vertices constructive algorithms, data structures, graphs, greedy, implementation, shortest paths	3100	x339
1566F	Points Movement data structures, dp, greedy, implementation, sortings	2600	x942
1566E	Buds Re-hanging constructive algorithms, dfs and similar, dp, greedy, trees	2000	x4072
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x388
1562E	Rescue Niwen! dp, greedy, string suffix structures, strings	2500	x1380
1562D2	Two Hundred Twenty One (hard version) data structures, math	2200	x2096
1560F2	Nearest Beautiful Number (hard version) bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy	2100	x4278
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2262
1559D2	Mocha and Diana (Hard Version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, trees, two pointers	2500	x2590
1558F	Strange Sort data structures, sortings	3300	x373
1558E	Down Below binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths	3000	x461
1558D	Top-Notch Insertions combinatorics, data structures	2600	x943
1558C	Bottom-Tier Reversals constructive algorithms, greedy	2000	x3211
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x707
1557D	Ezzat and Grid data structures, dp, greedy	2200	x2508
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x362
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x315
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1197
1556E	Equilibrium data structures, dp, greedy	2200	x2660
1555F	Good Graph data structures, dsu, graphs, trees	2700	x836
1555E	Boring Segments data structures, sortings, trees, two pointers	2100	x3961
1554E	You dfs and similar, dp, math, number theory	2600	x1201
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x199
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x680
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x993
1553F	Pairwise Modulo data structures, math	2300	x2187
1553E	Permutation Shift brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math	2100	x3279
1552I	Organizing a Music Festival dfs and similar, math	3400	x124
1552H	Guess the Perimeter binary search, interactive, number theory	3300	x385
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x521
1552F	Telepanting binary search, data structures, dp, sortings	2200	x2850
1552E	Colors and Intervals constructive algorithms, data structures, greedy, sortings	2300	x1811
1551F	Equidistant Vertices brute force, combinatorics, dfs and similar, dp, trees	2200	x1799
1551E	Fixed Points binary search, brute force, dp	2000	x3804
1551D2	Domino (hard version) constructive algorithms, implementation, math	2100	x2707
1550F	Jumping Around binary search, data structures, divide and conquer, dp, dsu, graphs, shortest paths	2700	x651
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1485
1550D	Excellent Arrays binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers	2300	x1820
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x396
1548D2	Gregor and the Odd Cows (Hard) brute force, geometry, math, number theory	3300	x240
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1440
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x1789
1547G	How Many Paths? dfs and similar, dp, graphs, trees	2100	x2941
1545F	AquaMoon and Potatoes brute force, data structures, dp	3500	x106
1545E2	AquaMoon and Time Stop (hard version) data structures, dp	3500	x81
1545E1	AquaMoon and Time Stop (easy version) data structures, dp	3500	x77
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
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x397
1543D2	RPD and Rap Sheet (Hard Version) brute force, constructive algorithms, interactive, math	2200	x1965
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x829
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1213
1542D	Priority Queue combinatorics, dp, implementation, math, ternary search	2200	x2579
1540E	Tasty Dishes math, matrices	3500	x102
1540D	Inverse Inversions binary search, brute force, data structures	3200	x269
1540C2	Converging Array (Hard Version) dp, math	2900	x446
1540C1	Converging Array (Easy Version) dp, math	2700	x606
1540B	Tree Array brute force, combinatorics, dp, graphs, math, probabilities, trees	2300	x2531
1539F	Strange Array data structures, greedy, sortings	2600	x849
1539E	Game with Cards binary search, constructive algorithms, data structures, dp, greedy, implementation	2500	x935
1538G	Gift Set binary search, greedy, math, ternary search	2100	x4459
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x2851
1537F	Figure Fixing constructive algorithms, dfs and similar, dsu, graphs, greedy, math	2200	x2418
1537E2	Erase and Extend (Hard Version) binary search, data structures, greedy, hashing, string suffix structures, strings, two pointers	2200	x5105
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x926
1536E	Omkar and Forest combinatorics, graphs, math, shortest paths	2300	x2371
1536D	Omkar and Medians data structures, greedy, implementation	2000	x4622
1535F	String Distance binary search, brute force, data structures, hashing, implementation, strings	3000	x446
1535E	Gold Transfer binary search, data structures, dp, greedy, interactive, trees	2200	x2678
1534H	Lost Nodes constructive algorithms, dp, graphs, interactive, sortings, trees	3500	x147
1534G	A New Beginning data structures, dp, geometry, sortings	3300	x547
1534F2	Falling Sand (Hard Version) dfs and similar, dp, graphs, greedy	3000	x529
1534F1	Falling Sand (Easy Version) dfs and similar, graphs, greedy	2500	x1211
1534E	Lost Array graphs, greedy, interactive, shortest paths	2300	x1885
1530H	Turing's Award data structures, dp	3400	x151
1530G	What a Reversal constructive algorithms	3300	x143
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x765
1530E	Minimax constructive algorithms, greedy, strings	2100	x2935
1528F	AmShZ Farm combinatorics, fft, math	3300	x281
1528E	Mashtali and Hagh Trees combinatorics, dp, trees	2900	x517
1528D	It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms, graphs, shortest paths	2500	x1415
1528C	Trees of Tranquillity data structures, dfs and similar, greedy, trees	2300	x2598
1527E	Partition Game binary search, data structures, divide and conquer, dp	2500	x2242
1527D	MEX Tree combinatorics, dfs and similar, implementation, math, trees	2400	x1869