Problemset - Codeforces

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IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)
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Problems

#	Name
2057D	Gifts Order data structures, greedy, implementation, math, matrices	2000	x3884
2042F	Two Subarrays data structures, dp, implementation, matrices	2600	x601
2036D	I Love 1543 brute force, implementation, matrices	1300	x12963
2023F	Hills and Pits data structures, greedy, math, matrices	3500	x67
2018D	Max Plus Min Plus Size data structures, dp, dsu, greedy, implementation, matrices, sortings	2200	x1718
2004G	Substring Compression data structures, dp, matrices	3200	x333
1995E2	Let Me Teach You a Lesson (Hard Version) data structures, dp, matrices, two pointers	2900	x319
1995E1	Let Me Teach You a Lesson (Easy Version) 2-sat, data structures, dp, matrices, two pointers	2700	x404
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x10935
1970E3	Trails (Hard) dp, matrices	2200	x823
1970E2	Trails (Medium) dp, matrices	2000	x1438
1924C	Fractal Origami geometry, math, matrices	2400	x1191
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x890
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x551
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x630
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x796
1864H	Asterism Stream dp, math, matrices	3200	x301
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x861
1814E	Chain Chips data structures, dp, matrices	2300	x1414
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x711
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1908
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1564
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1754
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x963
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x20093
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x326
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x809
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x334
1662C	European Trip dp, graphs, math, matrices		x346
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x13561
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6400
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x608
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x2176
1599E	Two Arrays data structures, matrices	3200	x69
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8772
1540E	Tasty Dishes math, matrices	3500	x109
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x2952
1513C	Add One dp, matrices	1600	x14566
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x453
1474F	1 2 3 4 ... dp, math, matrices	3000	x255
1458C	Latin Square math, matrices	2700	x1392
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1463
1411G	No Game No Life bitmasks, games, math, matrices	2700	x682
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x207
1380F	Strange Addition data structures, dp, matrices	2600	x819
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x265
1344F	Piet's Palette matrices	3200	x457
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x2213
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x3900
1286D	LCC data structures, math, matrices, probabilities	3100	x633
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x104
1252K	Addition Robot data structures, math, matrices	2100	x1882
1197F	Coloring Game dp, games, matrices	2700	x268
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4636
1184D2	Parallel Universes (Hard) math, matrices	3100	x109
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2892
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x681
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x581
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x1257
1117D	Magic Gems dp, math, matrices	2100	x4427
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x1002
1101G	(Zero XOR Subset)-less math, matrices	2300	x1765
1025E	Colored Cubes constructive algorithms, implementation, matrices	2700	x573
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x2062
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x4074
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2700	x253
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x2185
954F	Runner's Problem dp, matrices, sortings	2100	x1239
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x581
923E	Perpetual Subtraction fft, math, matrices	3100	x463
917D	Stranger Trees dp, math, matrices, trees	2600	x1225
917C	Pollywog combinatorics, dp, matrices	2900	x406
891E	Lust combinatorics, math, matrices	3000	x955
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x141
852B	Neural Network country dp, matrices	2000	x1497
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x992
832E	Vasya and Shifts matrices	2600	x335
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1519
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1058
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1639
736D	Permutations math, matrices	2800	x466
718C	Sasha and Array data structures, math, matrices	2300	x3966
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1452
696D	Legen... data structures, dp, matrices, strings	2500	x1344
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2106
691E	Xor-sequences matrices	1900	x2599
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x497
632F	Magic Matrix brute force, divide and conquer, graphs, matrices, trees	2400	x1112
621E	Wet Shark and Blocks dp, matrices	2000	x2893
618G	Combining Slimes dp, math, matrices, probabilities	3300	x246
593E	Strange Calculation and Cats dp, matrices	2400	x650
582B	Once Again... constructive algorithms, dp, matrices	1900	x3461
578F	Mirror Box matrices, trees	3200	x554
576D	Flights for Regular Customers dp, matrices	2700	x1435
575A	Fibonotci data structures, math, matrices	2700	x812
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1990
514E	Darth Vader and Tree dp, matrices	2200	x1461
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x769
498E	Stairs and Lines dp, matrices	2700	x481
497E	Subsequences Return dp, matrices	2900	x288

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