Problemset - Codeforces

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Codeforces Round 998 (Div. 3)
09:18:10
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Problems

#	Name
1986B	Matrix Stabilization brute force, data structures, greedy, sortings	1000	x27266
1986A	X Axis brute force, geometry, math, sortings	800	x42096
1985H2	Maximize the Largest Component (Hard Version) data structures, dfs and similar, dp, dsu, implementation	2200	x1586
1985H1	Maximize the Largest Component (Easy Version) brute force, data structures, dfs and similar, dsu, graphs, implementation	1700	x5862
1985G	D-Function combinatorics, math, number theory	1600	x9856
1985F	Final Boss binary search, data structures	1500	x16114
1985E	Secret Box brute force, combinatorics, math	1200	x20654
1985D	Manhattan Circle implementation, math	900	x35990
1985C	Good Prefixes greedy	1000	x33849
1985B	Maximum Multiple Sum brute force, math, number theory	800	x48241
1985A	Creating Words implementation, strings	800	x57101
1984H	Tower Capturing combinatorics, dp, geometry	3300	x173
1984G	Magic Trick II constructive algorithms, implementation, sortings	3200	x265
1984F	Reconstruction brute force, dp, math	2500	x971
1984E	Shuffle dp, greedy, trees	2400	x1474
1984D	''a'' String Problem brute force, hashing, implementation, math, string suffix structures, strings	2000	x3385
1984C2	Magnitude (Hard Version) combinatorics, dp, greedy, math	1700	x7657
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x17315
1984B	Large Addition implementation, math	1100	x18882
1984A	Strange Splitting constructive algorithms	800	x21590
1983G	Your Loss bitmasks, brute force, dp, trees	3000	x218
1983F	array-value binary search, bitmasks, data structures, greedy, two pointers	2500	x1260
1983E	I Love Balls combinatorics, math, probabilities	2300	x2088
1983D	Swap Dilemma constructive algorithms, data structures, divide and conquer, greedy, math, sortings	1700	x8546
1983C	Have Your Cake and Eat It Too binary search, brute force, greedy, implementation	1400	x12950
1983B	Corner Twist constructive algorithms, greedy, implementation, math	1200	x16605
1983A	Array Divisibility constructive algorithms, math	800	x26328
1982F	Sorting Problem Again binary search, data structures, sortings	2600	x988
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1649
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x7433
1982C	Boring Day binary search, data structures, dp, greedy, two pointers	1200	x18432
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x17466
1982A	Soccer greedy, implementation, math, sortings	800	x25686
1981F	Turtle and Paths on a Tree data structures, dp, trees	3000	x290
1981E	Turtle and Intersected Segments data structures, dsu, graphs, greedy	2600	x948
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory	2400	x1742
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5522
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x14226
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math	800	x22775
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x1310
1980F2	Field Division (hard version) math, sortings	2400	x1046
1980F1	Field Division (easy version) data structures, math, sortings	1900	x3870
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x10927
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x14851
1980C	Sofia and the Lost Operations constructive algorithms, greedy	1300	x19149
1980B	Choosing Cubes sortings, sortings	800	x35448
1980A	Problem Generator math	800	x41990
1979F	Kostyanych's Theorem brute force, constructive algorithms, graphs, interactive	2900	x332
1979E	Manhattan Triangle binary search, constructive algorithms, data structures, geometry, implementation, two pointers	2400	x1508
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6837
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x19405
1979B	XOR Sequences bitmasks, greedy	1000	x23320
1979A	Guess the Maximum brute force, greedy, implementation	800	x29557
1978F	Large Graph data structures, dfs and similar, dsu, graphs, number theory, two pointers	2400	x1384
1978E	Computing Machine brute force, data structures, dp, greedy, implementation	2000	x3959
1978D	Elections data structures, greedy, implementation, math	1600	x11715
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x15493
1978B	New Bakery binary search, greedy, math, ternary search	800	x22940
1978A	Alice and Books constructive algorithms, greedy, sortings	800	x26291
1977E	Tensor constructive algorithms, graphs, interactive	2600	x720
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1956
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6955
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x18098
1977A	Little Nikita math	800	x34394
1976F	Remove Bridges data structures, dfs and similar, dp, greedy, sortings, trees	2800	x631
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees	2500	x1094
1976D	Invertible Bracket Sequences binary search, combinatorics, data structures, divide and conquer, implementation, two pointers	2000	x4779
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x10747
1976B	Increase/Decrease/Copy greedy, implementation	1100	x22808
1976A	Verify Password implementation, sortings, strings	800	x29404
1975I	Mind Bloom dp	3500	x110
1975H	378QAQ and Core greedy, strings	3500	x129
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x246
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x869
1975E	Chain Queries binary search, data structures, dfs and similar, implementation, trees	2100	x2405
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x6274
1975C	Chamo and Mocha's Array binary search, brute force, greedy	1200	x15105
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x18517
1975A	Bazoka and Mocha's Array brute force, greedy, implementation, sortings	800	x19155
1974G	Money Buys Less Happiness Now data structures, greedy, sortings	2000	x4524
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x3689
1974E	Money Buys Happiness dp	1800	x8378
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x15339
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x16311
1974B	Symmetric Encoding implementation, sortings, strings	800	x31121
1974A	Phone Desktop greedy, math	800	x34028
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x245
1973E	Cat, Fox and Swaps graphs, math, sortings	2500	x838
1973D	Cat, Fox and Maximum Array Split brute force, interactive, math	2400	x1978
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x8638
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x14555
1973A	Chess For Three brute force, dp, implementation, math	900	x25389
1972B	Coin Games games	900	x22501
1972A	Contest Proposal brute force, greedy, two pointers	800	x23589
1971H	±1 2-sat, dfs and similar, graphs	2100	x1947
1971G	XOUR data structures, dsu, sortings	1700	x9632
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x10509
1971E	Find the Car binary search, math, sortings	1500	x15016
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x26792
1971C	Clock and Strings implementation	900	x34698