Problemset - Codeforces

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Educational Codeforces Round 167 (Rated for Div. 2)
38:49:48
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Problems

#	Name
1986G2	Permutation Problem (Hard Version) brute force, data structures, hashing, math, number theory		x429
1986G1	Permutation Problem (Simple Version) binary search, brute force, combinatorics, data structures, math, number theory		x722
1986F	Non-academic Problem dfs and similar, graphs		x2561
1986E	Beautiful Array greedy, math, sortings		x5741
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers		x10589
1986C	Update Queries data structures, greedy, sortings		x17913
1986B	Matrix Stabilization brute force, data structures, greedy, sortings		x20668
1986A	X Axis brute force, geometry, math, sortings		x30297
1985H2	Maximize the Largest Component (Hard Version) data structures, dfs and similar, dp, dsu, implementation	2200	x1031
1985H1	Maximize the Largest Component (Easy Version) brute force, data structures, dfs and similar, dsu, graphs, implementation	1700	x3907
1985G	D-Function combinatorics, math, number theory	1600	x6624
1985F	Final Boss binary search, data structures	1500	x11055
1985E	Secret Box brute force, combinatorics, math	1200	x15683
1985D	Manhattan Circle implementation, math	900	x27833
1985C	Good Prefixes greedy	1000	x25066
1985B	Maximum Multiple Sum brute force, math, number theory	800	x36357
1985A	Creating Words implementation, strings	800	x40325
1984H	Tower Capturing combinatorics, dp, geometry	3300	x116
1984G	Magic Trick II constructive algorithms, implementation, sortings	3200	x148
1984F	Reconstruction brute force, dp, math	2500	x688
1984E	Shuffle dp, greedy, trees	2400	x1055
1984D	''a'' String Problem brute force, hashing, implementation, math, string suffix structures, strings	2000	x2572
1984C2	Magnitude (Hard Version) combinatorics, dp, greedy, math	1700	x5863
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x12929
1984B	Large Addition implementation, math	1100	x14980
1984A	Strange Splitting constructive algorithms	800	x17973
1982F	Sorting Problem Again binary search, data structures		x230
1982E	Number of k-good subarrays bitmasks, combinatorics, divide and conquer, divide and conquer, dp, math, meet-in-the-middle		x484
1982D	Beauty of the mountains brute force, data structures, dp, implementation, math, number theory		x3055
1982C	Boring Day binary search, data structures, dp, greedy, two pointers		x9910
1982B	Collatz Conjecture brute force, implementation, math, number theory		x10040
1982A	Soccer greedy, implementation, math, sortings		x17308
1981F	Turtle and Paths on a Tree data structures, dp, trees	3000	x181
1981E	Turtle and Intersected Segments data structures, dsu, graphs, greedy	2600	x586
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory	2400	x1180
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x4087
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x11278
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math	800	x19270
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x890
1980F2	Field Division (hard version) math, sortings	2400	x740
1980F1	Field Division (easy version) data structures, math, sortings	1900	x3001
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x8434
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x11761
1980C	Sofia and the Lost Operations constructive algorithms, greedy	1300	x15799
1980B	Choosing Cubes sortings, sortings	800	x30562
1980A	Problem Generator math	800	x35421
1979F	Kostyanych's Theorem brute force, constructive algorithms, graphs, interactive	2900	x208
1979E	Manhattan Triangle binary search, constructive algorithms, data structures, geometry, implementation, two pointers	2400	x1055
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x5289
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x15765
1979B	XOR Sequences bitmasks, greedy	1000	x19537
1979A	Guess the Maximum brute force, greedy, implementation	800	x25604
1978F	Large Graph data structures, dfs and similar, dsu, graphs, number theory, two pointers	2400	x861
1978E	Computing Machine brute force, data structures, dp, greedy, implementation	2000	x2619
1978D	Elections data structures, greedy, implementation, math	1600	x8162
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x11335
1978B	New Bakery binary search, greedy, math, ternary search	800	x18115
1978A	Alice and Books constructive algorithms, greedy, sortings	800	x20604
1977E	Tensor constructive algorithms, graphs, interactive	2600	x512
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1453
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x5590
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x15550
1977A	Little Nikita math	800	x27002
1976F	Remove Bridges data structures, dfs and similar, dp, greedy, sortings, trees	2800	x401
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees	2500	x765
1976D	Invertible Bracket Sequences binary search, combinatorics, data structures, divide and conquer, implementation, two pointers	2000	x3328
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x8493
1976B	Increase/Decrease/Copy greedy, implementation	1100	x19182
1976A	Verify Password implementation, sortings, strings	800	x24747
1975I	Mind Bloom dp	3500	x48
1975H	378QAQ and Core greedy, strings	3500	x69
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x186
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x648
1975E	Chain Queries binary search, data structures, dfs and similar, implementation, trees	2100	x1835
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x4874
1975C	Chamo and Mocha's Array binary search, brute force, greedy	1200	x12306
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x15178
1975A	Bazoka and Mocha's Array brute force, greedy, implementation, sortings	800	x16770
1974G	Money Buys Less Happiness Now data structures, greedy, sortings	2000	x3546
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x3021
1974E	Money Buys Happiness dp	1800	x6562
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x12699
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x13647
1974B	Symmetric Encoding implementation, sortings, strings	800	x27605
1974A	Phone Desktop greedy, math	800	x30125
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x172
1973E	Cat, Fox and Swaps graphs, math, sortings	2500	x670
1973D	Cat, Fox and Maximum Array Split brute force, interactive, math	2400	x1659
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x7164
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x12244
1973A	Chess For Three brute force, dp, implementation, math	900	x21501
1972B	Coin Games games	900	x18905
1972A	Contest Proposal brute force, greedy, two pointers	800	x20778
1971H	±1 2-sat, dfs and similar, graphs	2100	x1409
1971G	XOUR data structures, dsu, sortings	1700	x7905
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x8439
1971E	Find the Car binary search, math, sortings	1500	x11975
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x22701
1971C	Clock and Strings implementation	900	x28417
1971B	Different String implementation, strings	800	x32211

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