Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1989F	Simultaneous Coloring dfs and similar, divide and conquer, graphs	3000	x158
1989E	Distance to Different combinatorics, dp, math	2300	x1093
1989D	Smithing Skill brute force, data structures, dp, greedy, math, sortings, two pointers	1900	x3794
1989C	Two Movies greedy	1400	x12228
1989B	Substring and Subsequence brute force, greedy, strings	1200	x14202
1989A	Catch the Coin implementation	800	x19734
1987H	Fumo Temple interactive	3500	x38
1987G2	Spinning Round (Hard Version) divide and conquer, dp, trees	3500	x47
1987G1	Spinning Round (Easy Version) divide and conquer, dp, trees	2900	x138
1987F2	Interesting Problem (Hard Version) dp	2600	x566
1987F1	Interesting Problem (Easy Version) dp	2500	x668
1987E	Wonderful Tree! brute force, data structures, dfs and similar, dp, dsu, greedy, trees	2000	x2025
1987D	World is Mine dp, games	1800	x4523
1987C	Basil's Garden dp, greedy	1200	x11878
1987B	K-Sort greedy	1000	x14336
1987A	Upload More RAM greedy, math	800	x18028
1986G2	Permutation Problem (Hard Version) brute force, data structures, hashing, math, number theory	2500	x667
1986G1	Permutation Problem (Simple Version) binary search, brute force, combinatorics, data structures, math, number theory	2200	x996
1986F	Non-academic Problem dfs and similar, graphs, trees	1900	x3046
1986E	Beautiful Array greedy, math, number theory, sortings	1700	x6313
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers	1400	x11542
1986C	Update Queries data structures, greedy, sortings	1100	x18674
1986B	Matrix Stabilization brute force, data structures, greedy, sortings	1000	x21688
1986A	X Axis brute force, geometry, math, sortings	800	x32390
1985H2	Maximize the Largest Component (Hard Version) data structures, dfs and similar, dp, dsu, implementation	2200	x1123
1985H1	Maximize the Largest Component (Easy Version) brute force, data structures, dfs and similar, dsu, graphs, implementation	1700	x4188
1985G	D-Function combinatorics, math, number theory	1600	x7088
1985F	Final Boss binary search, data structures	1500	x11778
1985E	Secret Box brute force, combinatorics, math	1200	x16445
1985D	Manhattan Circle implementation, math	900	x28929
1985C	Good Prefixes greedy	1000	x26275
1985B	Maximum Multiple Sum brute force, math, number theory	800	x37775
1985A	Creating Words implementation, strings	800	x42068
1984H	Tower Capturing combinatorics, dp, geometry	3300	x130
1984G	Magic Trick II constructive algorithms, implementation, sortings	3200	x182
1984F	Reconstruction brute force, dp, math	2500	x735
1984E	Shuffle dp, greedy, trees	2400	x1118
1984D	''a'' String Problem brute force, hashing, implementation, math, string suffix structures, strings	2000	x2669
1984C2	Magnitude (Hard Version) combinatorics, dp, greedy, math	1700	x6076
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x13492
1984B	Large Addition implementation, math	1100	x15580
1984A	Strange Splitting constructive algorithms	800	x18566
1982F	Sorting Problem Again binary search, data structures, sortings	2600	x654
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1089
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x5326
1982C	Boring Day binary search, data structures, dp, greedy, two pointers	1200	x13425
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x13552
1982A	Soccer greedy, implementation, math, sortings	800	x20894
1981F	Turtle and Paths on a Tree data structures, dp, trees	3000	x191
1981E	Turtle and Intersected Segments data structures, dsu, graphs, greedy	2600	x626
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory	2400	x1253
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x4247
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x11662
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math	800	x19772
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x940
1980F2	Field Division (hard version) math, sortings	2400	x790
1980F1	Field Division (easy version) data structures, math, sortings	1900	x3127
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x8692
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x12124
1980C	Sofia and the Lost Operations constructive algorithms, greedy	1300	x16143
1980B	Choosing Cubes sortings, sortings	800	x31083
1980A	Problem Generator math	800	x36014
1979F	Kostyanych's Theorem brute force, constructive algorithms, graphs, interactive	2900	x229
1979E	Manhattan Triangle binary search, constructive algorithms, data structures, geometry, implementation, two pointers	2400	x1121
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x5462
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x16205
1979B	XOR Sequences bitmasks, greedy	1000	x19983
1979A	Guess the Maximum brute force, greedy, implementation	800	x26141
1978F	Large Graph data structures, dfs and similar, dsu, graphs, number theory, two pointers	2400	x982
1978E	Computing Machine brute force, data structures, dp, greedy, implementation	2000	x2854
1978D	Elections data structures, greedy, implementation, math	1600	x8753
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x12012
1978B	New Bakery binary search, greedy, math, ternary search	800	x18970
1978A	Alice and Books constructive algorithms, greedy, sortings	800	x21671
1977E	Tensor constructive algorithms, graphs, interactive	2600	x533
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1522
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x5733
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x15837
1977A	Little Nikita math	800	x27547
1976F	Remove Bridges data structures, dfs and similar, dp, greedy, sortings, trees	2800	x419
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees	2500	x804
1976D	Invertible Bracket Sequences binary search, combinatorics, data structures, divide and conquer, implementation, two pointers	2000	x3440
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x8728
1976B	Increase/Decrease/Copy greedy, implementation	1100	x19662
1976A	Verify Password implementation, sortings, strings	800	x25317
1975I	Mind Bloom dp	3500	x58
1975H	378QAQ and Core greedy, strings	3500	x77
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x194
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x673
1975E	Chain Queries binary search, data structures, dfs and similar, implementation, trees	2100	x1899
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x5013
1975C	Chamo and Mocha's Array binary search, brute force, greedy	1200	x12604
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x15551
1975A	Bazoka and Mocha's Array brute force, greedy, implementation, sortings	800	x17104
1974G	Money Buys Less Happiness Now data structures, greedy, sortings	2000	x3630
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x3077
1974E	Money Buys Happiness dp	1800	x6704
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x12938
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x13906
1974B	Symmetric Encoding implementation, sortings, strings	800	x27938

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