Problemset - Codeforces

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Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
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Problems

#	Name
1886C	Decreasing String implementation, strings	1600	x11482
1886B	Fear of the Dark binary search, geometry, math	1200	x16138
1886A	Sum of Three brute force, constructive algorithms, math	800	x25803
1884E	Hard Design greedy, implementation, math	2800	x317
1884D	Counting Rhyme dp, math, number theory	2100	x3204
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x6056
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12666
1884A	Simple Design brute force, greedy, math	800	x17426
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x5385
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x10950
1883F	You Are So Beautiful data structures	1400	x9475
1883E	Look Back bitmasks, greedy	1700	x8083
1883D	In Love data structures, greedy	1500	x11464
1883C	Raspberries dp, math	1000	x27378
1883B	Chemistry strings	900	x32056
1883A	Morning math	800	x25623
1882E2	Two Permutations (Hard Version) constructive algorithms	3100	x291
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x1018
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5454
1882C	Card Game brute force, greedy	1500	x12308
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x15391
1882A	Increasing Sequence greedy	800	x25314
1881G	Anya and the Mysterious String binary search, data structures	2000	x2367
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x6905
1881E	Block Sequence dp	1500	x14078
1881D	Divide and Equalize math, number theory	1300	x17140
1881C	Perfect Square brute force, implementation	1200	x17059
1881B	Three Threadlets math	900	x25368
1881A	Don't Try to Count brute force, strings	800	x31849
1879F	Last Man Standing brute force, data structures, number theory	2800	x510
1879E	Interactive Game with Coloring brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees	2400	x1264
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x7379
1879C	Make it Alternating combinatorics, dp, greedy	1300	x16940
1879B	Chips on the Board constructive algorithms, greedy	900	x22425
1879A	Rigged! greedy	800	x23123
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1183
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x4108
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x12783
1878D	Reverse Madness data structures, greedy	1600	x8316
1878C	Vasilije in Cacak math	900	x32885
1878B	Aleksa and Stack constructive algorithms, math	800	x31386
1878A	How Much Does Daytona Cost? greedy	800	x44303
1877C	Joyboard math, number theory	1200	x10966
1877A	Goals of Victory math	800	x23337
1876G	Clubstep binary search, brute force, data structures, greedy, trees	3500	x126
1876F	Indefinite Clownfish binary search, graphs	3500	x133
1876E	Ball-Stackable constructive algorithms, data structures, dp, trees	3300	x267
1876D	Lexichromatography combinatorics, dfs and similar, dsu, graphs, two pointers	2500	x876
1876C	Autosynthesis constructive algorithms, dfs and similar, graphs, greedy, sortings	2100	x2286
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x8270
1876A	Helmets in Night Light greedy, sortings	1000	x17780
1875D	Jellyfish and Mex dp	1600	x8653
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11718
1875A	Jellyfish and Undertale brute force, greedy	900	x25424
1874G	Jellyfish and Inscryption dp	3500	x85
1874F	Jellyfish and OEIS dp	3500	x207
1874E	Jellyfish and Hack dp, math	3000	x314
1874D	Jellyfish and Miku divide and conquer, dp, math, probabilities	2800	x725
1874C	Jellyfish and EVA dp, graphs, greedy, math, probabilities	2300	x1703
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1142
1874A	Jellyfish and Game brute force, games, greedy, implementation	1200	x17030
1873H	Mad City dfs and similar, dsu, games, graphs, shortest paths, trees	1700	x7362
1873G	ABBC or BACB constructive algorithms, greedy	1500	x13234
1873F	Money Trees binary search, greedy, math, two pointers	1300	x15478
1873E	Building an Aquarium binary search, sortings	1100	x26667
1873D	1D Eraser greedy, implementation, two pointers	800	x35025
1873C	Target Practice implementation, math	800	x40554
1873B	Good Kid brute force, greedy, math	800	x48472
1873A	Short Sort brute force, implementation	800	x53874
1872G	Replace With Product brute force, greedy, math	2000	x4269
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6321
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x13558
1872D	Plus Minus Permutation math	1200	x23953
1872C	Non-coprime Split math, number theory	1100	x23375
1872B	The Corridor or There and Back Again greedy, implementation	900	x27864
1872A	Two Vessels brute force, greedy, math	800	x39083
1870H	Standard Graph Problem data structures, graphs, greedy, trees	3500	x85
1870G	MEXanization data structures	3300	x217
1870F	Lazy Numbers binary search, math	2900	x487
1870E	Another MEX Problem bitmasks, brute force, dp, shortest paths	2300	x2350
1870D	Prefix Purchase greedy, implementation, sortings	1800	x6977
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11475
1870B	Friendly Arrays bitmasks, greedy, math	1200	x14153
1870A	MEXanized Array constructive algorithms, greedy, math	800	x19000
1869B	2D Traveling geometry, math, shortest paths, sortings	1100	x16091
1869A	Make It Zero constructive algorithms	900	x21638
1868F	LIS? data structures, greedy, implementation	3500	x76
1868E	Min-Sum-Max constructive algorithms, dp, greedy	3500	x84
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x286
1868C	Travel Plan combinatorics, dp, implementation, math, trees	2400	x1152
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2407
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6968
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x11994
1867F	Most Different Tree brute force, constructive algorithms, dfs and similar, greedy, hashing	2700	x419
1867E2	Salyg1n and Array (hard version) constructive algorithms, interactive	2200	x3181
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3751
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5770
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x11233
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16731
1867A	green_gold_dog, array and permutation constructive algorithms, sortings	800	x19916