Problemset - Codeforces

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Pinely Round 4 (Div. 1 + Div. 2)
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Problems

#	Name
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1066
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x230
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x142
1924E	Paper Cutting Again combinatorics, probabilities	3100	x414
1924D	Balanced Subsequences combinatorics, dp, math	2700	x915
1924C	Fractal Origami geometry, math, matrices	2400	x1100
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x359
1922F	Replace on Segment dp, graph matchings	2500	x1293
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x434
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x919
1919G	Tree LGM constructive algorithms, divide and conquer, games, trees	3500	x176
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x786
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x817
1918G	Permutation of Given constructive algorithms, math	2700	x440
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x825
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x933
1917E	Construct Matrix constructive algorithms, math	2500	x1322
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x519
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x600
1916G	Optimizations From Chelsu divide and conquer, dp, number theory, trees	3500	x143
1916F	Group Division constructive algorithms, dfs and similar, graphs, greedy	2900	x439
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x305
1913E	Matrix Problem flows, graphs	2400	x957
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x56
1912H	Hypercatapult Commute graphs	2400	x398
1912G	Great City Saint Petersburg data structures	2400	x440
1912F	Fugitive Frenzy math, probabilities	3100	x109
1912C	Cactus Transformation constructive algorithms	3300	x54
1910J	Two Colors *special problem	2900	x48
1910I	Inverse Problem *special problem, combinatorics, dp	2700	x47
1910H	Sum of Digits of Sums *special problem, binary search, data structures	2400	x85
1910G	Pool Records *special problem, greedy	2700	x58
1909H	Parallel Swaps Sort constructive algorithms, data structures	3500	x72
1909G	Pumping Lemma hashing, strings	3000	x373
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x878
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1314
1906L	Palindromic Parentheses constructive algorithms	2500	x463
1906K	Deck-Building Game divide and conquer, math	2500	x275
1906I	Contingency Plan 2 graph matchings	2900	x132
1906G	Grid Game 2 games, number theory	2900	x159
1906D	Spaceship Exploration binary search, geometry	2800	x104
1906C	Cursed Game interactive	3000	x168
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x488
1905F	Field Should Not Be Empty brute force, data structures, divide and conquer	2600	x508
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x906
1904F	Beautiful Tree data structures, dfs and similar, graphs, implementation, trees	2800	x339
1904E	Tree Queries data structures, dfs and similar, graphs, implementation, trees	2500	x901
1903F	Babysitting 2-sat, binary search, data structures, graphs, trees	2500	x597
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x743
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x956
1901F	Landscaping binary search, geometry, two pointers	2900	x149
1900F	Local Deletions binary search, data structures, implementation	2800	x276
1898F	Vova Escapes the Matrix brute force, dfs and similar, divide and conquer, shortest paths	2600	x781
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x98
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x87
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x325
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x694
1895G	Two Characters, Two Colors binary search, data structures, dp, flows, greedy	3100	x182
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x707
1893E	Cacti Symphony combinatorics, dfs and similar, dp, graphs	3500	x188
1893D	Colorful Constructive constructive algorithms, data structures, greedy	2600	x850
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x801
1889F	Doremy's Average Tree data structures, dp, greedy, trees	3500	x73
1889E	Doremy's Swapping Trees dfs and similar, graphs, trees	3500	x106
1889D	Game of Stacks brute force, dfs and similar, graphs, implementation, trees	3000	x547
1889C2	Doremy's Drying Plan (Hard Version) data structures, dp	2600	x932
1887F	Minimum Segments constructive algorithms	3400	x125
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x344
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x849
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1660
1886F	Diamond Theft data structures, greedy	3300	x163
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1396
1884E	Hard Design greedy, implementation, math	2800	x274
1882E2	Two Permutations (Hard Version) constructive algorithms	3100	x289
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x990
1879F	Last Man Standing brute force, data structures, number theory	2800	x495
1879E	Interactive Game with Coloring brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees	2400	x1227
1876G	Clubstep binary search, brute force, data structures, greedy, trees	3500	x119
1876F	Indefinite Clownfish binary search, graphs	3500	x127
1876E	Ball-Stackable constructive algorithms, data structures, dp, trees	3300	x261
1876D	Lexichromatography combinatorics, dfs and similar, dsu, graphs, two pointers	2500	x842
1874G	Jellyfish and Inscryption dp	3500	x80
1874F	Jellyfish and OEIS dp	3500	x194
1874E	Jellyfish and Hack dp, math	3000	x296
1874D	Jellyfish and Miku divide and conquer, dp, math, probabilities	2800	x693
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1114
1870H	Standard Graph Problem data structures, graphs, greedy, trees	3500	x81
1870G	MEXanization data structures	3300	x209
1870F	Lazy Numbers binary search, math	2900	x478
1868F	LIS? data structures, greedy, implementation	3500	x72
1868E	Min-Sum-Max constructive algorithms, dp, greedy	3500	x79
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x258
1868C	Travel Plan combinatorics, dp, implementation, math, trees	2400	x1116
1867F	Most Different Tree brute force, constructive algorithms, dfs and similar, greedy, hashing	2700	x409
1866M	Mighty Rock Tower brute force, combinatorics, dp, math, probabilities	2400	x726
1866L	Lihmuf Balling binary search, brute force, math	2400	x696
1866K	Keen Tree Calculation binary search, data structures, dp, geometry, graphs, implementation, trees	2500	x433
1866J	Jackets and Packets dp	2800	x280
1866F	Freak Joker Process binary search, data structures, sortings	3100	x130
1866E	Elevators of Tamem dp	2700	x296