Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
01:00:07
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Problems

#	Name
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x4279
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3468
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1666
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3566
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x150
1924E	Paper Cutting Again combinatorics, probabilities	3100	x425
1924D	Balanced Subsequences combinatorics, dp, math	2700	x967
1924C	Fractal Origami geometry, math, matrices	2400	x1135
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2497
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x371
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3724
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6631
1922F	Replace on Segment dp, graph matchings	2500	x1366
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7593
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5607
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1224
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3790
1921E	Eat the Chip brute force, games, greedy, math	1600	x9666
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x447
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x940
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2653
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5504
1920C	Partitioning the Array brute force, math, number theory	1600	x13293
1919H	Tree Diameter interactive, trees	2000	x142
1919G	Tree LGM constructive algorithms, divide and conquer, games, trees	3500	x179
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x820
1919F1	Wine Factory (Easy Version) data structures, greedy	2300	x2159
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x843
1919D	01 Tree constructive algorithms, data structures, dsu, greedy, sortings, trees	2100	x3824
1918G	Permutation of Given constructive algorithms, math	2700	x460
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x856
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1699
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4699
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x947
1917E	Construct Matrix constructive algorithms, math	2500	x1357
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1767
1917C	Watering an Array brute force, greedy, implementation, math	1600	x10283
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x528
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x607
1916G	Optimizations From Chelsu divide and conquer, dp, number theory, trees	3500	x147
1916F	Group Division constructive algorithms, dfs and similar, graphs, greedy	2900	x450
1916E	Happy Life in University data structures, dfs and similar, greedy, trees	2300	x2234
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x8431
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x6194
1914G2	Light Bulbs (Hard Version) combinatorics, data structures, dfs and similar, dp, graphs, hashing	2300	x1332
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1819
1914F	Programming Competition dfs and similar, dp, graph matchings, greedy, trees	1900	x4031
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x319
1913E	Matrix Problem flows, graphs	2400	x997
1913D	Array Collapse data structures, divide and conquer, dp, trees	2100	x3089
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2386
1912J	Joy of Pokémon Observation	2300	x555
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x57
1912H	Hypercatapult Commute graphs	2400	x412
1912G	Great City Saint Petersburg data structures	2400	x455
1912F	Fugitive Frenzy math, probabilities	3100	x112
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x892
1912D	Divisibility Test math	1900	x1437
1912C	Cactus Transformation constructive algorithms	3300	x56
1912B	Blueprint for Seating combinatorics, divide and conquer, math	2100	x1007
1912A	Accumulator Apex data structures, implementation, sortings	1900	x2044
1910J	Two Colors *special problem	2900	x48
1910I	Inverse Problem *special problem, combinatorics, dp	2700	x49
1910H	Sum of Digits of Sums *special problem, binary search, data structures	2400	x85
1910G	Pool Records *special problem, greedy	2700	x58
1910F	Build Railway Stations *special problem, greedy, trees	2000	x174
1910E	Maximum Sum Subarrays *special problem, dp	2100	x198
1910D	Remove and Add *special problem, greedy	1800	x349
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x625
1910B	Security Guard *special problem, greedy	1600	x668
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x118
1909H	Parallel Swaps Sort constructive algorithms, data structures	3500	x76
1909G	Pumping Lemma hashing, strings	3000	x388
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x901
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x1762
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1351
1909D	Split Plus K greedy, math, number theory	1900	x4351
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1893
1907F	Shift and Reverse greedy, sortings	1800	x4819
1907E	Good Triples brute force, combinatorics, number theory	1600	x10059
1906M	Triangle Construction greedy, math	1700	x2611
1906L	Palindromic Parentheses constructive algorithms	2500	x496
1906K	Deck-Building Game divide and conquer, math	2500	x296
1906J	Count BFS Graph combinatorics, dp	2100	x750
1906I	Contingency Plan 2 graph matchings	2900	x147
1906H	Twin Friends combinatorics, dp	2200	x687
1906G	Grid Game 2 games, number theory	2900	x189
1906F	Maximize The Value data structures, sortings	2100	x1088
1906E	Merge Not Sort constructive algorithms, dp	1900	x1502
1906D	Spaceship Exploration binary search, geometry	2800	x111
1906C	Cursed Game interactive	3000	x178
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x544
1905F	Field Should Not Be Empty brute force, data structures, divide and conquer	2600	x523
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x941
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3787
1904F	Beautiful Tree data structures, dfs and similar, graphs, implementation, trees	2800	x365
1904E	Tree Queries data structures, dfs and similar, graphs, implementation, trees	2500	x962
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4327
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x6592
1903F	Babysitting 2-sat, binary search, data structures, graphs, trees	2500	x612