Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1914E1	Game with Marbles (Easy Version) brute force, games, greedy, sortings	1400	x14635
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x43180
1914C	Quests greedy, math	1100	x44576
1914B	Preparing for the Contest constructive algorithms, math	800	x33714
1914A	Problemsolving Log implementation, strings	800	x35925
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x687
1913E	Matrix Problem flows, graphs	2400	x1401
1913D	Array Collapse data structures, divide and conquer, dp, trees	2100	x4393
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x17995
1913B	Swap and Delete strings	1000	x59084
1913A	Rating Increase implementation	800	x27674
1912L	LOL Lovers strings	800	x8874
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x4715
1912J	Joy of Pokémon Observation	2300	x768
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x66
1912H	Hypercatapult Commute graphs	2400	x635
1912G	Great City Saint Petersburg data structures	2400	x610
1912F	Fugitive Frenzy math, probabilities	3100	x145
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x1329
1912D	Divisibility Test math	1900	x2079
1912C	Cactus Transformation constructive algorithms	3300	x75
1912B	Blueprint for Seating combinatorics, divide and conquer, math	2100	x1505
1912A	Accumulator Apex data structures, implementation, sortings	1900	x3243
1910J	Two Colors *special problem	2900	x61
1910I	Inverse Problem *special problem, combinatorics, dp	2700	x70
1910H	Sum of Digits of Sums *special problem, binary search, data structures	2400	x115
1910G	Pool Records *special problem, greedy	2700	x79
1910F	Build Railway Stations *special problem, greedy, trees	2000	x231
1910E	Maximum Sum Subarrays *special problem, dp	2100	x252
1910D	Remove and Add *special problem, greedy	1800	x416
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x751
1910B	Security Guard *special problem, greedy	1600	x816
1910A	Username *special problem, implementation	1100	x2039
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x185
1909H	Parallel Swaps Sort constructive algorithms, data structures	3500	x120
1909G	Pumping Lemma hashing, strings	3000	x735
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x1310
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x2361
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1787
1909D	Split Plus K greedy, math, number theory	1900	x5255
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x13603
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x35361
1909A	Distinct Buttons implementation, math	800	x19142
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x2488
1907F	Shift and Reverse greedy, sortings	1800	x6147
1907E	Good Triples brute force, combinatorics, number theory	1600	x17398
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x26498
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x23824
1907B	YetnotherrokenKeoard data structures, implementation, strings	1000	x31526
1907A	Rook implementation	800	x42678
1906M	Triangle Construction greedy, math	1700	x3604
1906L	Palindromic Parentheses constructive algorithms	2500	x809
1906K	Deck-Building Game divide and conquer, math	2500	x633
1906J	Count BFS Graph combinatorics, dp	2100	x1175
1906I	Contingency Plan 2 graph matchings	2900	x330
1906H	Twin Friends combinatorics, dp	2200	x1173
1906G	Grid Game 2 games, number theory	2900	x447
1906F	Maximize The Value data structures, sortings	2100	x1840
1906E	Merge Not Sort constructive algorithms, dp	1900	x2656
1906D	Spaceship Exploration binary search, geometry	2800	x176
1906C	Cursed Game interactive	3000	x308
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x960
1906A	Easy As ABC brute force	1000	x6364
1905F	Field Should Not Be Empty brute force, data structures, divide and conquer	2600	x828
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x1356
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x4822
1905C	Largest Subsequence greedy, strings	1400	x14616
1905B	Begginer's Zelda greedy, trees	1100	x19071
1905A	Constructive Problems constructive algorithms, math	800	x24668
1904F	Beautiful Tree data structures, dfs and similar, graphs, implementation, trees	2800	x703
1904E	Tree Queries data structures, dfs and similar, graphs, implementation, trees	2500	x1422
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x5965
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x8957
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x26591
1904B	Collecting Game binary search, dp, greedy, sortings, two pointers	1100	x31854
1904A	Forked! brute force, implementation	900	x47020
1903F	Babysitting 2-sat, binary search, data structures, graphs, trees	2500	x1018
1903E	Geo Game greedy, interactive, math	2000	x2653
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x1127
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x7523
1903C	Theofanis' Nightmare constructive algorithms, greedy	1400	x15026
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x15224
1903A	Halloumi Boxes brute force, greedy, sortings	800	x94622
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x1597
1902E	Collapsing Strings data structures, strings, trees	1900	x6137
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x5539
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x17876
1902B	Getting Points binary search, brute force, greedy	1100	x16804
1902A	Binary Imbalance constructive algorithms	800	x23514
1901F	Landscaping binary search, geometry, two pointers	2900	x282
1901E	Compressed Tree dfs and similar, dp, graphs, greedy, sortings, trees	2200	x2082
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x8890
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x14743
1901B	Chip and Ribbon greedy, math	1100	x17356
1901A	Line Trip greedy, math	800	x89014
1900F	Local Deletions binary search, data structures, implementation	2800	x392
1900E	Transitive Graph dfs and similar, dp, dsu, graphs, implementation	2100	x2804
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x5774
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x15649
1900B	Laura and Operations dp, math	900	x21069

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