Problemset - Codeforces

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Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
12:00:03
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Problems

#	Name
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x8467
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x6243
1915F	Greetings data structures, divide and conquer, sortings	1500	x13526
1914G2	Light Bulbs (Hard Version) combinatorics, data structures, dfs and similar, dp, graphs, hashing	2300	x1349
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1839
1914F	Programming Competition dfs and similar, dp, graph matchings, greedy, trees	1900	x4056
1914E2	Game with Marbles (Hard Version) games, greedy, sortings	1400	x12264
1914E1	Game with Marbles (Easy Version) brute force, games, greedy, sortings	1400	x12108
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x322
1913E	Matrix Problem flows, graphs	2400	x1004
1913D	Array Collapse data structures, divide and conquer, dp, trees	2100	x3122
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2411
1912J	Joy of Pokémon Observation	2300	x561
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x57
1912H	Hypercatapult Commute graphs	2400	x416
1912G	Great City Saint Petersburg data structures	2400	x458
1912F	Fugitive Frenzy math, probabilities	3100	x112
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x900
1912D	Divisibility Test math	1900	x1454
1912C	Cactus Transformation constructive algorithms	3300	x56
1912B	Blueprint for Seating combinatorics, divide and conquer, math	2100	x1026
1912A	Accumulator Apex data structures, implementation, sortings	1900	x2069
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	x199
1910D	Remove and Add *special problem, greedy	1800	x349
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x626
1910B	Security Guard *special problem, greedy	1600	x669
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x118
1909H	Parallel Swaps Sort constructive algorithms, data structures	3500	x77
1909G	Pumping Lemma hashing, strings	3000	x390
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x925
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x1783
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1365
1909D	Split Plus K greedy, math, number theory	1900	x4383
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x11066
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1911
1907F	Shift and Reverse greedy, sortings	1800	x4846
1907E	Good Triples brute force, combinatorics, number theory	1600	x10122
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x14030
1906M	Triangle Construction greedy, math	1700	x2631
1906L	Palindromic Parentheses constructive algorithms	2500	x509
1906K	Deck-Building Game divide and conquer, math	2500	x298
1906J	Count BFS Graph combinatorics, dp	2100	x751
1906I	Contingency Plan 2 graph matchings	2900	x147
1906H	Twin Friends combinatorics, dp	2200	x691
1906G	Grid Game 2 games, number theory	2900	x191
1906F	Maximize The Value data structures, sortings	2100	x1099
1906E	Merge Not Sort constructive algorithms, dp	1900	x1517
1906D	Spaceship Exploration binary search, geometry	2800	x112
1906C	Cursed Game interactive	3000	x180
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x558
1905F	Field Should Not Be Empty brute force, data structures, divide and conquer	2600	x529
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x957
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3813
1905C	Largest Subsequence greedy, strings	1400	x12187
1904F	Beautiful Tree data structures, dfs and similar, graphs, implementation, trees	2800	x368
1904E	Tree Queries data structures, dfs and similar, graphs, implementation, trees	2500	x974
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4378
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x6645
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x12869
1903F	Babysitting 2-sat, binary search, data structures, graphs, trees	2500	x616
1903E	Geo Game greedy, interactive, math	2000	x2014
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x770
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5654
1903C	Theofanis' Nightmare constructive algorithms, greedy	1400	x11821
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x1007
1902E	Collapsing Strings data structures, strings, trees	1900	x4263
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x4108
1901F	Landscaping binary search, geometry, two pointers	2900	x153
1901E	Compressed Tree dfs and similar, dp, graphs, greedy, sortings, trees	2200	x1523
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6908
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x11882
1900F	Local Deletions binary search, data structures, implementation	2800	x287
1900E	Transitive Graph dfs and similar, dp, dsu, graphs, implementation	2100	x2061
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4158
1899G	Unusual Entertainment data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers	1900	x3193
1899F	Alex's whims constructive algorithms, graphs, greedy, shortest paths, trees	1600	x7565
1898F	Vova Escapes the Matrix brute force, dfs and similar, divide and conquer, shortest paths	2600	x815
1898E	Sofia and Strings data structures, greedy, sortings, strings, two pointers	2200	x2260
1898D	Absolute Beauty greedy, math	1900	x5225
1898C	Colorful Grid constructive algorithms	1700	x5478
1898B	Milena and Admirer greedy, math	1500	x11800
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x101
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	x343
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x714
1896E	Permutation Sorting data structures, sortings	2100	x2214
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5703
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x9549
1895G	Two Characters, Two Colors binary search, data structures, dp, flows, greedy	3100	x193
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x755
1895E	Infinite Card Game binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers	2300	x1555
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x6011
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11051
1893E	Cacti Symphony combinatorics, dfs and similar, dp, graphs	3500	x193
1893D	Colorful Constructive constructive algorithms, data structures, greedy	2600	x895