Problemset - Codeforces

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

#	Name
1906C	Cursed Game interactive	3000	x182
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x565
1906A	Easy As ABC brute force	1000	x4079
1905F	Field Should Not Be Empty brute force, data structures, divide and conquer	2600	x534
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x982
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3829
1905C	Largest Subsequence greedy, strings	1400	x12238
1905B	Begginer's Zelda greedy, trees	1100	x16348
1905A	Constructive Problems constructive algorithms, math	800	x22918
1904F	Beautiful Tree data structures, dfs and similar, graphs, implementation, trees	2800	x377
1904E	Tree Queries data structures, dfs and similar, graphs, implementation, trees	2500	x979
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4400
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x6687
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x12981
1904B	Collecting Game binary search, dp, greedy, sortings, two pointers	1100	x15322
1904A	Forked! brute force, implementation	900	x19797
1903F	Babysitting 2-sat, binary search, data structures, graphs, trees	2500	x618
1903E	Geo Game greedy, interactive, math	2000	x2021
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x772
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5682
1903C	Theofanis' Nightmare constructive algorithms, greedy	1400	x11860
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x12745
1903A	Halloumi Boxes brute force, greedy, sortings	800	x31952
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x1017
1902E	Collapsing Strings data structures, strings, trees	1900	x4284
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x4123
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x13703
1902B	Getting Points binary search, brute force, greedy	1100	x14389
1902A	Binary Imbalance constructive algorithms	800	x21055
1901F	Landscaping binary search, geometry, two pointers	2900	x154
1901E	Compressed Tree dfs and similar, dp, graphs, greedy, sortings, trees	2200	x1531
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6942
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x11916
1901B	Chip and Ribbon greedy, math	1100	x14958
1901A	Line Trip greedy, math	800	x31980
1900F	Local Deletions binary search, data structures, implementation	2800	x287
1900E	Transitive Graph dfs and similar, dp, dsu, graphs, implementation	2100	x2065
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4173
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x11467
1900B	Laura and Operations dp, math	900	x17403
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x27684
1899G	Unusual Entertainment data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers	1900	x3206
1899F	Alex's whims constructive algorithms, graphs, greedy, shortest paths, trees	1600	x7596
1899E	Queue Sort greedy, implementation, sortings	1300	x15430
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13497
1899C	Yarik and Array dp, greedy, two pointers	1100	x21078
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x20599
1899A	Game with Integers games, math, number theory	800	x45935
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	x2269
1898D	Absolute Beauty greedy, math	1900	x5249
1898C	Colorful Grid constructive algorithms	1700	x5509
1898B	Milena and Admirer greedy, math	1500	x11851
1898A	Milica and String brute force, implementation, strings	800	x15994
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x102
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	x722
1896E	Permutation Sorting data structures, sortings	2100	x2220
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5732
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x9583
1896B	AB Flipping greedy, strings, two pointers	900	x14739
1896A	Jagged Swaps sortings	800	x23906
1895G	Two Characters, Two Colors binary search, data structures, dp, flows, greedy	3100	x193
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x757
1895E	Infinite Card Game binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers	2300	x1557
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x6043
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11081
1895B	Points and Minimum Distance greedy, math, sortings	800	x20439
1895A	Treasure Chest math	800	x24370
1894B	Two Out of Three constructive algorithms	1000	x15886
1894A	Secret Sport implementation, strings	800	x18917
1893E	Cacti Symphony combinatorics, dfs and similar, dp, graphs	3500	x194
1893D	Colorful Constructive constructive algorithms, data structures, greedy	2600	x897
1893C	Freedom of Choice brute force, greedy, implementation	2000	x2681
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x8872
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x12341
1891F	A Growing Tree data structures, dfs and similar, trees	2000	x3751
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x827
1891D	Suspicious logarithms binary search, brute force, math	1900	x3969
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x13232
1891B	Deja Vu brute force, math, sortings	1100	x17962
1891A	Sorting with Twos constructive algorithms, sortings	800	x19220
1890B	Qingshan Loves Strings constructive algorithms, implementation	800	x17506
1890A	Doremy's Paint 3 constructive algorithms	800	x26619
1889F	Doremy's Average Tree data structures, dp, greedy, trees	3500	x79
1889E	Doremy's Swapping Trees dfs and similar, graphs, trees	3500	x110
1889D	Game of Stacks brute force, dfs and similar, graphs, implementation, trees	3000	x590
1889C2	Doremy's Drying Plan (Hard Version) data structures, dp	2600	x978
1889C1	Doremy's Drying Plan (Easy Version) brute force, data structures, dp, greedy, sortings	2000	x3262
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x7348
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x13127
1887F	Minimum Segments constructive algorithms	3400	x129
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x373
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x875
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1720
1887B	Time Travel binary search, graphs, shortest paths	1900	x2968
1886F	Diamond Theft data structures, greedy	3300	x190
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1459
1886D	Monocarp and the Set combinatorics, data structures, math	2100	x3573