Problemset - Codeforces

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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
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Problems

#	Name
1922C	Closest Cities greedy, implementation, math	1300	x18711
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x20840
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3935
1921E	Eat the Chip brute force, games, greedy, math	1600	x9914
1921C	Sending Messages greedy, math	900	x29611
1921A	Square greedy, math	800	x43786
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2767
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5665
1920C	Partitioning the Array brute force, math, number theory	1600	x13907
1920B	Summation Game games, greedy, math, sortings	1100	x21104
1920A	Satisfying Constraints brute force, greedy, math	800	x27980
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x886
1919A	Wallet Exchange games, math	800	x33559
1918G	Permutation of Given constructive algorithms, math	2700	x475
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x14210
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x30406
1917E	Construct Matrix constructive algorithms, math	2500	x1408
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1821
1917C	Watering an Array brute force, greedy, implementation, math	1600	x10610
1917A	Least Product constructive algorithms, math	800	x25639
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x539
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x616
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x8598
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x18008
1916B	Two Divisors constructive algorithms, math, number theory	1000	x26204
1916A	2023 constructive algorithms, implementation, math, number theory	800	x26166
1915E	Romantic Glasses data structures, greedy, math	1300	x22283
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1926
1914C	Quests greedy, math	1100	x24707
1914B	Preparing for the Contest constructive algorithms, math	800	x30567
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x57
1912F	Fugitive Frenzy math, probabilities	3100	x116
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x951
1912D	Divisibility Test math	1900	x1530
1912B	Blueprint for Seating combinatorics, divide and conquer, math	2100	x1102
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x119
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x953
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x1856
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1414
1909D	Split Plus K greedy, math, number theory	1900	x4497
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x11344
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x17469
1909A	Distinct Buttons implementation, math	800	x18019
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x20440
1906M	Triangle Construction greedy, math	1700	x2794
1906K	Deck-Building Game divide and conquer, math	2500	x327
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x1009
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3925
1905A	Constructive Problems constructive algorithms, math	800	x23091
1903E	Geo Game greedy, interactive, math	2000	x2069
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x1047
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x13987
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x7128
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x12150
1901B	Chip and Ribbon greedy, math	1100	x15126
1901A	Line Trip greedy, math	800	x33838
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4324
1900B	Laura and Operations dp, math	900	x17641
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13688
1899A	Game with Integers games, math, number theory	800	x48104
1898D	Absolute Beauty greedy, math	1900	x5331
1898B	Milena and Admirer greedy, math	1500	x12130
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x105
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x90
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x733
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5866
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x774
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x6139
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11377
1895B	Points and Minimum Distance greedy, math, sortings	800	x20551
1895A	Treasure Chest math	800	x24546
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x854
1891D	Suspicious logarithms binary search, brute force, math	1900	x4015
1891B	Deja Vu brute force, math, sortings	1100	x18443
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x7479
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x983
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1504
1886D	Monocarp and the Set combinatorics, data structures, math	2100	x3633
1886B	Fear of the Dark binary search, geometry, math	1200	x16343
1886A	Sum of Three brute force, constructive algorithms, math	800	x26013
1884E	Hard Design greedy, implementation, math	2800	x322
1884D	Counting Rhyme dp, math, number theory	2100	x3294
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12815
1884A	Simple Design brute force, greedy, math	800	x17581
1883C	Raspberries dp, math	1000	x28456
1883A	Morning math	800	x25911
1881D	Divide and Equalize math, number theory	1300	x17769
1881B	Three Threadlets math	900	x25722
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x7570
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x4172
1878C	Vasilije in Cacak math	900	x33999
1878B	Aleksa and Stack constructive algorithms, math	800	x31649
1877C	Joyboard math, number theory	1200	x11163
1877A	Goals of Victory math	800	x24512
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11907
1874E	Jellyfish and Hack dp, math	3000	x322
1874D	Jellyfish and Miku divide and conquer, dp, math, probabilities	2800	x743
1874C	Jellyfish and EVA dp, graphs, greedy, math, probabilities	2300	x1746
1873F	Money Trees binary search, greedy, math, two pointers	1300	x15880
1873C	Target Practice implementation, math	800	x41976