Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x10165
1942B	Bessie and MEX constructive algorithms, math	1100	x13027
1942A	Farmer John's Challenge constructive algorithms, math	800	x16436
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x27773
1941A	Rudolf and the Ticket brute force, math	800	x40378
1937A	Shuffle Party implementation, math	800	x22216
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x101
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2578
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6884
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1227
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7661
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6288
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x17545
1934A	Too Min Too Max greedy, math	800	x24264
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x911
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x10312
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x18743
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x21412
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x31029
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x36606
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x931
1932E	Final Countdown implementation, math, number theory	1600	x7388
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x14573
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2557
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x14196
1931D	Divisible Pairs combinatorics, math, number theory	1300	x16926
1931C	Make Equal Again brute force, greedy, math	1000	x27229
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1043
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x14282
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1685
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1566
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4353
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13833
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x24354
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x30021
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x222
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1601
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3926
1928C	Physical Education Lesson brute force, math, number theory	1600	x7919
1928A	Rectangle Cutting geometry, math	800	x21769
1927G	Paint Charges data structures, dp, greedy, math	2300	x1543
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x13026
1927C	Choose the Different Ones! brute force, greedy, math	1000	x26463
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10853
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3364
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18902
1924D	Balanced Subsequences combinatorics, dp, math	2700	x807
1924C	Fractal Origami geometry, math, matrices	2400	x1076
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2354
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7283
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5377
1922C	Closest Cities greedy, implementation, math	1300	x17426
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x19624
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3587
1921E	Eat the Chip brute force, games, greedy, math	1600	x9206
1921C	Sending Messages greedy, math	900	x28068
1921A	Square greedy, math	800	x41056
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2467
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5271
1920C	Partitioning the Array brute force, math, number theory	1600	x12387
1920B	Summation Game games, greedy, math, sortings	1100	x19816
1920A	Satisfying Constraints brute force, greedy, math	800	x26941
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x801
1919A	Wallet Exchange games, math	800	x32307
1918G	Permutation of Given constructive algorithms, math	2700	x434
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x13112
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x29306
1917E	Construct Matrix constructive algorithms, math	2500	x1301
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1698
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9730
1917A	Least Product constructive algorithms, math	800	x24662
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x510
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x591
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x8108
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x17122
1916B	Two Divisors constructive algorithms, math, number theory	1000	x24428
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24999
1915E	Romantic Glasses data structures, greedy, math	1300	x19539
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1731
1914C	Quests greedy, math	1100	x21905
1914B	Preparing for the Contest constructive algorithms, math	800	x29207
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x55
1912F	Fugitive Frenzy math, probabilities	3100	x109
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x808
1912D	Divisibility Test math	1900	x1366
1912B	Blueprint for Seating combinatorics, divide and conquer, math	2100	x961
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x103
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x855
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x1678
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1289
1909D	Split Plus K greedy, math, number theory	1900	x4122
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x10404
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x15041
1909A	Distinct Buttons implementation, math	800	x15975
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x19053
1906M	Triangle Construction greedy, math	1700	x2436
1906K	Deck-Building Game divide and conquer, math	2500	x271
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x885
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3613
1905A	Constructive Problems constructive algorithms, math	800	x22261