Problemset - Codeforces

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Codeforces Round 1002 (Div. 2)
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Problems

#	Name
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x11368
1942B	Bessie and MEX constructive algorithms, math	1100	x14414
1942A	Farmer John's Challenge constructive algorithms, math	800	x17653
1941G	Rudolf and Subway constructive algorithms, dfs and similar, graphs, shortest paths	2000	x3734
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x6350
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x10195
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x19008
1941C	Rudolf and the Ugly String dp, greedy, strings	900	x34700
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x31031
1941A	Rudolf and the Ticket brute force, math	800	x43693
1940D	Almost Certainly *special problem, constructive algorithms, data structures, sortings		x149
1940C	Burenka and Pether *special problem, data structures, dfs and similar, divide and conquer, dsu, graphs, sortings, trees		x36
1940B	Three Arrays *special problem, constructive algorithms, implementation, sortings		x218
1940A	Parallel Universes *special problem, constructive algorithms, dfs and similar, dsu, graphs		x88
1939D	Big Persimmon *special problem, dp, games		x102
1939C	More Gifts *special problem, dfs and similar, two pointers		x323
1939B	Evidence Board *special problem, constructive algorithms, dfs and similar, graphs, trees		x250
1939A	Draw Polygon Lines *special problem, constructive algorithms, dp, geometry, interactive		x24
1938M	Zig-zag	3500	x64
1938L	XOR Operations	2800	x300
1938K	Tree Quiz	2400	x652
1938J	There and Back Again	2100	x1339
1938I	Symmetric Boundary	2800	x79
1938H	Pho Restaurant	1600	x2250
1938G	Personality Test	2300	x1093
1938F	Forming Groups	2400	x790
1938E	Duplicates	2200	x1057
1938D	Bánh Bò	3300	x92
1938C	Bit Counting Sequence	1900	x1533
1938B	Attraction Score	3000	x201
1938A	Antiparticle Antiphysics	3500	x58
1937B	Binary Path dp, greedy, implementation	1300	x15606
1937A	Shuffle Party implementation, math	800	x23548
1936F	Grand Finale: Circles binary search, geometry	3300	x149
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x126
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x537
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1391
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x3074
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7765
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x465
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1439
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x8578
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x8511
1935B	Informatics in MAC constructive algorithms	1200	x19211
1935A	Entertainment in MAC constructive algorithms, strings	800	x28650
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x251
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1440
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3640
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x7142
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x19691
1934A	Too Min Too Max greedy, math	800	x25895
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x1013
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2582
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x11808
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x21042
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x23314
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x33616
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x39005
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x1131
1932F	Feed Cats data structures, dp, sortings	1900	x4368
1932E	Final Countdown implementation, math, number theory	1600	x8660
1932D	Card Game greedy, implementation	1400	x11924
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x16461
1932B	Chaya Calendar number theory	1100	x21486
1932A	Thorns and Coins dp, greedy, implementation	800	x30499
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2968
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x8479
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x17162
1931D	Divisible Pairs combinatorics, math, number theory	1300	x20505
1931C	Make Equal Again brute force, greedy, math	1000	x30170
1931B	Make Equal greedy	800	x32979
1931A	Recovering a Small String brute force, strings	800	x37030
1930I	Counting Is Fun combinatorics	3500	x75
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x208
1930G	Prefix Max Set Counting data structures, dp, trees	3100	x374
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x751
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1224
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2746
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4296
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x7354
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x15949
1930A	Maximise The Score greedy, sortings	800	x19030
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1853
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1766
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4997
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x15531
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x25666
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x32384
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x277
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1789
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x4479
1928C	Physical Education Lesson brute force, math, number theory	1600	x8979
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x18326
1928A	Rectangle Cutting geometry, math	800	x23160
1927G	Paint Charges data structures, dp, greedy, math	2300	x1750
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x4607
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x14715
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x23117
1927C	Choose the Different Ones! brute force, greedy, math	1000	x28798
1927B	Following the String constructive algorithms, greedy, strings	900	x34402