Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
4 days
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Problems

#	Name
1938D	Bánh Bò	3300	x77
1938C	Bit Counting Sequence	1900	x1257
1938B	Attraction Score	3000	x147
1938A	Antiparticle Antiphysics	3500	x37
1937B	Binary Path dp, greedy, implementation	1300	x13102
1937A	Shuffle Party implementation, math	800	x21461
1936F	Grand Finale: Circles binary search, geometry	3300	x66
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x96
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x416
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1094
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2452
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6573
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x392
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1171
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7334
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7133
1935B	Informatics in MAC constructive algorithms	1200	x16460
1935A	Entertainment in MAC constructive algorithms, strings	800	x25469
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x183
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1192
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3080
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6044
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x16679
1934A	Too Min Too Max greedy, math	800	x23405
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x866
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2202
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9725
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17818
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20511
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x29966
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x35479
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x881
1932F	Feed Cats data structures, dp, sortings	1900	x3400
1932E	Final Countdown implementation, math, number theory	1600	x6809
1932D	Card Game greedy, implementation	1400	x9913
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x13701
1932B	Chaya Calendar number theory	1100	x18412
1932A	Thorns and Coins dp, greedy, implementation	800	x26758
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2449
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x6959
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x13374
1931D	Divisible Pairs combinatorics, math, number theory	1300	x15868
1931C	Make Equal Again brute force, greedy, math	1000	x26089
1931B	Make Equal greedy	800	x30035
1931A	Recovering a Small String brute force, strings	800	x33586
1930I	Counting Is Fun combinatorics	3500	x50
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x123
1930G	Prefix Max Set Counting data structures, dp, trees	3100	x250
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x614
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x986
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2368
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3696
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6412
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x13635
1930A	Maximise The Score greedy, sortings	800	x17166
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1628
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1513
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4174
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13260
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x23794
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x28912
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x210
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1549
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3753
1928C	Physical Education Lesson brute force, math, number theory	1600	x7483
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x15304
1928A	Rectangle Cutting geometry, math	800	x21196
1927G	Paint Charges data structures, dp, greedy, math	2300	x1493
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3807
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x12427
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18310
1927C	Choose the Different Ones! brute force, greedy, math	1000	x25594
1927B	Following the String constructive algorithms, greedy, strings	900	x30425
1927A	Make it White greedy, strings	800	x39758
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x2961
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1495
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10067
1926D	Vlad and Division bitmasks, greedy	1300	x13622
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x23247
1926B	Vlad and Shapes geometry, implementation	800	x29859
1926A	Vlad and the Best of Five implementation	800	x42188
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3228
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18241
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x27165
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x129
1924E	Paper Cutting Again combinatorics, probabilities	3100	x394
1924D	Balanced Subsequences combinatorics, dp, math	2700	x778
1924C	Fractal Origami geometry, math, matrices	2400	x1046
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2279
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12353
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x332
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3187
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5911
1923C	Find B constructive algorithms, greedy	1400	x13164
1923B	Monsters Attack! dp, greedy, implementation	1100	x16166
1923A	Moving Chips greedy, implementation	800	x23262
1922F	Replace on Segment dp, graph matchings	2500	x1168
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7050
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5231
1922C	Closest Cities greedy, implementation, math	1300	x16883