Problemset - Codeforces

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Codeforces Round 988 (Div. 3)
12:47:43
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Problems

#	Name
1939B	Evidence Board *special problem, constructive algorithms, dfs and similar, graphs, trees		x247
1939A	Draw Polygon Lines *special problem, constructive algorithms, dp, geometry, interactive		x24
1938M	Zig-zag	3500	x60
1938L	XOR Operations	2800	x294
1938K	Tree Quiz	2400	x633
1938J	There and Back Again	2100	x1292
1938I	Symmetric Boundary	2800	x76
1938H	Pho Restaurant	1600	x2165
1938G	Personality Test	2300	x1056
1938F	Forming Groups	2400	x759
1938E	Duplicates	2200	x1017
1938D	Bánh Bò	3300	x91
1938C	Bit Counting Sequence	1900	x1476
1938B	Attraction Score	3000	x199
1938A	Antiparticle Antiphysics	3500	x56
1937B	Binary Path dp, greedy, implementation	1300	x15125
1937A	Shuffle Party implementation, math	800	x23217
1936F	Grand Finale: Circles binary search, geometry	3300	x145
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x125
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x513
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1335
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2952
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7509
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x452
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1377
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x8306
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x8246
1935B	Informatics in MAC constructive algorithms	1200	x18667
1935A	Entertainment in MAC constructive algorithms, strings	800	x28050
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x241
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1395
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3548
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6848
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x19063
1934A	Too Min Too Max greedy, math	800	x25518
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x985
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2511
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x11318
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x20406
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x22749
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x33033
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x38320
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x1093
1932F	Feed Cats data structures, dp, sortings	1900	x4171
1932E	Final Countdown implementation, math, number theory	1600	x8295
1932D	Card Game greedy, implementation	1400	x11546
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x15891
1932B	Chaya Calendar number theory	1100	x20923
1932A	Thorns and Coins dp, greedy, implementation	800	x29811
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2873
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x8153
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x16149
1931D	Divisible Pairs combinatorics, math, number theory	1300	x19234
1931C	Make Equal Again brute force, greedy, math	1000	x29364
1931B	Make Equal greedy	800	x32374
1931A	Recovering a Small String brute force, strings	800	x36412
1930I	Counting Is Fun combinatorics	3500	x74
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x180
1930G	Prefix Max Set Counting data structures, dp, trees	3100	x342
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x720
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1149
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2651
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4155
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x7165
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x15410
1930A	Maximise The Score greedy, sortings	800	x18687
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1816
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1716
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4842
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x15070
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x25406
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x31719
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x244
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1740
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x4319
1928C	Physical Education Lesson brute force, math, number theory	1600	x8661
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x17694
1928A	Rectangle Cutting geometry, math	800	x22761
1927G	Paint Charges data structures, dp, greedy, math	2300	x1703
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x4444
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x14177
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x21840
1927C	Choose the Different Ones! brute force, greedy, math	1000	x28181
1927B	Following the String constructive algorithms, greedy, strings	900	x33465
1927A	Make it White greedy, strings	800	x43854
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3642
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1729
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12065
1926D	Vlad and Division bitmasks, greedy	1300	x15697
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x26962
1926B	Vlad and Shapes geometry, implementation	800	x32675
1926A	Vlad and the Best of Five implementation	800	x48908
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3696
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x20264
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x28990
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x155
1924E	Paper Cutting Again combinatorics, probabilities	3100	x441
1924D	Balanced Subsequences combinatorics, dp, math	2700	x1016
1924C	Fractal Origami geometry, math, matrices	2400	x1179
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2604