Problemset - Codeforces

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Educational Codeforces Round 167 (Rated for Div. 2)
12:08:23
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Problems

#	Name
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x446
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1156
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2566
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6843
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x411
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1220
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7626
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7474
1935B	Informatics in MAC constructive algorithms	1200	x17231
1935A	Entertainment in MAC constructive algorithms, strings	800	x26432
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x198
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1251
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3209
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6261
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x17447
1934A	Too Min Too Max greedy, math	800	x24183
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x909
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2292
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x10259
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x18657
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x21339
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x30923
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x36506
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x926
1932F	Feed Cats data structures, dp, sortings	1900	x3621
1932E	Final Countdown implementation, math, number theory	1600	x7339
1932D	Card Game greedy, implementation	1400	x10497
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x14502
1932B	Chaya Calendar number theory	1100	x19330
1932A	Thorns and Coins dp, greedy, implementation	800	x27820
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2550
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x7283
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x14110
1931D	Divisible Pairs combinatorics, math, number theory	1300	x16821
1931C	Make Equal Again brute force, greedy, math	1000	x27134
1931B	Make Equal greedy	800	x30839
1931A	Recovering a Small String brute force, strings	800	x34441
1930I	Counting Is Fun combinatorics	3500	x58
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x140
1930G	Prefix Max Set Counting data structures, dp, trees	3100	x315
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x642
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1035
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2450
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3827
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6621
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x14209
1930A	Maximise The Score greedy, sortings	800	x17718
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1676
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1560
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4338
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13775
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x24305
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x29912
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x222
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1598
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3914
1928C	Physical Education Lesson brute force, math, number theory	1600	x7888
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x15991
1928A	Rectangle Cutting geometry, math	800	x21712
1927G	Paint Charges data structures, dp, greedy, math	2300	x1542
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3994
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x12967
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x19217
1927C	Choose the Different Ones! brute force, greedy, math	1000	x26388
1927B	Following the String constructive algorithms, greedy, strings	900	x31291
1927A	Make it White greedy, strings	800	x40895
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3200
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1563
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10783
1926D	Vlad and Division bitmasks, greedy	1300	x14359
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x24396
1926B	Vlad and Shapes geometry, implementation	800	x30796
1926A	Vlad and the Best of Five implementation	800	x44139
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3347
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18828
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x27756
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x138
1924E	Paper Cutting Again combinatorics, probabilities	3100	x407
1924D	Balanced Subsequences combinatorics, dp, math	2700	x804
1924C	Fractal Origami geometry, math, matrices	2400	x1072
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2347
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12850
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x345
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3373
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6187
1923C	Find B constructive algorithms, greedy	1400	x13837
1923B	Monsters Attack! dp, greedy, implementation	1100	x16723
1923A	Moving Chips greedy, implementation	800	x23748
1922F	Replace on Segment dp, graph matchings	2500	x1198
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7264
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5362
1922C	Closest Cities greedy, implementation, math	1300	x17347
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x19558
1922A	Tricky Template constructive algorithms, implementation, strings	800	x26254
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1170
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3581
1921E	Eat the Chip brute force, games, greedy, math	1600	x9181
1921D	Very Different Array data structures, greedy, sortings, two pointers	1100	x20550
1921C	Sending Messages greedy, math	900	x27992
1921B	Arranging Cats greedy, implementation	800	x32583