Problemset - Codeforces

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Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
01:35:48
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Problems

#	Name
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x234
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1378
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3473
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6722
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x18689
1934A	Too Min Too Max greedy, math	800	x25206
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x969
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2468
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x11108
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x20055
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x22459
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x32670
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x37880
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x1062
1932F	Feed Cats data structures, dp, sortings	1900	x4064
1932E	Final Countdown implementation, math, number theory	1600	x8085
1932D	Card Game greedy, implementation	1400	x11336
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x15582
1932B	Chaya Calendar number theory	1100	x20563
1932A	Thorns and Coins dp, greedy, implementation	800	x29311
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2786
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x7949
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x15663
1931D	Divisible Pairs combinatorics, math, number theory	1300	x18658
1931C	Make Equal Again brute force, greedy, math	1000	x28850
1931B	Make Equal greedy	800	x31983
1931A	Recovering a Small String brute force, strings	800	x35938
1930I	Counting Is Fun combinatorics	3500	x70
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x152
1930G	Prefix Max Set Counting data structures, dp, trees	3100	x335
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x705
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1123
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2610
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4082
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x7004
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x15122
1930A	Maximise The Score greedy, sortings	800	x18446
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1784
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1670
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4735
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x14720
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x25119
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x31251
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x238
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1695
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x4221
1928C	Physical Education Lesson brute force, math, number theory	1600	x8467
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x17244
1928A	Rectangle Cutting geometry, math	800	x22456
1927G	Paint Charges data structures, dp, greedy, math	2300	x1654
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x4314
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x13886
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x21232
1927C	Choose the Different Ones! brute force, greedy, math	1000	x27735
1927B	Following the String constructive algorithms, greedy, strings	900	x32898
1927A	Make it White greedy, strings	800	x42735
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3508
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1691
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x11783
1926D	Vlad and Division bitmasks, greedy	1300	x15391
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x26387
1926B	Vlad and Shapes geometry, implementation	800	x32228
1926A	Vlad and the Best of Five implementation	800	x47399
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3617
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x19907
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x28582
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x151
1924E	Paper Cutting Again combinatorics, probabilities	3100	x435
1924D	Balanced Subsequences combinatorics, dp, math	2700	x1003
1924C	Fractal Origami geometry, math, matrices	2400	x1156
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2533
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x13848
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x375
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3794
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6713
1923C	Find B constructive algorithms, greedy	1400	x14953
1923B	Monsters Attack! dp, greedy, implementation	1100	x17591
1923A	Moving Chips greedy, implementation	800	x24562
1922F	Replace on Segment dp, graph matchings	2500	x1393
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7656
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5656
1922C	Closest Cities greedy, implementation, math	1300	x18381
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x20523
1922A	Tricky Template constructive algorithms, implementation, strings	800	x26891
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1235
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3824
1921E	Eat the Chip brute force, games, greedy, math	1600	x9739
1921D	Very Different Array data structures, greedy, sortings, two pointers	1100	x21497
1921C	Sending Messages greedy, math	900	x29171
1921B	Arranging Cats greedy, implementation	800	x33557
1921A	Square greedy, math	800	x42749
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x468
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x959
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2683
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5569
1920C	Partitioning the Array brute force, math, number theory	1600	x13457
1920B	Summation Game games, greedy, math, sortings	1100	x20700
1920A	Satisfying Constraints brute force, greedy, math	800	x27624
1919H	Tree Diameter interactive, trees	2000	x142
1919G	Tree LGM constructive algorithms, divide and conquer, games, trees	3500	x179