Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
2225C	Red-Black Pairs dp, greedy	1100	x14843
2225B	Alternating String brute force, greedy	900	x18175
2225A	A Number Between Two Others greedy, math	800	x22621
2224B	Zhily and Mex and Max constructive algorithms, greedy, math, sortings	1200	x9927
2224A	Zhily and Array Operating constructive algorithms, greedy	800	x12530
2223F	Zhily and Colorful Strings divide and conquer, fft, math	3500	x126
2223E	Zhily and Permutation data structures, divide and conquer, trees	3500	x85
2223D	Zhily and Cycle graphs, greedy	2800	x400
2223C	Zhily and Signpost chinese remainder theorem, dfs and similar, math, number theory, trees	2300	x1013
2223B	Zhily and Barknights binary search, data structures, dp, math, sortings, two pointers	1600	x4128
2223A	Zhily and Bracket Swapping constructive algorithms, greedy	1300	x8581
2222H	Counting Sort? brute force, combinatorics, dp	3500	x165
2222G	Statistics on Tree binary search, brute force, dfs and similar, dfs and similar, divide and conquer, graphs, trees, trees	3100	x240
2222F	Building Tree data structures, divide and conquer, dsu, graphs, graphs, implementation	2600	x773
2222E	Seek the Truth binary search, bitmasks, constructive algorithms, interactive	2000	x2521
2222D	Permutation Construction constructive algorithms, data structures, sortings	1800	x4356
2222C	Median Partition dp, math	1500	x6636
2222B	Artistic Balance Tree greedy, sortings	1100	x9461
2222A	A Wonderful Contest brute force, dp, math	800	x12867
2220B	OIE Excursion greedy	1200	x15490
2220A	Blocked greedy, sortings	800	x21959
2219E	Weird Chessboard constructive algorithms, math	3500	x173
2219D	MEX Replacement on Tree data structures, implementation, math, trees	2700	x578
2219C	Coloring a Red Black Tree dfs and similar, dp, greedy, math, probabilities, trees, trees	2300	x1556
2219B2	Unique Values (Hard version) binary search, bitmasks, constructive algorithms, interactive	2000	x4006
2219B1	Unique Values (Easy version) binary search, constructive algorithms, divide and conquer, interactive, math	1900	x4446
2219A	Grid L brute force, constructive algorithms, math, number theory	1400	x11401
2218G	The 67th Iteration of "Counting is Fun" implementation, math	1800	x4913
2218F	The 67th Tree Problem constructive algorithms, implementation, trees	1500	x9726
2218E	The 67th XOR Problem binary search, bitmasks, brute force	1200	x18464
2218D	The 67th OEIS Problem constructive algorithms, greedy, greedy, greedy, math, math, number theory	1100	x22941
2218C	The 67th Permutation Problem constructive algorithms, greedy, math	800	x32675
2218B	The 67th 6-7 Integer Problem greedy, math	800	x43292
2218A	The 67th Integer Problem brute force, games, implementation, math	800	x45888
2217H	Closer dfs and similar, dp, trees	2800	x304
2217G	Down the Pivot combinatorics, dp, math, trees	2600	x477
2217F	Interval Game bitmasks, combinatorics, constructive algorithms, dp, games, games, greedy, greedy, math, probabilities	2400	x969
2217E	Definitely Larger binary search, constructive algorithms, data structures, graphs, greedy, sortings	2100	x2592
2217D	Flip the Bit (Hard Version) greedy, implementation, math	1900	x3960
2217C	Grid Covering chinese remainder theorem, math, number theory	1300	x12434
2217B	Flip the Bit (Easy Version) greedy, implementation	1000	x19116
2217A	The Equalizer math	800	x25797
2216B	THU Packing Puzzle greedy	1300	x5783
2216A	Course Wishes greedy	900	x6677
2215G	Maze trees	3500	x103
2215F	Research games	3500	x115
2215E	Star Map constructive algorithms, data structures, geometry, greedy, sortings	2700	x244
2215D	EXPloration, EXPloitation, and Gain Some EXPerience! bitmasks, brute force, dp, greedy, implementation	2800	x186
2215C	Oriented Journey bitmasks, brute force, communication, constructive algorithms, graphs, interactive, trees	2200	x939
2215B	RReeppeettiittiioonn binary search, brute force, implementation, math, number theory	2000	x1399
2215A	Interval Mod constructive algorithms, dp, greedy, math	1700	x4157
2214J	Special Problem *special problem, brute force, games, interactive		x3744
2214I	You Are a Robot special problem, special problem		x335
2214H	Double Vision *special problem		x1825
2214G	Anomaly *special problem, communication		x825
2214F	Numbers *special problem		x1117
2214E	Shortest Paths *special problem, shortest paths		x1136
2214D	Neural Feud *special problem, strings		x4508
2214C	And? *special problem, bitmasks		x2012
2214B	Are You Smiling? special problem, special problem, *special problem, strings		x7015
2214A	Odd One Out *special problem, graph matchings, implementation		x10834
2211H	Median Deletion	3500	x133
2211G	Rational Bubble Sort constructive algorithms, geometry, greedy	3100	x387
2211F	Learning Binary Search combinatorics, divide and conquer, dp, math	2400	x1082
2211E	Minimum Path Cover brute force, dp, greedy, interactive, interactive, math, number theory, trees	2500	x1098
2211D	AND-array bitmasks, combinatorics, math	1900	x3508
2211C2	Equal Multisets (Hard Version) constructive algorithms, dsu, greedy	1800	x4419
2211C1	Equal Multisets (Easy Version) binary search, brute force, greedy, two pointers	1300	x10958
2211B	Mickey Mouse Constructive constructive algorithms, dp, greedy, math	1100	x13435
2211A	Antimedian Deletion implementation, math	800	x18224
2210F	A Simple Problem binary search, data structures, greedy, math, trees	2800	x290
2210E	Binary Strings are Simple? constructive algorithms, implementation, interactive, number theory	2700	x399
2210D	A Simple RBS Problem constructive algorithms, math, strings, trees	2100	x2357
2210C2	A Simple GCD Problem (Hard Version) dp, greedy, number theory	2100	x2485
2210C1	A Simple GCD Problem (Easy Version) greedy, number theory	1200	x15213
2210B	Simply Sitting on Chairs data structures, greedy	900	x20263
2210A	A Simple Sequence constructive algorithms, dp, greedy, number theory	800	x25384
2209F	Dynamic Values And Maximum Sum data structures, data structures, greedy, implementation, trees	2700	x487
2209E	A Trivial String Problem brute force, dp, hashing, string suffix structures, strings	2200	x2109
2209D	Ghostfires constructive algorithms, greedy	1800	x6142
2209C	Find the Zero constructive algorithms, interactive	1400	x12314
2209B	Array greedy	900	x22360
2209A	Flip Flops greedy	800	x24018
2208E	Counting Cute Arrays combinatorics, dp	2700	x505
2208D2	Tree Orientation (Hard Version) dfs and similar, dsu, graphs, greedy, sortings, trees	2200	x2203
2208D1	Tree Orientation (Easy Version) constructive algorithms, dfs and similar, dsu, graphs, greedy, matrices, trees	1800	x5049
2208C	Stamina and Tasks dp, greedy, math	1300	x13237
2208B	Cyclists brute force, games, greedy, implementation, math, sortings	1100	x15597
2208A	Bingo Candies constructive algorithms, math	800	x22587
2207H3	Bowser's Castle (Hard Version) constructive algorithms, divide and conquer, interactive, trees, two pointers	3500	x89
2207H2	Bowser's Castle (Medium Version) constructive algorithms, divide and conquer, interactive, trees, two pointers	3500	x83
2207H1	Bowser's Castle (Easy Version) binary search, constructive algorithms, divide and conquer, greedy, interactive, trees	3500	x83
2207G	Toothless constructive algorithms, dfs and similar, dsu	3300	x241
2207F	Hanabi binary search, data structures, dp, dsu, flows, graph matchings, graphs, greedy	3000	x343
2207E2	N-MEX (Counting Version) combinatorics, constructive algorithms, math	2400	x1028
2207E1	N-MEX (Constructive Version) constructive algorithms, greedy	2200	x1904
2207D	Boxed Like a Fish dfs and similar, dp, games, shortest paths, trees	2200	x2407
2207C	Where's My Water? data structures, divide and conquer, dp, math	1600	x6734
2207B	One Night At Freddy's games, greedy, sortings	1600	x6885
2207A	1-1 greedy, strings	800	x15422

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