Problemset - Codeforces

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Codeforces Round 943 (Div. 3)
07:23:16
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Problems

#	Name
1940C	Burenka and Pether *special problem, data structures, dfs and similar, divide and conquer, dsu, graphs, sortings, trees		x32
1940A	Parallel Universes *special problem, constructive algorithms, dfs and similar, dsu, graphs		x78
471E	MUH and Lots and Lots of Segments data structures, dsu	2700	x80
962G	Visible Black Areas data structures, dsu, geometry, trees	2800	x125
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x130
105D	Entertaining Geodetics brute force, dsu, implementation	2700	x135
1434E	A Convex Game dsu, games	3500	x164
1740G	Dangerous Laser Power constructive algorithms, dsu, sortings	3100	x177
374E	Inna and Babies binary search, data structures, dsu, geometry, implementation	2600	x178
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3400	x182
1725I	Imitating the Key Tree combinatorics, dsu, trees	2800	x184
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3500	x187
1804G	Flow Control data structures, dsu, implementation	3500	x193
1468B	Bakery data structures, dsu	2900	x200
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x232
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x241
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x259
45B	School dp, dsu	2200	x266
1012E	Cycle sort dsu, math	3100	x269
217E	Alien DNA data structures, dsu, trees	2800	x290
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x306
46F	Hercule Poirot Problem dsu, graphs	2300	x307
1578B	Building Forest Trails data structures, dsu	2800	x321
81E	Pairs dfs and similar, dp, dsu, graphs, implementation, trees	2700	x325
1797F	Li Hua and Path data structures, dfs and similar, divide and conquer, dsu, trees	3000	x328
461D	Appleman and Complicated Task dsu, math	2800	x355
1051G	Distinctification data structures, dsu, greedy	2900	x363
97E	Leaders dfs and similar, dsu, graphs, trees	2200	x370
1648E	Air Reform data structures, dfs and similar, divide and conquer, dsu, graphs, implementation, trees	3200	x384
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x386
358E	Dima and Kicks brute force, dsu, graphs, implementation	2300	x386
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x394
60D	Savior brute force, dsu, math	2500	x394
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x417
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x420
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x429
1801E	Gasoline prices data structures, divide and conquer, dsu, hashing, trees	3000	x432
212D	Cutting a Fence binary search, data structures, dsu	2500	x451
1814F	Communication Towers brute force, divide and conquer, dsu	2700	x460
1419F	Rain of Fire binary search, data structures, dfs and similar, dsu, graphs, implementation	2800	x474
763E	Timofey and our friends animals data structures, divide and conquer, dsu	2900	x475
696E	...Wait for it... data structures, dsu, trees	3000	x480
325D	Reclamation dsu	2900	x484
1184E3	Daleks' Invasion (hard) data structures, dsu, graphs, trees	2400	x492
36E	Two Paths constructive algorithms, dsu, graphs, implementation	2600	x495
1423H	Virus data structures, divide and conquer, dsu, graphs	2500	x506
1303F	Number of Components dsu, implementation	2800	x510
313E	Ilya and Two Numbers constructive algorithms, data structures, dsu, greedy	2300	x540
1217F	Forced Online Queries Problem data structures, divide and conquer, dsu, graphs, trees	2600	x541
1657F	Words on Tree 2-sat, dfs and similar, dsu, graphs, trees	2600	x544
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x557
1307F	Cow and Vacation dfs and similar, dsu, trees	3300	x566
1725K	Kingdom of Criticism data structures, dsu	2500	x578
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x584
650E	Clockwork Bomb data structures, dfs and similar, dsu, greedy, trees	3200	x586
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x590
1680F	Lenient Vertex Cover dfs and similar, divide and conquer, dsu, graphs, trees	2600	x626
1550F	Jumping Around binary search, data structures, divide and conquer, dp, dsu, graphs, shortest paths	2700	x627
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2500	x634
571D	Campus binary search, data structures, dsu, trees	3100	x647
1765A	Access Levels bitmasks, dsu, flows, graph matchings	2400	x658
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures	2400	x667
884E	Binary Matrix dsu	2500	x668
1166F	Vicky's Delivery Service data structures, dsu, graphs, hashing	2400	x685
195E	Building Forest data structures, dsu, graphs	2000	x686
209C	Trails and Glades constructive algorithms, dsu, graphs, greedy	2400	x690
1567F	One-Four Overload 2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation	2700	x727
444E	DZY Loves Planting binary search, dsu, trees	2700	x743
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2800	x748
1758E	Tick, Tock combinatorics, dfs and similar, dsu, graphs	2500	x775
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x786
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x807
1876D	Lexichromatography combinatorics, dfs and similar, dsu, graphs, two pointers	2500	x808
141E	Clearing Up constructive algorithms, dp, dsu, graphs	2300	x808
1628E	Groceries in Meteor Town binary search, data structures, dsu, trees	3100	x826
1555F	Good Graph data structures, dsu, graphs, trees	2700	x829
196E	Opening Portals dsu, graphs, shortest paths	2600	x829
811E	Vladik and Entertaining Flags data structures, dsu, graphs	2600	x838
1806D	DSU Master combinatorics, dp, dsu, math	2500	x843
87D	Beautiful Road dfs and similar, dp, dsu, graphs, implementation, sortings, trees	2300	x845
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x846
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x851
938G	Shortest Path Queries bitmasks, data structures, dsu, graphs	2900	x858
778C	Peterson Polyglot brute force, dfs and similar, dsu, hashing, strings, trees	2500	x858
1023F	Mobile Phone Network dfs and similar, dsu, graphs, trees	2600	x860
91C	Ski Base combinatorics, dsu, graphs	2300	x861
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x868
1764F	Doremy's Experimental Tree brute force, constructive algorithms, dfs and similar, dsu, sortings, trees	2500	x882
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x892
362D	Fools and Foolproof Roads data structures, dfs and similar, dsu, graphs, greedy	2100	x895
1661E	Narrow Components brute force, data structures, dp, dsu, math, trees	2500	x910
85E	Guard Towers binary search, dsu, geometry, graphs, sortings	2600	x910
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x926
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x939
74C	Chessboard Billiard dfs and similar, dsu, graphs, number theory	2100	x949
1044D	Deduction Queries data structures, dsu	2400	x968
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x971
870E	Points, Lines and Ready-made Titles dfs and similar, dsu, graphs, trees	2300	x974
77C	Beavermuncher-0xFF dfs and similar, dp, dsu, greedy, trees	2100	x977
9E	Interestring graph and Apples dfs and similar, dsu, graphs	2300	x986

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