Problemset - Codeforces

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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		x80
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	x131
105D	Entertaining Geodetics brute force, dsu, implementation	2700	x135
1434E	A Convex Game dsu, games	3500	x164
374E	Inna and Babies binary search, data structures, dsu, geometry, implementation	2600	x178
1740G	Dangerous Laser Power constructive algorithms, dsu, sortings	3100	x179
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	x187
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	x207
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x233
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x260
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x266
45B	School dp, dsu	2200	x267
1012E	Cycle sort dsu, math	3100	x271
217E	Alien DNA data structures, dsu, trees	2800	x291
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x309
46F	Hercule Poirot Problem dsu, graphs	2300	x309
1578B	Building Forest Trails data structures, dsu	2800	x321
81E	Pairs dfs and similar, dp, dsu, graphs, implementation, trees	2700	x327
1797F	Li Hua and Path data structures, dfs and similar, divide and conquer, dsu, trees	3000	x329
461D	Appleman and Complicated Task dsu, math	2800	x356
97E	Leaders dfs and similar, dsu, graphs, trees	2200	x370
1051G	Distinctification data structures, dsu, greedy	2900	x375
1648E	Air Reform data structures, dfs and similar, divide and conquer, dsu, graphs, implementation, trees	3200	x384
358E	Dima and Kicks brute force, dsu, graphs, implementation	2300	x386
60D	Savior brute force, dsu, math	2500	x396
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x398
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x407
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x419
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x425
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x430
1801E	Gasoline prices data structures, divide and conquer, dsu, hashing, trees	3000	x433
212D	Cutting a Fence binary search, data structures, dsu	2500	x451
1814F	Communication Towers brute force, divide and conquer, dsu	2700	x467
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
325D	Reclamation dsu	2900	x484
696E	...Wait for it... data structures, dsu, trees	3000	x486
1184E3	Daleks' Invasion (hard) data structures, dsu, graphs, trees	2400	x494
36E	Two Paths constructive algorithms, dsu, graphs, implementation	2600	x496
1423H	Virus data structures, divide and conquer, dsu, graphs	2500	x509
1303F	Number of Components dsu, implementation	2800	x515
1217F	Forced Online Queries Problem data structures, divide and conquer, dsu, graphs, trees	2600	x541
313E	Ilya and Two Numbers constructive algorithms, data structures, dsu, greedy	2300	x541
1657F	Words on Tree 2-sat, dfs and similar, dsu, graphs, trees	2600	x554
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x557
1307F	Cow and Vacation dfs and similar, dsu, trees	3300	x568
1725K	Kingdom of Criticism data structures, dsu	2500	x580
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x586
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	x619
1680F	Lenient Vertex Cover dfs and similar, divide and conquer, dsu, graphs, trees	2600	x630
1550F	Jumping Around binary search, data structures, divide and conquer, dp, dsu, graphs, shortest paths	2700	x630
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2500	x639
571D	Campus binary search, data structures, dsu, trees	3100	x649
1765A	Access Levels bitmasks, dsu, flows, graph matchings	2400	x667
884E	Binary Matrix dsu	2500	x669
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures	2400	x672
1166F	Vicky's Delivery Service data structures, dsu, graphs, hashing	2400	x686
195E	Building Forest data structures, dsu, graphs	2000	x688
209C	Trails and Glades constructive algorithms, dsu, graphs, greedy	2400	x692
1567F	One-Four Overload 2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation	2700	x728
444E	DZY Loves Planting binary search, dsu, trees	2700	x745
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2800	x752
1758E	Tick, Tock combinatorics, dfs and similar, dsu, graphs	2500	x792
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x796
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x820
1876D	Lexichromatography combinatorics, dfs and similar, dsu, graphs, two pointers	2500	x820
1628E	Groceries in Meteor Town binary search, data structures, dsu, trees	3100	x830
1555F	Good Graph data structures, dsu, graphs, trees	2700	x830
196E	Opening Portals dsu, graphs, shortest paths	2600	x833
811E	Vladik and Entertaining Flags data structures, dsu, graphs	2600	x843
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x848
87D	Beautiful Road dfs and similar, dp, dsu, graphs, implementation, sortings, trees	2300	x848
1806D	DSU Master combinatorics, dp, dsu, math	2500	x851
141E	Clearing Up constructive algorithms, dp, dsu, graphs	2300	x853
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x854
938G	Shortest Path Queries bitmasks, data structures, dsu, graphs	2900	x861
91C	Ski Base combinatorics, dsu, graphs	2300	x863
1023F	Mobile Phone Network dfs and similar, dsu, graphs, trees	2600	x864
778C	Peterson Polyglot brute force, dfs and similar, dsu, hashing, strings, trees	2500	x865
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x884
362D	Fools and Foolproof Roads data structures, dfs and similar, dsu, graphs, greedy	2100	x896
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x903
1661E	Narrow Components brute force, data structures, dp, dsu, math, trees	2500	x911
85E	Guard Towers binary search, dsu, geometry, graphs, sortings	2600	x920
1764F	Doremy's Experimental Tree brute force, constructive algorithms, dfs and similar, dsu, sortings, trees	2500	x924
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x927
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x946
74C	Chessboard Billiard dfs and similar, dsu, graphs, number theory	2100	x949
1044D	Deduction Queries data structures, dsu	2400	x971
870E	Points, Lines and Ready-made Titles dfs and similar, dsu, graphs, trees	2300	x975
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x976
77C	Beavermuncher-0xFF dfs and similar, dp, dsu, greedy, trees	2100	x977
9E	Interestring graph and Apples dfs and similar, dsu, graphs	2300	x989

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