Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
3 days
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Problems

#	Name
1434E	A Convex Game dsu, games	3500	x164
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3500	x187
1804G	Flow Control data structures, dsu, implementation	3500	x193
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x946
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x131
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3400	x182
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x233
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x260
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x308
1307F	Cow and Vacation dfs and similar, dsu, trees	3300	x568
1648E	Air Reform data structures, dfs and similar, divide and conquer, dsu, graphs, implementation, trees	3200	x384
650E	Clockwork Bomb data structures, dfs and similar, dsu, greedy, trees	3200	x586
1740G	Dangerous Laser Power constructive algorithms, dsu, sortings	3100	x178
1012E	Cycle sort dsu, math	3100	x271
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x615
571D	Campus binary search, data structures, dsu, trees	3100	x648
1628E	Groceries in Meteor Town binary search, data structures, dsu, trees	3100	x830
896E	Welcome home, Chtholly data structures, dsu	3100	x1969
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x260
1797F	Li Hua and Path data structures, dfs and similar, divide and conquer, dsu, trees	3000	x328
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x405
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x418
1801E	Gasoline prices data structures, divide and conquer, dsu, hashing, trees	3000	x432
696E	...Wait for it... data structures, dsu, trees	3000	x485
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x1157
1468B	Bakery data structures, dsu	2900	x207
1051G	Distinctification data structures, dsu, greedy	2900	x364
763E	Timofey and our friends animals data structures, divide and conquer, dsu	2900	x475
325D	Reclamation dsu	2900	x484
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x557
938G	Shortest Path Queries bitmasks, data structures, dsu, graphs	2900	x860
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x1617
962G	Visible Black Areas data structures, dsu, geometry, trees	2800	x125
1725I	Imitating the Key Tree combinatorics, dsu, trees	2800	x186
217E	Alien DNA data structures, dsu, trees	2800	x290
1578B	Building Forest Trails data structures, dsu	2800	x321
461D	Appleman and Complicated Task dsu, math	2800	x355
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x393
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x423
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x430
1419F	Rain of Fire binary search, data structures, dfs and similar, dsu, graphs, implementation	2800	x474
1303F	Number of Components dsu, implementation	2800	x515
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2800	x752
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1224
471E	MUH and Lots and Lots of Segments data structures, dsu	2700	x80
105D	Entertaining Geodetics brute force, dsu, implementation	2700	x135
81E	Pairs dfs and similar, dp, dsu, graphs, implementation, trees	2700	x327
1814F	Communication Towers brute force, divide and conquer, dsu	2700	x466
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x586
1550F	Jumping Around binary search, data structures, divide and conquer, dp, dsu, graphs, shortest paths	2700	x629
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
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x817
1555F	Good Graph data structures, dsu, graphs, trees	2700	x829
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x926
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x975
715C	Digit Tree dfs and similar, divide and conquer, dsu, trees	2700	x1930
13E	Holes data structures, dsu	2700	x5384
374E	Inna and Babies binary search, data structures, dsu, geometry, implementation	2600	x178
36E	Two Paths constructive algorithms, dsu, graphs, implementation	2600	x496
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	x550
1680F	Lenient Vertex Cover dfs and similar, divide and conquer, dsu, graphs, trees	2600	x630
196E	Opening Portals dsu, graphs, shortest paths	2600	x833
811E	Vladik and Entertaining Flags data structures, dsu, graphs	2600	x841
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x848
1023F	Mobile Phone Network dfs and similar, dsu, graphs, trees	2600	x862
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x902
85E	Guard Towers binary search, dsu, geometry, graphs, sortings	2600	x919
1140F	Extending Set of Points data structures, divide and conquer, dsu	2600	x1121
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x1687
1416D	Graph and Queries data structures, dsu, graphs, implementation, trees	2600	x1873
60D	Savior brute force, dsu, math	2500	x395
212D	Cutting a Fence binary search, data structures, dsu	2500	x451
1423H	Virus data structures, divide and conquer, dsu, graphs	2500	x509
1725K	Kingdom of Criticism data structures, dsu	2500	x580
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2500	x637
884E	Binary Matrix dsu	2500	x669
1758E	Tick, Tock combinatorics, dfs and similar, dsu, graphs	2500	x791
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x795
1876D	Lexichromatography combinatorics, dfs and similar, dsu, graphs, two pointers	2500	x816
1806D	DSU Master combinatorics, dp, dsu, math	2500	x850
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x854
778C	Peterson Polyglot brute force, dfs and similar, dsu, hashing, strings, trees	2500	x864
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x880
1661E	Narrow Components brute force, data structures, dp, dsu, math, trees	2500	x911
1764F	Doremy's Experimental Tree brute force, constructive algorithms, dfs and similar, dsu, sortings, trees	2500	x919
1689E	ANDfinity bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2500	x1150
813F	Bipartite Checking data structures, dsu, graphs	2500	x1219
875F	Royal Questions dsu, graphs, greedy	2500	x1251
1824C	LuoTianyi and XOR-Tree data structures, dfs and similar, dp, dsu, greedy, trees	2500	x1255
1120D	Power Tree dfs and similar, dp, dsu, graphs, greedy, trees	2500	x1265
1687C	Sanae and Giant Robot binary search, brute force, data structures, dsu, greedy, sortings	2500	x1338
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1385
95E	Lucky Country dp, dsu, graphs	2500	x1390
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1424
1444C	Team-Building data structures, dfs and similar, dsu, graphs	2500	x1459
1253F	Cheap Robot binary search, dsu, graphs, shortest paths, trees	2500	x1582
1521D	Nastia Plays with a Tree constructive algorithms, data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2500	x1807
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x2194

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