Problemset - Codeforces

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Codeforces Round #671 (Div. 2)
08:31:03
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dsu

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Problems

#	Name
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3500	x66
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x218
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x107
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3400	x117
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x107
1307F	Cow and Vacation dfs and similar, dsu, trees	3300	x245
650E	Clockwork Bomb data structures, dfs and similar, dsu, greedy, trees	3200	x333
1012E	Cycle sort dsu, math	3100	x130
571D	Campus binary search, data structures, dsu, trees	3100	x310
896E	Welcome home, Chtholly data structures, dsu	3100	x383
696E	...Wait for it... data structures, dsu, trees	3000	x271
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x375
1051G	Distinctification data structures, dsu, greedy	2900	x120
325D	Reclamation dsu	2900	x273
763E	Timofey and our friends animals data structures, divide and conquer, dsu	2900	x288
938G	Shortest Path Queries bitmasks, data structures, dsu, graphs	2900	x289
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x801
962G	Visible Black Areas data structures, dsu, geometry, trees	2800	x72
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x122
217E	Alien DNA data structures, dsu, trees	2800	x214
461D	Appleman and Complicated Task dsu, math	2800	x256
1303F	Number of Components dsu, implementation	2800	x289
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2800	x332
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x610
471E	MUH and Lots and Lots of Segments data structures, dsu	2700	x56
105D	Entertaining Geodetics brute force, dsu, implementation	2700	x108
81E	Pairs dfs and similar, dp, dsu, graphs, implementation, trees	2700	x188
444E	DZY Loves Planting binary search, dsu, trees	2700	x409
715C	Digit Tree dfs and similar, divide and conquer, dsu, trees	2700	x1027
13E	Holes data structures, dsu	2700	x2074
374E	Inna and Babies binary search, data structures, dsu, geometry, implementation	2600	x149
1217F	Forced Online Queries Problem data structures, divide and conquer, dsu, graphs, trees	2600	x248
36E	Two Paths constructive algorithms, dsu, graphs, implementation	2600	x256
1140F	Extending Set of Points data structures, divide and conquer, dsu	2600	x393
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x434
196E	Opening Portals dsu, graphs, shortest paths	2600	x453
811E	Vladik and Entertaining Flags data structures, dsu, graphs	2600	x474
85E	Guard Towers binary search, dsu, geometry, graphs, sortings	2600	x509
1023F	Mobile Phone Network dfs and similar, dsu, graphs, trees	2600	x534
60D	Savior brute force, dsu, math	2500	x238
212D	Cutting a Fence binary search, data structures, dsu	2500	x307
813F	Bipartite Checking data structures, dsu, graphs	2500	x377
884E	Binary Matrix dsu	2500	x384
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2500	x437
1120D	Power Tree dfs and similar, dp, dsu, graphs, greedy, trees	2500	x459
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x589
778C	Peterson Polyglot brute force, dfs and similar, dsu, hashing, strings, trees	2500	x627
1253F	Cheap Robot binary search, dsu, graphs, shortest paths, trees	2500	x674
875F	Royal Questions dsu, graphs, greedy	2500	x718
95E	Lucky Country dp, dsu, graphs	2500	x733
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x844
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x1347
1184E3	Daleks' Invasion (hard) data structures, dsu, graphs, trees	2400	x298
1166F	Vicky's Delivery Service data structures, dsu, graphs, hashing	2400	x398
209C	Trails and Glades constructive algorithms, dsu, graphs, greedy	2400	x441
1044D	Deduction Queries data structures, dsu	2400	x573
452E	Three strings data structures, dsu, string suffix structures, strings	2400	x573
873F	Forbidden Indices dsu, string suffix structures, strings	2400	x592
1107G	Vasya and Maximum Profit binary search, constructive algorithms, data structures, dp, dsu	2400	x636
601D	Acyclic Organic Compounds data structures, dfs and similar, dsu, hashing, strings, trees	2400	x761
1027F	Session in BSU binary search, dfs and similar, dsu, graph matchings, graphs	2400	x805
1042F	Leaf Sets data structures, dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x837
990G	GCD Counting divide and conquer, dp, dsu, number theory, trees	2400	x842
653E	Bear and Forgotten Tree 2 dfs and similar, dsu, graphs, trees	2400	x929
1290C	Prefix Enlightenment dfs and similar, dsu, graphs	2400	x949
679C	Bear and Square Grid dfs and similar, dsu, implementation	2400	x955
915F	Imbalance Value of a Tree data structures, dsu, graphs, trees	2400	x1048
506D	Mr. Kitayuta's Colorful Graph brute force, dfs and similar, dsu, graphs	2400	x1196
46F	Hercule Poirot Problem dsu, graphs	2300	x241
358E	Dima and Kicks brute force, dsu, graphs, implementation	2300	x320
313E	Ilya and Two Numbers constructive algorithms, data structures, dsu, greedy	2300	x407
141E	Clearing Up constructive algorithms, dp, dsu, graphs	2300	x491
9E	Interestring graph and Apples dfs and similar, dsu, graphs	2300	x498
87D	Beautiful Road dfs and similar, dp, dsu, graphs, implementation, sortings, trees	2300	x580
91C	Ski Base combinatorics, dsu, graphs	2300	x654
870E	Points, Lines and Ready-made Titles dfs and similar, dsu, graphs, trees	2300	x715
1385G	Columns Swaps 2-sat, dfs and similar, dsu, graphs, implementation	2300	x745
901C	Bipartite Segments binary search, data structures, dfs and similar, dsu, graphs, two pointers	2300	x815
652E	Pursuit For Artifacts dfs and similar, dsu, graphs, trees	2300	x927
500E	New Year Domino data structures, dp, dsu	2300	x1035
891C	Envy data structures, dsu, graphs	2300	x1082
723F	st-Spanning Tree dsu, graphs, greedy, implementation	2300	x1092
1380E	Merging Towers data structures, dsu, implementation, trees	2300	x1157
160D	Edges in MST dfs and similar, dsu, graphs, sortings	2300	x1234
1009F	Dominant Indices data structures, dsu, trees	2300	x1689
600E	Lomsat gelral data structures, dfs and similar, dsu, trees	2300	x4339
45B	School dp, dsu	2200	x169
97E	Leaders dfs and similar, dsu, graphs, trees	2200	x190
76A	Gift dsu, graphs, sortings, trees	2200	x689
733F	Drivers Dissatisfaction data structures, dsu, graphs, trees	2200	x780
1039C	Network Safety dfs and similar, dsu, graphs, math, sortings	2200	x977
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1065
553C	Love Triangles dfs and similar, dsu, graphs	2200	x1376
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x1413
1156E	Special Segments of Permutation data structures, divide and conquer, dsu, two pointers	2200	x1462
27D	Ring Road 2 2-sat, dfs and similar, dsu, graphs	2200	x1465
650C	Table Compression dfs and similar, dp, dsu, graphs, greedy	2200	x1485
1220E	Tourism dfs and similar, dp, dsu, graphs, greedy, trees	2200	x1621
1156D	0-1-Tree dfs and similar, divide and conquer, dp, dsu, trees	2200	x1925
74C	Chessboard Billiard dfs and similar, dsu, graphs, number theory	2100	x675

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