Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
13:24:56
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dsu

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Problems

#	Name
1039C	Network Safety dfs and similar, dsu, graphs, math, sortings	2200	x1349
1027F	Session in BSU binary search, dfs and similar, dsu, graph matchings, graphs	2400	x1543
1023F	Mobile Phone Network dfs and similar, dsu, graphs, trees	2600	x880
1012E	Cycle sort dsu, math	3100	x309
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x3932
1009F	Dominant Indices data structures, dsu, trees	2300	x5594
990G	GCD Counting divide and conquer, dp, dsu, number theory, trees	2400	x1822
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x2439
982D	Shark brute force, data structures, dsu, trees	1900	x2286
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1808
977E	Cyclic Components dfs and similar, dsu, graphs	1500	x20459
962G	Visible Black Areas data structures, dsu, geometry, trees	2800	x179
959B	Mahmoud and Ehab and the message dsu, greedy, implementation	1200	x9576
939D	Love Rescue dfs and similar, dsu, graphs, greedy, strings	1600	x7291
938G	Shortest Path Queries bitmasks, data structures, dsu, graphs	2900	x900
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3400	x188
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x6673
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x6282
915F	Imbalance Value of a Tree data structures, dsu, graphs, trees	2400	x2450
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x10787
901C	Bipartite Segments binary search, data structures, dfs and similar, dsu, graphs, two pointers	2300	x1168
899E	Segments Removal data structures, dsu, flows, implementation, two pointers	2000	x3020
896E	Welcome home, Chtholly data structures, dsu	3100	x2124
891C	Envy data structures, dsu, graphs	2300	x2358
886C	Petya and Catacombs dsu, greedy, implementation, trees	1300	x5466
884E	Binary Matrix dsu	2500	x683
875F	Royal Questions dsu, graphs, greedy	2500	x1328
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x5180
873F	Forbidden Indices dsu, string suffix structures, strings	2400	x1365
870E	Points, Lines and Ready-made Titles dfs and similar, dsu, graphs, trees	2300	x1225
859E	Desk Disorder combinatorics, dfs and similar, dsu, graphs, trees	2100	x1848
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5618
817D	Imbalanced Array data structures, divide and conquer, dsu, sortings	1900	x4671
813F	Bipartite Checking data structures, dsu, graphs	2500	x1341
811E	Vladik and Entertaining Flags data structures, dsu, graphs	2600	x869
788B	Weird journey combinatorics, constructive algorithms, dfs and similar, dsu, graphs	2100	x2538
778C	Peterson Polyglot brute force, dfs and similar, dsu, hashing, strings, trees	2500	x884
776D	The Door Problem 2-sat, dfs and similar, dsu, graphs	2000	x5042
771A	Bear and Friendship Condition dfs and similar, dsu, graphs	1500	x15209
766D	Mahmoud and a Dictionary data structures, dfs and similar, dp, dsu, graphs	2000	x3374
765D	Artsem and Saunders constructive algorithms, dsu, math	1700	x2467
763E	Timofey and our friends animals data structures, divide and conquer, dsu	2900	x502
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x10509
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x12303
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3500	x192
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x5216
733F	Drivers Dissatisfaction data structures, dsu, graphs, trees	2200	x1109
731C	Socks dfs and similar, dsu, graphs, greedy	1600	x6909
723F	st-Spanning Tree dsu, graphs, greedy, implementation	2300	x1471
723D	Lakes in Berland dfs and similar, dsu, graphs, greedy, implementation	1600	x6939
722C	Destroying Array data structures, dsu	1600	x9289
715C	Digit Tree dfs and similar, divide and conquer, dsu, trees	2700	x2095
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5704
696E	...Wait for it... data structures, dsu, trees	3000	x542
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5496
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x867
679C	Bear and Square Grid dfs and similar, dsu, implementation	2400	x1152
670E	Correct Bracket Sequence Editor data structures, dsu, strings	1700	x3201
659F	Polycarp and Hay dfs and similar, dsu, graphs, greedy, sortings	2000	x1781
659E	New Reform data structures, dfs and similar, dsu, graphs, greedy	1600	x7443
653E	Bear and Forgotten Tree 2 dfs and similar, dsu, graphs, trees	2400	x1483
652E	Pursuit For Artifacts dfs and similar, dsu, graphs, trees	2300	x2114
650E	Clockwork Bomb data structures, dfs and similar, dsu, greedy, trees	3200	x598
650C	Table Compression dfs and similar, dp, dsu, graphs, greedy	2200	x1969
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x237
609E	Minimum spanning tree for each edge data structures, dfs and similar, dsu, graphs, trees	2100	x7694
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x1231
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	1800	x2568
601D	Acyclic Organic Compounds data structures, dfs and similar, dsu, hashing, strings, trees	2400	x1139
600E	Lomsat gelral data structures, dfs and similar, dsu, trees	2300	x13764
571D	Campus binary search, data structures, dsu, trees	3100	x678
566D	Restructuring Company data structures, dsu	1900	x3241
553C	Love Triangles dfs and similar, dsu, graphs	2200	x1776
547B	Mike and Feet binary search, data structures, dp, dsu	1900	x8595
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1306
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7432
506D	Mr. Kitayuta's Colorful Graph brute force, dfs and similar, dsu, graphs	2400	x2122
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x12858
501B	Misha and Changing Handles data structures, dsu, strings	1100	x16076
500E	New Year Domino data structures, dp, dsu	2300	x1425
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x8853
490B	Queue dsu, implementation	1500	x5972
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x5378
471E	MUH and Lots and Lots of Segments data structures, dsu	2700	x81
468B	Two Sets 2-sat, dfs and similar, dsu, graph matchings, greedy	2000	x4138
466E	Information Graph dfs and similar, dsu, graphs, trees	2100	x2214
461D	Appleman and Complicated Task dsu, math	2800	x362
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5707
452E	Three strings data structures, dsu, string suffix structures, strings	2400	x1060
445B	DZY Loves Chemistry dfs and similar, dsu, greedy	1400	x12519
444E	DZY Loves Planting binary search, dsu, trees	2700	x763
441D	Valera and Swaps constructive algorithms, dsu, graphs, implementation, math, string suffix structures	2100	x1102
437D	The Child and Zoo dsu, sortings	1900	x3368
436C	Dungeons and Candies dsu, graphs, greedy, trees	1800	x2623
433D	Nanami's Digital Board dsu, implementation	2000	x1242
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x8878
400D	Dima and Bacteria dsu, graphs, shortest paths	2000	x2896
374E	Inna and Babies binary search, data structures, dsu, geometry, implementation	2600	x184
371D	Vessels data structures, dsu, implementation, trees	1800	x5611
366D	Dima and Trap Graph binary search, data structures, dfs and similar, dsu, shortest paths, two pointers	2000	x1555