Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
23:07:32
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Before contest
Codeforces Round 941 (Div. 2)
23:07:32
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Problems

#	Name
925E	May Holidays data structures, trees	2900	x351
923F	Public Service constructive algorithms, graphs, trees	3200	x72
923C	Perfect Security data structures, greedy, strings, trees	1800	x4146
917E	Upside Down data structures, string suffix structures, strings, trees	3400	x121
917D	Stranger Trees dp, math, matrices, trees	2600	x999
916E	Jamie and Tree data structures, trees	2400	x1551
916D	Jamie and To-do List data structures, interactive, trees	2200	x487
915F	Imbalance Value of a Tree data structures, dsu, graphs, trees	2400	x2299
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x226
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1376
913B	Christmas Spruce implementation, trees	1200	x15358
911F	Tree Destruction constructive algorithms, dfs and similar, graphs, greedy, trees	2400	x1554
901A	Hashing Trees constructive algorithms, trees	1500	x5005
894D	Ralph And His Tour in Binary Country brute force, data structures, trees	2200	x1105
893F	Subtree Minimum Query data structures, trees	2300	x1656
891D	Sloth dfs and similar, dp, graph matchings, trees	3100	x169
886C	Petya and Catacombs dsu, greedy, implementation, trees	1300	x5425
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x4231
871E	Restore the Tree graphs, greedy, trees	2900	x146
870E	Points, Lines and Ready-made Titles dfs and similar, dsu, graphs, trees	2300	x974
868E	Policeman and a Tree dp, graphs, trees	2700	x446
864F	Cities Excursions dfs and similar, graphs, trees	2700	x577
862B	Mahmoud and Ehab and the bipartiteness dfs and similar, graphs, trees	1300	x15892
860E	Arkady and a Nobody-men data structures, dfs and similar, trees	2700	x419
859E	Desk Disorder combinatorics, dfs and similar, dsu, graphs, trees	2100	x1640
859D	Third Month Insanity dp, probabilities, trees	2100	x848
856D	Masha and Cactus dp, trees	2400	x367
856B	Similar Words dp, hashing, strings, trees	2300	x475
855G	Harry Vs Voldemort dfs and similar, dp, graphs, trees	3300	x199
855D	Rowena Ravenclaw's Diadem trees	2500	x474
855C	Helga Hufflepuff's Cup dp, trees	2000	x1974
852I	Dating brute force, dfs and similar, graphs, trees	2300	x554
847L	Berland SU Computer Network constructive algorithms, dfs and similar, graphs, hashing, trees	2400	x314
846E	Chemistry in Berland dfs and similar, greedy, trees	2300	x850
843C	Upgrading Tree constructive algorithms, dfs and similar, graphs, math, trees	2600	x346
842E	Nikita and game binary search, dfs and similar, divide and conquer, graphs, trees	2800	x396
842C	Ilya And The Tree dfs and similar, graphs, math, number theory, trees	2000	x3410
840E	In a Trap trees	3200	x432
839C	Journey dfs and similar, dp, graphs, probabilities, trees	1500	x15847
838B	Diverging Directions data structures, dfs and similar, trees	2100	x694
835F	Roads in the Kingdom dfs and similar, dp, graphs, trees	2500	x991
833D	Red-Black Cobweb data structures, divide and conquer, implementation, trees	2800	x371
832D	Misha, Grisha and Underground dfs and similar, graphs, trees	1900	x3596
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x272
830D	Singer House combinatorics, dp, graphs, trees	2800	x796
827D	Best Edge Weight data structures, dfs and similar, graphs, trees	2700	x1056
827B	High Load constructive algorithms, greedy, implementation, trees	1800	x3435
825G	Tree Queries dfs and similar, graphs, trees	2500	x1140
822F	Madness constructive algorithms, dfs and similar, trees	2500	x288
821C	Okabe and Boxes data structures, greedy, trees	1500	x6571
817F	MEX Queries binary search, data structures, trees	2300	x2391
817E	Choosing The Commander bitmasks, data structures, trees	2000	x2682
815C	Karen and Supermarket brute force, dp, trees	2400	x2461
814D	An overnight dance in discotheque dfs and similar, dp, geometry, greedy, trees	2000	x2124
812E	Sagheer and Apple Tree games, trees	2300	x1014
812D	Sagheer and Kindergarten dfs and similar, graphs, implementation, trees	2700	x326
809E	Surprise me! divide and conquer, math, number theory, trees	3100	x714
804D	Expected diameter of a tree binary search, brute force, dfs and similar, dp, sortings, trees	2500	x1256
802L	Send the Fool Further! (hard) dfs and similar, dp, math, trees	2400	x279
802K	Send the Fool Further! (medium) dp, trees	2100	x577
802J	Send the Fool Further! (easy) dfs and similar, graphs, trees	1400	x4265
796D	Police Stations constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees	2100	x5119
796C	Bank Hacking constructive algorithms, data structures, dp, trees	1900	x2964
793E	Problem of offices constructive algorithms, dfs and similar, dp, trees	2900	x241
792D	Paths in a Complete Binary Tree bitmasks, trees	1900	x2897
786E	ALT data structures, flows, graphs, trees	3200	x601
786D	Rap God data structures, dfs and similar, hashing, strings, trees	3400	x136
780C	Andryusha and Colored Balloons dfs and similar, graphs, greedy, trees	1600	x8839
778C	Peterson Polyglot brute force, dfs and similar, dsu, hashing, strings, trees	2500	x851
776F	Sherlock's bet to Moriarty constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation, trees	2800	x412
772E	Verifying Kingdom binary search, divide and conquer, interactive, trees	3200	x122
771C	Bear and Tree Jumps dfs and similar, dp, trees	2100	x2786
767C	Garland dfs and similar, graphs, greedy, trees	2000	x3954
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x2803
765E	Tree Folding dfs and similar, dp, greedy, implementation, trees	2200	x1246
763D	Timofey and a flat tree data structures, graphs, hashing, shortest paths, trees	2900	x514
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x10080
762F	Tree nesting combinatorics, graphs, trees	2800	x345
761E	Dasha and Puzzle constructive algorithms, dfs and similar, graphs, greedy, trees	2000	x1890
758E	Broken Tree dfs and similar, dp, graphs, greedy, trees	2600	x438
757G	Can Bash Save the Day? data structures, divide and conquer, graphs, trees	3400	x478
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x11398
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x479
750F	New Year and Finding Roots constructive algorithms, implementation, interactive, trees	2800	x461
748F	Santa Clauses and a Soccer Championship constructive algorithms, dfs and similar, graphs, trees	2300	x633
746G	New Roads constructive algorithms, graphs, trees	2100	x1307
743D	Chloe and pleasant prizes dfs and similar, dp, graphs, trees	1800	x4245
741D	Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths data structures, dfs and similar, trees	2900	x2436
739B	Alyona and a tree binary search, data structures, dfs and similar, graphs, trees	1900	x4418
735E	Ostap and Tree dp, trees	2500	x842
734E	Anton and Tree dfs and similar, dp, trees	2100	x3732
733F	Drivers Dissatisfaction data structures, dsu, graphs, trees	2200	x1088
724G	Xor-matic Number of the Graph bitmasks, graphs, math, number theory, trees	2600	x992
724F	Uniformly Branched Trees combinatorics, dp, trees	2700	x388
722D	Generating Sets binary search, data structures, dfs and similar, greedy, strings, trees	1900	x3073
718D	Andrew and Chemistry dp, hashing, trees	2900	x382
715C	Digit Tree dfs and similar, divide and conquer, dsu, trees	2700	x1914
708C	Centroids data structures, dfs and similar, dp, graphs, greedy, trees	2300	x2973
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x9236
704E	Iron Man data structures, geometry, trees	3300	x272