Problemset - Codeforces

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Codeforces Round (Div. 3)
7 days

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Problems

#	Name
865E	Hex Dyslexia bitmasks, brute force, dp, graphs	3300	x120
865C	Gotta Go Fast binary search, dp	2400	x814
856D	Masha and Cactus dp, trees	2400	x374
856C	Eleventh Birthday combinatorics, dp, math	2400	x537
856B	Similar Words dp, hashing, strings, trees	2300	x481
855G	Harry Vs Voldemort dfs and similar, dp, graphs, trees	3300	x205
855E	Salazar Slytherin's Locket bitmasks, dp	2200	x1666
853D	Michael and Charging Stations binary search, dp, greedy	2400	x655
852H	Bob and stages dp, geometry	3000	x150
850D	Tournament Construction constructive algorithms, dp, graphs, greedy, math	2800	x374
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1385
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x202
848D	Shake It! combinatorics, dp, flows, graphs	2900	x373
845F	Guards In The Storehouse bitmasks, dp	2500	x424
840C	On the Bench combinatorics, dp	2500	x1663
839D	Winter is here combinatorics, dp, math, number theory	2200	x2702
838E	Convex Countour dp	2300	x326
838C	Future Failure dp, games	2800	x283
835F	Roads in the Kingdom dfs and similar, dp, graphs, trees	2500	x1017
833E	Caramel Clouds data structures, dp, sortings	3400	x216
833B	The Bakery binary search, data structures, divide and conquer, dp, two pointers	2200	x4617
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x273
830D	Singer House combinatorics, dp, graphs, trees	2800	x812
827F	Dirty Arkady's Kitchen data structures, dp, graphs, shortest paths	3200	x388
825F	String Compression dp, hashing, string suffix structures, strings	2400	x1352
822E	Liar binary search, dp, hashing, string suffix structures	2400	x772
815C	Karen and Supermarket brute force, dp, trees	2400	x2487
814E	An unavoidable detour for home combinatorics, dp, graphs, shortest paths	2600	x641
813D	Two Melodies dp, flows	2600	x974
809D	Hitchhiking in the Baltic States data structures, dp	2900	x776
809C	Find a car combinatorics, divide and conquer, dp	2600	x734
808G	Anthem of Berland dp, strings	2300	x2468
808E	Selling Souvenirs binary search, dp, greedy, ternary search	2300	x1763
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x141
804D	Expected diameter of a tree binary search, brute force, dfs and similar, dp, sortings, trees	2500	x1260
802L	Send the Fool Further! (hard) dfs and similar, dp, math, trees	2400	x286
797F	Mice and Holes data structures, dp, greedy, sortings	2600	x1102
796E	Exam Cheating binary search, dp	2400	x639
794G	Replace All combinatorics, dp, math	3400	x324
793F	Julia the snail data structures, divide and conquer, dp	3000	x523
793E	Problem of offices constructive algorithms, dfs and similar, dp, trees	2900	x245
785D	Anton and School - 2 combinatorics, dp, math, number theory	2300	x2662
780G	Andryusha and Nervous Barriers data structures, dp	2700	x650
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1027
778E	Selling Numbers dp, sortings	3000	x303
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x334
774I	Composing Of String *special problem, dp	2300	x101
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x185
773D	Perishable Roads dp, graphs, shortest paths	2700	x576
772D	Varying Kibibits bitmasks, dp	2700	x574
772C	Vulnerable Kerbals constructive algorithms, dp, graphs, math, number theory	2300	x1191
771E	Bear and Rectangle Strips dp, greedy	3000	x444
771D	Bear and Company dp	2500	x1108
768D	Jon and Orbs dp, math, probabilities	2200	x2793
765G	Math, math everywhere brute force, dp, math, meet-in-the-middle, number theory	3200	x82
765E	Tree Folding dfs and similar, dp, greedy, implementation, trees	2200	x1251
762D	Maximum path dp, greedy, implementation	2300	x1300
761F	Dasha and Photos brute force, data structures, dp, implementation	2600	x408
758E	Broken Tree dfs and similar, dp, graphs, greedy, trees	2600	x445
757E	Bash Plays with Functions brute force, combinatorics, dp, number theory	2500	x1272
757D	Felicity's Big Secret Revealed bitmasks, dp	2200	x1277
756E	Byteland coins combinatorics, dp, math	3200	x154
756D	Bacterial Melee brute force, combinatorics, dp, string suffix structures	2400	x983
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x874
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1284
754C	Vladik and chat brute force, constructive algorithms, dp, implementation, strings	2200	x915
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x443
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1471
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x413
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1015
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1483
739E	Gosha is hunting brute force, data structures, dp, flows, math, probabilities, sortings	3000	x2077
735E	Ostap and Tree dp, trees	2500	x853
731E	Funny Game dp, games	2200	x1447
729F	Financiers Game dp	2500	x938
727F	Polycarp's problems binary search, dp, greedy	2300	x770
724F	Uniformly Branched Trees combinatorics, dp, trees	2700	x392
724E	Goods transportation dp, flows, greedy	2900	x1254
722E	Research Rover combinatorics, dp	2900	x804
721E	Road to Home binary search, dp	2700	x303
720D	Slalom data structures, dp, sortings	3100	x225
718D	Andrew and Chemistry dp, hashing, trees	2900	x392
717B	R3D3’s Summer Adventure dp, greedy	2700	x139
713E	Sonya Partymaker binary search, dp	3300	x348
713C	Sonya and Problem Wihtout a Legend dp, sortings	2300	x4992
712D	Memory and Scores combinatorics, dp, math	2200	x1668
708E	Student's Camp dp, math	3100	x941
708C	Centroids data structures, dfs and similar, dp, graphs, greedy, trees	2300	x3055
704C	Black Widow dp, graphs, implementation, math	2900	x458
704B	Ant Man dp, graphs, greedy	2500	x1571
703E	Mishka and Divisors dp, number theory	2600	x590
698C	LRU bitmasks, dp, math, probabilities	2400	x1284
696D	Legen... data structures, dp, matrices, strings	2500	x1239
691F	Couple Cover brute force, dp, number theory	2200	x1254
679B	Bear and Tower of Cubes binary search, dp, greedy	2200	x2118
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x1976
677E	Vanya and Balloons binary search, brute force, dp, implementation	2300	x586
677D	Vanya and Treasure data structures, dp, graphs, shortest paths	2300	x1534
675E	Trains and Statistic data structures, dp, greedy	2300	x2630
671D	Roads in Yusland data structures, dp, greedy	2900	x1113