Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
830D	Singer House combinatorics, dp, graphs, trees	2800	x828
830C	Bamboo Partition brute force, data structures, implementation, math, number theory, sortings, two pointers	2300	x1201
830B	Cards Sorting data structures, implementation, sortings	1600	x2837
830A	Office Keys binary search, brute force, dp, greedy, sortings	1800	x7011
828B	Black Square implementation	1300	x5692
828A	Restaurant Tables implementation	1200	x7915
827F	Dirty Arkady's Kitchen data structures, dp, graphs, shortest paths	3200	x402
827E	Rusty String fft, math, strings	2700	x964
827D	Best Edge Weight data structures, dfs and similar, graphs, trees	2700	x1162
827C	DNA Evolution data structures, strings	2100	x1641
827B	High Load constructive algorithms, greedy, implementation, trees	1800	x3514
827A	String Reconstruction data structures, greedy, sortings, strings	1700	x4039
825G	Tree Queries dfs and similar, graphs, trees	2500	x1205
825F	String Compression dp, hashing, string suffix structures, strings	2400	x1510
825E	Minimal Labels data structures, dfs and similar, graphs, greedy	2300	x3414
825D	Suitable Replacement binary search, greedy, implementation	1500	x3273
825C	Multi-judge Solving greedy, implementation	1600	x4542
825B	Five-In-a-Row brute force, implementation	1600	x4257
825A	Binary Protocol implementation	1100	x7690
822F	Madness constructive algorithms, dfs and similar, trees	2500	x348
822E	Liar binary search, dp, hashing, string suffix structures	2400	x840
822D	My pretty girl Noora brute force, dp, greedy, math, number theory	1800	x3088
822C	Hacker, pack your bags! binary search, greedy, implementation, sortings	1600	x4589
822B	Crossword solving brute force, implementation, strings	1000	x9519
822A	I'm bored with life implementation, math, number theory	800	x33034
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1494
821D	Okabe and City dfs and similar, graphs, shortest paths	2200	x1400
821C	Okabe and Boxes data structures, greedy, trees	1500	x6832
821B	Okabe and Banana Trees brute force, math	1300	x5760
821A	Okabe and Future Gadget Laboratory implementation	800	x8235
820B	Mister B and Angle in Polygon constructive algorithms, geometry, math	1300	x5204
820A	Mister B and Book Reading implementation	900	x8128
819E	Mister B and Flight to the Moon constructive algorithms, graphs	2800	x513
819D	Mister B and Astronomers number theory	2900	x263
819C	Mister B and Beacons on Field number theory	2900	x211
819B	Mister B and PR Shifts data structures, implementation, math	1900	x1700
819A	Mister B and Boring Game games, greedy	2200	x493
818G	Four Melodies flows, graphs	2600	x739
818F	Level Generation binary search, math, ternary search	2100	x1566
818E	Card Game Again binary search, data structures, number theory, two pointers	1900	x2271
818D	Multicolored Cars data structures, implementation	1700	x3473
818C	Sofa Thief brute force, implementation	2000	x1246
818B	Permutation Game implementation	1600	x3014
818A	Diplomas and Certificates implementation, math	800	x6951
817F	MEX Queries binary search, data structures, trees	2300	x2570
817E	Choosing The Commander bitmasks, data structures, trees	2000	x2901
817D	Imbalanced Array data structures, divide and conquer, dsu, sortings	1900	x4743
817C	Really Big Numbers binary search, brute force, dp, math	1600	x7374
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5720
817A	Treasure Hunt implementation, math, number theory	1200	x6234
816B	Karen and Coffee binary search, data structures, implementation	1400	x17937
816A	Karen and Morning brute force, implementation	1000	x9040
815E	Karen and Neighborhood binary search, constructive algorithms, implementation	2900	x222
815D	Karen and Cards binary search, combinatorics, data structures, geometry	2800	x612
815C	Karen and Supermarket brute force, dp, trees	2400	x2644
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1378
815A	Karen and Game brute force, greedy, implementation	1700	x5642
814E	An unavoidable detour for home combinatorics, dp, graphs, shortest paths	2600	x652
814D	An overnight dance in discotheque dfs and similar, dp, geometry, greedy, trees	2000	x2335
814C	An impassioned circulation of affection brute force, dp, strings, two pointers	1600	x6610
814B	An express train to reveries constructive algorithms	1300	x5627
814A	An abandoned sentiment from past constructive algorithms, greedy, implementation, sortings	900	x10382
813F	Bipartite Checking data structures, dsu, graphs	2500	x1346
813E	Army Creation binary search, data structures	2200	x2404
813D	Two Melodies dp, flows	2600	x1023
813C	The Tag Game dfs and similar, graphs	1700	x5974
813B	The Golden Age brute force, math	1800	x3924
813A	The Contest implementation	1100	x5087
812E	Sagheer and Apple Tree games, trees	2300	x1099
812D	Sagheer and Kindergarten dfs and similar, graphs, implementation, trees	2700	x329
812C	Sagheer and Nubian Market binary search, sortings	1500	x13924
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5187
812A	Sagheer and Crossroads implementation	1200	x6213
811E	Vladik and Entertaining Flags data structures, dsu, graphs	2600	x871
811D	Vladik and Favorite Game constructive algorithms, dfs and similar, graphs, interactive	2100	x1767
811C	Vladik and Memorable Trip dp, implementation	1900	x3250
811B	Vladik and Complicated Book implementation, sortings	1200	x6484
811A	Vladik and Courtesy brute force, implementation	800	x11877
810B	Summer sell-off greedy, sortings	1300	x11432
810A	Straight <<A>> implementation, math	900	x8816
809E	Surprise me! divide and conquer, math, number theory, trees	3100	x733
809D	Hitchhiking in the Baltic States data structures, dp	2900	x837
809C	Find a car combinatorics, divide and conquer, dp	2600	x740
809B	Glad to see you! binary search, interactive	2200	x1661
809A	Do you want a date? implementation, math, sortings	1500	x4693
808G	Anthem of Berland dp, strings	2300	x2703
808F	Card Game binary search, flows, graphs	2400	x1171
808E	Selling Souvenirs binary search, dp, greedy, ternary search	2300	x1843
808D	Array Division binary search, data structures, implementation	1900	x6990
808C	Tea Party constructive algorithms, greedy, sortings	1400	x6167
808B	Average Sleep Time data structures, implementation, math	1300	x7620
808A	Lucky Year implementation	900	x9326
807B	T-Shirt Hunt brute force, implementation	1300	x3547
807A	Is it rated? implementation, sortings	900	x20620
805B	3-palindrome constructive algorithms	1000	x16821
805A	Fake NP greedy, math	1000	x17964
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x164
804E	The same permutation constructive algorithms	3100	x430
804D	Expected diameter of a tree binary search, brute force, dfs and similar, dp, sortings, trees	2500	x1311
804C	Ice cream coloring constructive algorithms, dfs and similar, greedy	2200	x1844