Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
2 days
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Problems

#	Name
9B	Running Student brute force, geometry, implementation	1200	x5178
424C	Magic Formulas math	1600	x5177
949A	Zebras greedy	1600	x5176
1133E	K Balanced Teams dp, sortings, two pointers	1800	x5170
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5165
620E	New Year Tree bitmasks, data structures, trees	2100	x5164
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x5158
1415D	XOR-gun bitmasks, brute force, constructive algorithms	2000	x5156
1031C	Cram Time greedy	1600	x5156
252A	Little Xor brute force, implementation	1100	x5155
87A	Trains implementation, math	1500	x5155
540D	Bad Luck Island dp, probabilities	1900	x5153
1280A	Cut and Paste implementation, math	1700	x5150
90B	African Crossword implementation, strings	1100	x5144
1147A	Hide and Seek graphs	1500	x5137
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x5136
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5135
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5130
1776L	Controllers binary search, math	1500	x5130
898C	Phone Numbers implementation, strings	1400	x5126
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5125
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1800	x5124
1367E	Necklace Assembly brute force, dfs and similar, dp, graphs, greedy, number theory	1900	x5121
245B	Internet Address implementation, strings	1100	x5118
796D	Police Stations constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees	2100	x5117
1210A	Anadi and Domino brute force, graphs	1700	x5116
141B	Hopscotch geometry, math	1400	x5116
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5115
195B	After Training data structures, implementation, math	1300	x5115
981C	Useful Decomposition implementation, trees	1400	x5113
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x5113
299B	Ksusha the Squirrel brute force, implementation	900	x5113
586B	Laurenty and Shop implementation	1300	x5111
578B	"Or" Game brute force, greedy	1700	x5110
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5103
378B	Semifinals implementation, sortings	1300	x5096
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x5095
725B	Food on the Plane implementation, math	1200	x5088
1426F	Number of Subsequences combinatorics, dp, strings	2000	x5087
1197D	Yet Another Subarray Problem dp, greedy, math	1900	x5085
261A	Maxim and Discounts greedy, sortings	1400	x5085
1702G1	Passable Paths (easy version) dfs and similar, trees	1900	x5082
820B	Mister B and Angle in Polygon constructive algorithms, geometry, math	1300	x5079
1184B1	The Doctor Meets Vader (Easy) binary search, sortings	1400	x5074
1009F	Dominant Indices data structures, dsu, trees	2300	x5072
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5068
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5065
1010B	Rocket binary search, interactive	1800	x5063
23A	You're Given a String... brute force, greedy	1200	x5060
1475F	Unusual Matrix 2-sat, brute force, constructive algorithms	1900	x5059
1299B	Aerodynamic geometry	1800	x5054
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5048
924B	Three-level Laser binary search, greedy, two pointers	1600	x5042
914D	Bash and a Tough Math Puzzle data structures, number theory	1900	x5024
848A	From Y to Y constructive algorithms	1600	x5020
144B	Meeting implementation	1300	x5019
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5016
938D	Buy a Ticket data structures, graphs, shortest paths	2000	x5016
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5015
630K	Indivisibility math, number theory	1500	x5014
1148C	Crazy Diamond constructive algorithms, sortings	1700	x5013
813A	The Contest implementation	1100	x5007
901A	Hashing Trees constructive algorithms, trees	1500	x5005
204B	Little Elephant and Cards binary search, data structures	1500	x4999
568A	Primes or Palindromes? brute force, implementation, math, number theory	1600	x4998
1400E	Clear the Multiset data structures, divide and conquer, dp, greedy	2200	x4996
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x4990
404C	Restore Graph dfs and similar, graphs, sortings	1800	x4990
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x4987
1254A	Feeding Chicken constructive algorithms, greedy, implementation	1700	x4984
710C	Magic Odd Square constructive algorithms, math	1500	x4980
1613E	Crazy Robot dfs and similar, graphs	2000	x4977
1718A2	Burenka and Traditions (hard version) data structures, dp, greedy	1900	x4974
746D	Green and Black Tea constructive algorithms, greedy, math	1500	x4974
1716D	Chip Move brute force, dp, math	2000	x4972
1537E2	Erase and Extend (Hard Version) binary search, data structures, greedy, hashing, string suffix structures, strings, two pointers	2200	x4964
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x4963
923A	Primal Sport math, number theory	1700	x4963
710E	Generate a String dfs and similar, dp	2000	x4963
1310A	Recommendations data structures, greedy, sortings	1700	x4957
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x4954
1468K	The Robot brute force, implementation	1600	x4953
375B	Maximum Submatrix 2 data structures, dp, implementation, sortings	1600	x4949
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x4947
1032B	Personalized Cup	1200	x4945
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x4944
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x4942
1439A2	Binary Table (Hard Version) constructive algorithms, graphs, greedy, implementation	1900	x4942
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x4933
1217D	Coloring Edges constructive algorithms, dfs and similar, graphs	2100	x4933
845B	Luba And The Ticket brute force, greedy, implementation	1600	x4930
1485D	Multiples and Power Differences constructive algorithms, graphs, math, number theory	2200	x4929
74A	Room Leader implementation	1000	x4928
1214D	Treasure Island dfs and similar, dp, flows, hashing	1900	x4927
479E	Riding in a Lift combinatorics, dp	1900	x4926
534C	Polycarpus' Dice math	1600	x4923
687C	The Values You Can Make dp	1900	x4921
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x4920
107A	Dorm Water Supply dfs and similar, graphs	1400	x4912
143B	Help Kingdom of Far Far Away 2 implementation, strings	1200	x4910