Problemset - Codeforces

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

#	Name
938D	Buy a Ticket data structures, graphs, shortest paths	2000	x5016
144B	Meeting implementation	1300	x5016
848A	From Y to Y constructive algorithms	1600	x5018
914D	Bash and a Tough Math Puzzle data structures, number theory	1900	x5022
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5042
924B	Three-level Laser binary search, greedy, two pointers	1600	x5042
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5043
1299B	Aerodynamic geometry	1800	x5052
1475F	Unusual Matrix 2-sat, brute force, constructive algorithms	1900	x5058
23A	You're Given a String... brute force, greedy	1200	x5058
1010B	Rocket binary search, interactive	1800	x5060
1009F	Dominant Indices data structures, dsu, trees	2300	x5068
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5068
1184B1	The Doctor Meets Vader (Easy) binary search, sortings	1400	x5073
1702G1	Passable Paths (easy version) dfs and similar, trees	1900	x5078
820B	Mister B and Angle in Polygon constructive algorithms, geometry, math	1300	x5079
1197D	Yet Another Subarray Problem dp, greedy, math	1900	x5083
261A	Maxim and Discounts greedy, sortings	1400	x5085
1426F	Number of Subsequences combinatorics, dp, strings	2000	x5086
725B	Food on the Plane implementation, math	1200	x5087
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x5093
378B	Semifinals implementation, sortings	1300	x5095
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5100
1147A	Hide and Seek graphs	1500	x5108
578B	"Or" Game brute force, greedy	1700	x5109
981C	Useful Decomposition implementation, trees	1400	x5111
586B	Laurenty and Shop implementation	1300	x5111
796D	Police Stations constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees	2100	x5112
299B	Ksusha the Squirrel brute force, implementation	900	x5112
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x5113
195B	After Training data structures, implementation, math	1300	x5114
141B	Hopscotch geometry, math	1400	x5114
1210A	Anadi and Domino brute force, graphs	1700	x5115
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5115
245B	Internet Address implementation, strings	1100	x5118
1776L	Controllers binary search, math	1500	x5121
1367E	Necklace Assembly brute force, dfs and similar, dp, graphs, greedy, number theory	1900	x5121
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5122
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1800	x5123
898C	Phone Numbers implementation, strings	1400	x5124
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5124
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5127
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x5135
1133E	K Balanced Teams dp, sortings, two pointers	1800	x5144
90B	African Crossword implementation, strings	1100	x5144
1280A	Cut and Paste implementation, math	1700	x5149
540D	Bad Luck Island dp, probabilities	1900	x5151
252A	Little Xor brute force, implementation	1100	x5154
87A	Trains implementation, math	1500	x5154
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x5155
1415D	XOR-gun bitmasks, brute force, constructive algorithms	2000	x5155
1031C	Cram Time greedy	1600	x5156
620E	New Year Tree bitmasks, data structures, trees	2100	x5156
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5162
1425F	Flamingoes of Mystery interactive	1400	x5164
1132C	Painting the Fence brute force	1700	x5167
9B	Running Student brute force, geometry, implementation	1200	x5173
949A	Zebras greedy	1600	x5176
424C	Magic Formulas math	1600	x5176
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5179
579B	Finding Team Member brute force, implementation, sortings	1300	x5181
1083A	The Fair Nut and the Best Path data structures, dp, trees	1800	x5182
1009C	Annoying Present greedy, math	1700	x5183
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5183
248B	Chilly Willy math, number theory	1400	x5186
383A	Milking cows data structures, greedy	1600	x5195
983B	XOR-pyramid dp	1800	x5206
660B	Seating On Bus implementation	1000	x5209
1781D	Many Perfect Squares brute force, math, number theory	1800	x5214
961C	Chessboard bitmasks, brute force, implementation	1400	x5214
1494C	1D Sokoban binary search, dp, greedy, implementation, two pointers	1900	x5221
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5222
1749D	Counting Arrays combinatorics, dp, math, number theory	1900	x5230
1151C	Problem for Nazar constructive algorithms, math	1800	x5231
859C	Pie Rules dp, games	1500	x5233
1744E2	Divisible Numbers (hard version) brute force, math, number theory	1900	x5235
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5235
459E	Pashmak and Graph dp, sortings	1900	x5251
149C	Division into Teams greedy, math, sortings	1500	x5251
148B	Escape implementation, math	1500	x5251
1735D	Meta-set brute force, combinatorics, data structures, hashing, math	1700	x5255
1510K	King's Task brute force, graphs, implementation	1200	x5257
878A	Short Program bitmasks, constructive algorithms	1600	x5257
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5258
412B	Network Configuration greedy, sortings	900	x5258
1227C	Messy constructive algorithms	1700	x5269
748B	Santa Claus and Keyboard Check implementation, strings	1500	x5269
621C	Wet Shark and Flowers combinatorics, math, number theory, probabilities	1700	x5275
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5277
196A	Lexicographically Maximum Subsequence greedy, strings	1100	x5280
1085D	Minimum Diameter Tree constructive algorithms, implementation, trees	1700	x5281
186B	Growing Mushrooms greedy, sortings	1200	x5281
734C	Anton and Making Potions binary search, dp, greedy, two pointers	1600	x5283
1372D	Omkar and Circle brute force, dp, games, greedy	2100	x5284
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5285
1066D	Boxes Packing binary search, implementation	1800	x5288
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5292
616C	The Labyrinth dfs and similar	1600	x5293
1450C1	Errich-Tac-Toe (Easy Version) constructive algorithms, math	2100	x5296
371D	Vessels data structures, dsu, implementation, trees	1800	x5296