Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
45:31:27
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Before contest
Codeforces Round 941 (Div. 2)
45:31:27
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Problems

#	Name
1215A	Yellow Cards greedy, implementation, math	1000	x11245
1214E	Petya and Construction Set constructive algorithms, graphs, math, sortings, trees	2000	x2505
1214B	Badges brute force, math	1100	x10507
1214A	Optimal Currency Exchange brute force, math	1400	x8693
1213D2	Equalizing by Division (hard version) brute force, math, sortings	1600	x11025
1213C	Book Reading math	1200	x17932
1213A	Chips Moving math	900	x23462
1211G	King's Path *special problem, math, trees	2500	x66
1211D	Teams *special problem, binary search, greedy, math	2000	x223
1210E	Wojtek and Card Tricks math	2700	x389
1210C	Kamil and Making a Stream math, number theory, trees	2000	x3201
1209H	Moving Walkways data structures, greedy, math	3300	x135
1209B	Koala and Lights implementation, math, number theory	1300	x7933
1209A	Paint the Numbers greedy, implementation, math	800	x11922
1208G	Polygons greedy, math, number theory	2800	x720
1208A	XORinacci math	900	x16256
1207E	XOR Guessing bitmasks, interactive, math	1900	x5594
1207A	There Are Two Types Of Burgers brute force, greedy, implementation, math	800	x21283
1206A	Choose Two Numbers math, sortings	800	x23422
1205F	Beauty of a Permutation constructive algorithms, math	3400	x121
1205A	Almost Equal constructive algorithms, greedy, math	1200	x13805
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2300	x1574
1204D2	Kirk and a Binary String (hard version) data structures, greedy, math, strings	2100	x2971
1204B	Mislove Has Lost an Array greedy, math	900	x17122
1204A	BowWow and the Timetable math	1000	x19853
1203C	Common Divisors implementation, math	1300	x19516
1203B	Equal Rectangles greedy, math	1200	x15520
1202F	You Are Given Some Letters... binary search, implementation, math	2700	x368
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x4862
1202C	You Are Given a WASD-string... brute force, data structures, dp, greedy, implementation, math, strings	2100	x2351
1201C	Maximum Median binary search, greedy, math, sortings	1400	x21161
1201B	Zero Array greedy, math	1500	x17620
1200F	Graph Traveler brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2300	x907
1200C	Round Corridor math, number theory	1400	x9584
1199B	Water Lily geometry, math	1000	x19561
1197D	Yet Another Subarray Problem dp, greedy, math	1900	x5086
1197A	DIY Wooden Ladder greedy, math, sortings	900	x13237
1196B	Odd Sum Segments constructive algorithms, math	1200	x16108
1196A	Three Piles of Candies brute force, constructive algorithms, math	800	x27079
1195F	Geometers Anonymous Club data structures, geometry, math, sortings	2500	x693
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4411
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7659
1195B	Sport Mafia binary search, brute force, math	1000	x18916
1195A	Drinks Choosing greedy, math	1000	x12364
1194D	1-2-K Game games, math	1700	x6183
1194A	Remove a Progression math	800	x15824
1193A	Amusement Park *special problem, dp, math		x237
1189C	Candies! data structures, dp, implementation, math	1400	x10260
1189B	Number Circle greedy, math, sortings	1100	x13644
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4206
1187F	Expected Square Beauty dp, math, probabilities	2500	x836
1187A	Stickers and Toys math	900	x14434
1186E	Vus the Cossack and a Field divide and conquer, implementation, math	2500	x555
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x8701
1186C	Vus the Cossack and Strings implementation, math	1800	x5827
1185D	Extra Element implementation, math	1700	x6421
1185C2	Exam in BerSU (hard version) brute force, data structures, greedy, math	1700	x7135
1185A	Ropewalkers math	800	x14518
1184D2	Parallel Universes (Hard) math, matrices	3100	x102
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x136
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x5816
1183F	Topforces Strikes Back brute force, math, sortings	2100	x1762
1183C	Computer Game binary search, math	1400	x13633
1183B	Equalize Prices math	900	x17956
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2521
1182A	Filling Shapes dp, math	1000	x29038
1181A	Chunga-Changa greedy, math	1000	x13092
1180A	Alex and a Rhombus dp, implementation, math	800	x24087
1179C	Serge and Dining Room binary search, data structures, graph matchings, greedy, implementation, math, trees	2200	x1945
1178D	Prime Graph constructive algorithms, greedy, math, number theory	1500	x7135
1178C	Tiles combinatorics, greedy, math	1300	x11273
1176B	Merge it! math	1100	x16766
1175F	The Number of Subpermutations brute force, data structures, divide and conquer, hashing, math	2500	x1540
1175A	From Hero to Zero implementation, math	900	x17604
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x1347
1170A	Three Integers Again *special problem, math		x1365
1169A	Circle Metro implementation, math	900	x11520
1168E	Xor Permutations constructive algorithms, math	3100	x353
1167F	Scalar Queries combinatorics, data structures, math, sortings	2300	x1428
1167B	Lost Numbers brute force, divide and conquer, interactive, math	1400	x10538
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2663
1166D	Cute Sequences binary search, brute force, greedy, math	2200	x2025
1166B	All the Vowels Please constructive algorithms, math, number theory	1100	x11150
1165E	Two Arrays and Sum of Functions greedy, math, sortings	1600	x7763
1165D	Almost All Divisors math, number theory	1600	x15058
1165A	Remainder implementation, math	1100	x13517
1163E	Magical Permutation bitmasks, brute force, constructive algorithms, data structures, graphs, math	2400	x644
1163C2	Power Transmission (Hard Edition) data structures, geometry, implementation, math	1900	x3514
1163A	Eating Soup greedy, math	900	x12707
1159B	Expansion coefficient of the array implementation, math	1300	x6940
1159A	A pile of stones implementation, math	800	x12285
1158F	Density of subarrays dp, math	3500	x391
1158E	Strange device binary search, interactive, math, trees	3400	x147
1158D	Winding polygonal line constructive algorithms, geometry, greedy, math	2600	x662
1158C	Permutation recovery constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings	2100	x1695
1158B	The minimal unique substring constructive algorithms, math, strings	2200	x2055
1158A	The Party and Sweets binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers	1500	x6724
1157D	N Problems During K Days constructive algorithms, greedy, math	1900	x3602
1156F	Card Bag dp, math, probabilities	2300	x1325
1155E	Guess the Root brute force, interactive, math	2200	x1389