Problemset - Codeforces

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Codeforces Round (Div. 3)
7 days

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Difficulty: —

math

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Problems

#	Name
1250L	Divide The Students binary search, greedy, math	1500	x4040
1250H	Happy Birthday math	1500	x3992
1250B	The Feast and the Bus brute force, constructive algorithms, greedy, math	1800	x2575
1249C2	Good Numbers (hard version) binary search, greedy, math, meet-in-the-middle	1500	x12423
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16486
1249B1	Books Exchange (easy version) dsu, math	1000	x20370
1249A	Yet Another Dividing into Teams math	800	x22068
1248B	Grow The Tree greedy, math, sortings	900	x16672
1248A	Integer Points geometry, math	1000	x13938
1245A	Good ol' Numbers Coloring math, number theory	1000	x14068
1244G	Running in Pairs constructive algorithms, greedy, math	2400	x1265
1244C	The Football Season brute force, math, number theory	2000	x7454
1244A	Pens and Pencils math	800	x19002
1242D	Number Discovery math	3400	x180
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12460
1239A	Ivan the Fool and the Probability Theory combinatorics, dp, math	1700	x7232
1238C	Standard Free2play dp, greedy, math	1600	x7252
1238A	Prime Subtraction math, number theory	900	x23599
1237E	Balanced Binary Search Trees dp, math	2400	x1274
1237A	Balanced Rating Changes implementation, math	1000	x18967
1236F	Alice and the Cactus dfs and similar, graphs, math, probabilities	3000	x173
1236B	Alice and the List of Presents combinatorics, math	1500	x10743
1236A	Stones brute force, greedy, math	800	x15950
1234E	Special Permutations math	2000	x2739
1234A	Equalize Prices Again math	800	x27519
1228E	Another Filling the Grid combinatorics, dp, math	2300	x2563
1228C	Primes and Multiplication math, number theory	1700	x8882
1228B	Filling the Grid implementation, math	1400	x11450
1227F2	Wrong Answer on test 233 (Hard Version) combinatorics, math	2400	x1471
1227A	Math Problem math	1100	x9612
1225D	Power Products hashing, math, number theory	1800	x7610
1225C	p-binary bitmasks, brute force, math	1600	x8818
1225A	Forgetting Things math	900	x15693
1223G	Wooden Raft binary search, math, number theory	3200	x228
1223A	CME math	800	x21488
1221C	Perfect Team binary search, math	1200	x20307
1221A	2048 Game brute force, greedy, math	1000	x16378
1220D	Alex and Julian bitmasks, math, number theory	1900	x3844
1220B	Multiplication Table math, number theory	1300	x11509
1217E	Sum Queries? data structures, greedy, implementation, math	2300	x1841
1217B	Zmei Gorynich greedy, math	1600	x11064
1217A	Creating a Character binary search, math	1300	x14812
1216E2	Numerical Sequence (hard version) binary search, math	2200	x1435
1216E1	Numerical Sequence (easy version) binary search, brute force, math	1900	x3388
1216D	Swords math	1300	x10936
1216C	White Sheet geometry, math	1700	x8993
1215D	Ticket Game games, greedy, math	1700	x5991
1215A	Yellow Cards greedy, implementation, math	1000	x11434
1214E	Petya and Construction Set constructive algorithms, graphs, math, sortings, trees	2000	x2659
1214B	Badges brute force, math	1100	x10706
1214A	Optimal Currency Exchange brute force, math	1400	x8860
1213D2	Equalizing by Division (hard version) brute force, math, sortings	1600	x11252
1213C	Book Reading math	1200	x18154
1213A	Chips Moving math	900	x23721
1211G	King's Path *special problem, math, trees	2500	x68
1211D	Teams *special problem, binary search, greedy, math	2000	x226
1210E	Wojtek and Card Tricks math	2700	x391
1210C	Kamil and Making a Stream math, number theory, trees	2000	x3214
1209H	Moving Walkways data structures, greedy, math	3300	x138
1209B	Koala and Lights implementation, math, number theory	1300	x8100
1209A	Paint the Numbers greedy, implementation, math	800	x12081
1208G	Polygons greedy, math, number theory	2800	x732
1208A	XORinacci math	900	x16500
1207E	XOR Guessing bitmasks, interactive, math	1900	x5782
1207A	There Are Two Types Of Burgers brute force, greedy, implementation, math	800	x21537
1206A	Choose Two Numbers math, sortings	800	x23704
1205F	Beauty of a Permutation constructive algorithms, math	3400	x122
1205A	Almost Equal constructive algorithms, greedy, math	1200	x13976
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2300	x1604
1204D2	Kirk and a Binary String (hard version) data structures, greedy, math, strings	2100	x3056
1204B	Mislove Has Lost an Array greedy, math	900	x17332
1204A	BowWow and the Timetable math	1000	x20237
1203C	Common Divisors implementation, math	1300	x19911
1203B	Equal Rectangles greedy, math	1200	x15740
1202F	You Are Given Some Letters... binary search, implementation, math	2700	x374
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x5038
1202C	You Are Given a WASD-string... brute force, data structures, dp, greedy, implementation, math, strings	2100	x2491
1201C	Maximum Median binary search, greedy, math, sortings	1400	x22010
1201B	Zero Array greedy, math	1500	x18076
1200F	Graph Traveler brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2300	x1050
1200C	Round Corridor math, number theory	1400	x9749
1199B	Water Lily geometry, math	1000	x19931
1197D	Yet Another Subarray Problem dp, greedy, math	1900	x5268
1197A	DIY Wooden Ladder greedy, math, sortings	900	x13421
1196B	Odd Sum Segments constructive algorithms, math	1200	x16349
1196A	Three Piles of Candies brute force, constructive algorithms, math	800	x27382
1195F	Geometers Anonymous Club data structures, geometry, math, sortings	2500	x736
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4563
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7795
1195B	Sport Mafia binary search, brute force, math	1000	x19268
1195A	Drinks Choosing greedy, math	1000	x12611
1194D	1-2-K Game games, math	1700	x6377
1194A	Remove a Progression math	800	x16058
1193A	Amusement Park *special problem, dp, math		x247
1189C	Candies! data structures, dp, implementation, math	1400	x10465
1189B	Number Circle greedy, math, sortings	1100	x13902
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4375
1187F	Expected Square Beauty dp, math, probabilities	2500	x851
1187A	Stickers and Toys math	900	x14647
1186E	Vus the Cossack and a Field divide and conquer, implementation, math	2500	x559