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
630H	Benches combinatorics, math	1400	x4733
1821D	Black Cells binary search, brute force, greedy, math	1900	x4730
1493D	GCD of an Array brute force, data structures, hashing, implementation, math, number theory, sortings, two pointers	2100	x4729
353C	Find Maximum implementation, math, number theory	1600	x4709
1355E	Restorer Distance binary search, greedy, math, sortings, ternary search	2100	x4704
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x4694
1616D	Keep the Average High dp, greedy, math	2000	x4690
578A	A Problem about Polyline geometry, math	1700	x4683
1898D	Absolute Beauty greedy, math	1900	x4679
1294E	Obtain a Permutation greedy, implementation, math	1900	x4678
809A	Do you want a date? implementation, math, sortings	1500	x4648
1423K	Lonely Numbers binary search, math, number theory, two pointers	1600	x4647
375A	Divisible by Seven math, number theory	1600	x4645
136B	Ternary Logic implementation, math	1100	x4639
451D	Count Good Substrings math	2000	x4635
1042C	Array Product constructive algorithms, greedy, math	1700	x4623
1380D	Berserk And Fireball constructive algorithms, greedy, implementation, math, two pointers	2000	x4612
884C	Bertown Subway dfs and similar, greedy, math	1500	x4610
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4593
466B	Wonder Room brute force, math	2000	x4587
1830B	The BOSS Can Count Pairs brute force, math	2000	x4569
405C	Unusual Product implementation, math	1600	x4563
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4560
986B	Petr and Permutations combinatorics, math	1800	x4553
652A	Gabriel and Caterpillar implementation, math	1400	x4550
748C	Santa Claus and Robot constructive algorithms, math	1400	x4539
197B	Limit math	1400	x4532
992C	Nastya and a Wardrobe math	1600	x4508
402A	Nuts greedy, math	1100	x4503
630N	Forecast math	1300	x4501
90A	Cableway greedy, math	1000	x4489
120A	Elevator brute force, implementation, math	1000	x4483
94B	Friends graphs, implementation, math	1300	x4479
1632D	New Year Concert binary search, data structures, greedy, math, number theory, two pointers	2000	x4452
983A	Finite or not? implementation, math	1700	x4447
475D	CGCDSSQ brute force, data structures, math	2000	x4438
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4435
1092D1	Great Vova Wall (Version 1) greedy, implementation, math	2200	x4435
1613D	MEX Sequences dp, math	1900	x4426
1016D	Vasya And The Matrix constructive algorithms, flows, math	1800	x4421
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4411
911D	Inversion Counting brute force, math	1800	x4411
597A	Divisibility math	1600	x4408
900C	Remove Extra One brute force, data structures, math	1700	x4407
1254B1	Send Boxes to Alice (Easy Version) constructive algorithms, greedy, math, number theory, ternary search, two pointers	1800	x4404
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4394
401B	Sereja and Contests greedy, implementation, math	1200	x4377
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4369
1043D	Mysterious Crime brute force, combinatorics, math, meet-in-the-middle, two pointers	1700	x4366
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4363
1270D	Strange Device constructive algorithms, interactive, math, sortings	1900	x4360
71B	Progress Bar implementation, math	1300	x4354
773A	Success Rate binary search, math	1700	x4352
552D	Vanya and Triangles brute force, combinatorics, data structures, geometry, math, sortings	1900	x4351
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4348
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4346
1538G	Gift Set binary search, greedy, math, ternary search	2100	x4345
789B	Masha and geometric depression brute force, implementation, math	1700	x4341
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4329
718A	Efim and Strange Grade dp, implementation, math	1700	x4316
936A	Save Energy! binary search, implementation, math	1700	x4312
476D	Dreamoon and Sets constructive algorithms, greedy, math	1900	x4312
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4302
964B	Messages math	1300	x4286
626C	Block Towers brute force, greedy, math, number theory	1600	x4285
894C	Marco and GCD Sequence constructive algorithms, math	1900	x4276
507C	Guess Your Way Out! implementation, math, trees	1700	x4273
678D	Iterated Linear Function math, number theory	1700	x4261
11B	Jumping Jack math	1600	x4258
1717D	Madoka and The Corruption Scheme combinatorics, constructive algorithms, greedy, math	1900	x4237
154B	Colliders math, number theory	1600	x4223
1634D	Finding Zero constructive algorithms, interactive, math	2000	x4216
80B	Depression geometry, math	1200	x4215
7C	Line math, number theory	1800	x4214
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4204
1759G	Restore the Permutation binary search, constructive algorithms, data structures, greedy, math	1900	x4199
257C	View Angle brute force, geometry, math	1800	x4186
1451E1	Bitwise Queries (Easy Version) bitmasks, constructive algorithms, interactive, math	2000	x4181
792C	Divide by Three dp, greedy, math, number theory	2000	x4173
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4161
1753C	Wish I Knew How to Sort dp, math, probabilities	2000	x4142
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4142
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4117
340C	Tourist Problem combinatorics, implementation, math	1600	x4098
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4089
520C	DNA Alignment math, strings	1500	x4080
140A	New Year Table geometry, math	1700	x4079
1453D	Checkpoints brute force, constructive algorithms, greedy, math, probabilities	1900	x4072
772A	Voltage Keepsake binary search, math	1800	x4067
1056B	Divide Candies math, number theory	1600	x4062
112B	Petya and Square implementation, math	1200	x4060
1438D	Powerful Ksenia bitmasks, constructive algorithms, math	2200	x4056
1421D	Hexagons brute force, constructive algorithms, greedy, implementation, math, shortest paths	1900	x4046
1389D	Segment Intersections brute force, greedy, implementation, math	2100	x4021
1250L	Divide The Students binary search, greedy, math	1500	x4015
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x4014
1677B	Tokitsukaze and Meeting data structures, implementation, math	1700	x4008
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x4000
1117D	Magic Gems dp, math, matrices	2100	x3999
483B	Friends and Presents binary search, math	1800	x3985