Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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brute force

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Problems

#	Name
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x502
1606F	Tree Queries brute force, dp, trees	2800	x512
1612F	Armor and Weapons brute force, dp, greedy, shortest paths	2800	x560
1545C	AquaMoon and Permutations 2-sat, brute force, combinatorics, constructive algorithms, graph matchings, graphs	2800	x582
1819D	Misha and Apples brute force, data structures, dp, two pointers	2800	x593
1830D	Mex Tree brute force, dp, trees	2800	x595
1286C2	Madhouse (Hard version) brute force, constructive algorithms, hashing, interactive, math	2800	x606
1383D	Rearrange brute force, constructive algorithms, graphs, greedy, sortings	2800	x639
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x686
986E	Prince's Problem brute force, data structures, math, number theory, trees	2800	x698
1693D	Decinc Dividing brute force, data structures, divide and conquer, dp, greedy	2800	x770
1400F	x-prime Substrings brute force, dfs and similar, dp, string suffix structures, strings	2800	x770
1375G	Tree Modification brute force, constructive algorithms, dfs and similar, graph matchings, graphs, trees	2800	x1637
109E	Lucky Interval brute force, math	2700	x98
105D	Entertaining Geodetics brute force, dsu, implementation	2700	x135
309D	Tennis Rackets brute force, geometry	2700	x171
86E	Long sequence brute force, math, matrices	2700	x178
1271F	Divide The Students brute force	2700	x187
575C	Party bitmasks, brute force, graph matchings	2700	x211
97D	Robot in Basement bitmasks, brute force, implementation	2700	x229
991F	Concise and clear brute force, greedy, implementation, math	2700	x294
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x314
460E	Roland and Rose brute force, geometry, math, sortings	2700	x334
1599G	Shortest path brute force, geometry, math, shortest paths	2700	x357
1036G	Sources and Sinks bitmasks, brute force, dfs and similar	2700	x361
333C	Lucky Tickets brute force, constructive algorithms	2700	x374
1867F	Most Different Tree brute force, constructive algorithms, dfs and similar, greedy, hashing	2700	x399
1728G	Illumination binary search, bitmasks, brute force, combinatorics, dp, math, two pointers	2700	x407
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x417
1814F	Communication Towers brute force, divide and conquer, dsu	2700	x451
833C	Ever-Hungry Krakozyabra brute force, combinatorics, greedy, math	2700	x460
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x511
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x525
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x563
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x581
949E	Binary Cards brute force	2700	x595
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x598
1774F2	Magician and Pigs (Hard Version) binary search, brute force, data structures, implementation	2700	x636
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x647
1421E	Swedish Heroes brute force, dp, implementation	2700	x669
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x697
1658F	Juju and Binary String brute force, constructive algorithms, greedy, math	2700	x723
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x765
293B	Distinct Paths brute force, combinatorics	2700	x772
839E	Mother of Dragons brute force, graphs, math, meet-in-the-middle	2700	x882
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x970
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x1040
1634F	Fibonacci Additions brute force, data structures, hashing, implementation, math	2700	x1524
1431H	Rogue-like Game *special problem, brute force, greedy, two pointers	2600	x64
1120E	The very same Munchhausen brute force	2600	x110
152D	Frames brute force	2600	x238
175E	Power Defence brute force, dp, geometry, greedy	2600	x260
1599J	Bob's Beautiful Array bitmasks, brute force, greedy	2600	x283
274C	The Last Hole! brute force, geometry	2600	x346
201D	Brand New Problem bitmasks, brute force, dp	2600	x388
761F	Dasha and Photos brute force, data structures, dp, implementation	2600	x401
1063D	Candies for Children brute force, math	2600	x417
1905F	Field Should Not Be Empty brute force, data structures, divide and conquer	2600	x442
955D	Scissors brute force, strings	2600	x453
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x459
685D	Kay and Eternity brute force, implementation, sortings	2600	x477
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x479
1651E	Sum of Matchings brute force, combinatorics, constructive algorithms, dfs and similar, graph matchings, greedy, math	2600	x493
698D	Limak and Shooting Points brute force, geometry, math	2600	x502
963C	Cutting Rectangle brute force, math, number theory	2600	x558
725E	Too Much Money brute force, greedy	2600	x641
763C	Timofey and remoduling brute force, implementation, math, number theory	2600	x702
1267I	Intriguing Selection brute force, constructive algorithms, implementation, interactive, sortings	2600	x727
1898F	Vova Escapes the Matrix brute force, dfs and similar, divide and conquer, shortest paths	2600	x732
1844F1	Min Cost Permutation (Easy Version) brute force, constructive algorithms, greedy, math	2600	x736
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x737
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x763
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x783
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x805
1805F1	Survival of the Weakest (easy version) binary search, brute force, implementation, math, sortings	2600	x806
1700E	Serega the Pirate brute force, constructive algorithms	2600	x824
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x841
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x891
1685C	Bring Balance brute force, constructive algorithms, greedy	2600	x910
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x931
1580B	Mathematics Curriculum brute force, combinatorics, dp, trees	2600	x965
1827C	Palindrome Partition binary search, brute force, data structures, dp, hashing, strings	2600	x1128
1793F	Rebrending brute force, data structures, divide and conquer, implementation	2600	x1270
1325E	Ehab's REAL Number Theory Problem brute force, dfs and similar, graphs, number theory, shortest paths	2600	x1799
6D	Lizards and Basements 2 brute force, dp	2600	x1806
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1939
940F	Machine Learning brute force, data structures	2600	x2407
105E	Lift and Throw brute force	2500	x179
363E	Two Circles brute force, data structures, implementation	2500	x192
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2500	x279
135D	Cycle brute force, dfs and similar, implementation	2500	x293
294D	Shaass and Painter Robot brute force, implementation, number theory	2500	x298
852A	Digits brute force, implementation, math	2500	x364
263E	Rhombus brute force, data structures, dp	2500	x394
60D	Savior brute force, dsu, math	2500	x394
260E	Dividing Kingdom binary search, brute force, data structures	2500	x408
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x409
93C	Azembler brute force, implementation	2500	x409
1181E1	A Story of One Country (Easy) brute force, divide and conquer, sortings	2500	x448
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x453