Problemset - Codeforces

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Codeforces Round 940 (Div. 2)
5 days

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Difficulty: —

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Problems

#	Name
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x17495
1585A	Life of a Flower implementation	800	x17403
1304B	Longest Palindrome brute force, constructive algorithms, greedy, implementation, strings	1100	x17369
1863A	Channel greedy, implementation	800	x17358
1138A	Sushi for Two binary search, greedy, implementation	900	x17327
1091A	New Year and the Christmas Ornament brute force, implementation, math	800	x17297
1637C	Andrew and Stones greedy, implementation	1200	x17272
365A	Good Number implementation	1100	x17267
1808A	Lucky Numbers brute force, implementation	900	x17237
1669G	Fall Down dfs and similar, implementation	1200	x17196
546B	Soldier and Badges brute force, greedy, implementation, sortings	1200	x17138
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x17133
999C	Alphabetic Removals implementation	1200	x17132
1839A	The Good Array greedy, implementation, math	800	x17048
672B	Different is Good constructive algorithms, implementation, strings	1000	x17023
999B	Reversing Encryption implementation	900	x17015
507A	Amr and Music greedy, implementation, sortings	1000	x16910
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x16905
1681C	Double Sort implementation, sortings	1200	x16898
1480B	The Great Hero greedy, implementation, sortings	900	x16894
486B	OR in Matrix greedy, hashing, implementation	1300	x16872
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x16857
265B	Roadside Trees (Simplified Edition) greedy, implementation	1000	x16848
1679B	Stone Age Problem data structures, implementation	1200	x16801
560A	Currency System in Geraldion implementation, sortings	1000	x16787
1659A	Red Versus Blue constructive algorithms, greedy, implementation, math	1000	x16781
918A	Eleven brute force, implementation	800	x16708
1750A	Indirect Sort constructive algorithms, implementation, math	800	x16706
609A	USB Flash Drives greedy, implementation, sortings	800	x16704
1703E	Mirror Grid implementation	1200	x16702
289B	Polo the Penguin and Matrix brute force, dp, implementation, sortings, ternary search	1400	x16693
16B	Burglar and Matches greedy, implementation, sortings	900	x16672
166A	Rank List binary search, implementation, sortings	1100	x16660
1485B	Replace and Keep Sorted dp, implementation, math	1200	x16619
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16616
1922C	Closest Cities greedy, implementation, math	1300	x16597
1144B	Parity Alternated Deletions greedy, implementation, sortings	900	x16589
615A	Bulbs implementation	800	x16587
1111A	Superhero Transformation implementation, strings	1000	x16545
1890B	Qingshan Loves Strings constructive algorithms, implementation	800	x16530
462A	Appleman and Easy Task brute force, implementation	1000	x16515
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16503
109A	Lucky Sum of Digits brute force, implementation	1000	x16474
1657C	Bracket Sequence Deletion greedy, implementation	1200	x16463
1139A	Even Substrings implementation, strings	800	x16435
1561A	Simply Strange Sort brute force, implementation, sortings	800	x16431
1234B2	Social Network (hard version) data structures, implementation	1300	x16416
1351B	Square? brute force, implementation, math	900	x16401
1203A	Circle of Students implementation	1000	x16349
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16345
165B	Burning Midnight Oil binary search, implementation	1500	x16342
1133A	Middle of the Contest implementation	1000	x16341
1650C	Weight of the System of Nested Segments greedy, hashing, implementation, sortings	1200	x16307
1820A	Yura's New Name implementation, strings	800	x16304
573A	Bear and Poker implementation, math, number theory	1300	x16250
816B	Karen and Coffee binary search, data structures, implementation	1400	x16244
1720C	Corners greedy, implementation	1200	x16239
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x16236
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16213
987A	Infinity Gauntlet implementation	800	x16210
385A	Bear and Raspberry brute force, greedy, implementation	1000	x16184
186A	Comparing Strings implementation, strings	1100	x16164
1704B	Luke is a Foodie brute force, greedy, implementation	1000	x16151
361A	Levko and Table constructive algorithms, implementation	800	x16146
1762B	Make Array Good constructive algorithms, implementation, number theory, sortings	1100	x16132
1668A	Direction Change implementation, math	800	x16130
152A	Marks implementation	900	x16115
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16109
1136A	Nastya Is Reading a Book implementation	800	x16091
496A	Minimum Difficulty brute force, implementation, math	900	x16063
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x16042
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x16021
764A	Taymyr is calling you brute force, implementation, math	800	x16009
551A	GukiZ and Contest brute force, implementation, sortings	800	x15976
1796B	Asterisk-Minor Template implementation, strings	1000	x15957
1419B	Stairs brute force, constructive algorithms, greedy, implementation, math	1200	x15933
295A	Greg and Array data structures, implementation	1400	x15927
1750B	Maximum Substring brute force, greedy, implementation	800	x15920
350A	TL brute force, greedy, implementation	1200	x15889
733A	Grasshopper And the String implementation	1000	x15870
919A	Supermarket brute force, greedy, implementation	800	x15864
384A	Coder implementation	800	x15848
401A	Vanya and Cards implementation, math	800	x15846
1923B	Monsters Attack! dp, greedy, implementation	1100	x15836
1672A	Log Chopping games, implementation, math	800	x15811
670D1	Magic Powder - 1 binary search, brute force, implementation	1400	x15810
1798B	Three Sevens brute force, data structures, greedy, implementation	1000	x15806
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x15794
1598B	Groups brute force, implementation	1000	x15757
352B	Jeff and Periods implementation, sortings	1300	x15730
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15724
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x15719
570B	Simple Game constructive algorithms, games, greedy, implementation, math	1300	x15717
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x15695
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x15683
433A	Kitahara Haruki's Gift brute force, implementation	1100	x15673
1881C	Perfect Square brute force, implementation	1200	x15672
218B	Airport implementation	1100	x15672
1678B1	Tokitsukaze and Good 01-String (easy version) implementation	800	x15652
1278A	Shuffle Hashing brute force, implementation, strings	1000	x15651