Problemset - Codeforces

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Problems

#	Name
687B	Remainders Game chinese remainder theorem, math, number theory	1800	x5547
687A	NP-Hard Problem dfs and similar, graphs	1500	x13767
686B	Little Robber Girl's Zoo constructive algorithms, implementation, sortings	1100	x7716
686A	Free Ice Cream constructive algorithms, implementation	800	x35555
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x503
685D	Kay and Eternity brute force, implementation, sortings	2600	x477
685C	Optimal Point binary search, math	2900	x576
685B	Kay and Snowflake data structures, dfs and similar, dp, trees	1900	x3771
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4142
683J	The Hero with Bombs *special problem	3000	x40
683I	Loader *special problem, graphs	2500	x38
683H	Exchange of Books *special problem	1900	x95
683G	The Fraction *special problem	1900	x130
683F	Reformat the String *special problem	1800	x146
683E	Hammer throwing *special problem	1800	x187
683D	Chocolate Bar *special problem, math	1400	x319
683C	Symmetric Difference *special problem	1600	x314
683B	The Teacher of Physical Education *special problem	1600	x316
683A	The Check of the Point *special problem, geometry	1200	x785
682E	Alyona and Triangles geometry, two pointers	2600	x647
682D	Alyona and Strings dp, strings	1900	x3172
682C	Alyona and the Tree dfs and similar, dp, graphs, trees	1600	x7001
682B	Alyona and Mex sortings	1200	x11093
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x20486
681E	Runaway to a Shadow geometry, sortings	2500	x450
681D	Gifts by the List constructive algorithms, dfs and similar, graphs, trees	2000	x1718
681C	Heap Operations constructive algorithms, data structures, greedy	1600	x7279
681B	Economy Game brute force	1300	x8766
681A	A Good Contest implementation	800	x15051
680B	Bear and Finding Criminals constructive algorithms, implementation	1000	x23406
680A	Bear and Five Cards constructive algorithms, implementation	800	x12162
679E	Bear and Bad Powers of 42 data structures	3100	x660
679D	Bear and Chase brute force, dfs and similar, graphs, implementation, math, probabilities	2900	x311
679C	Bear and Square Grid dfs and similar, dsu, implementation	2400	x1132
679B	Bear and Tower of Cubes binary search, dp, greedy	2200	x2113
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x12336
678F	Lena and Queries data structures, divide and conquer, geometry	2500	x824
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x1901
678D	Iterated Linear Function math, number theory	1700	x4275
678C	Joty and Chocolate implementation, math, number theory	1600	x8945
678B	The Same Calendar implementation	1600	x4018
678A	Johny Likes Numbers implementation, math	800	x12546
677E	Vanya and Balloons binary search, brute force, dp, implementation	2300	x582
677D	Vanya and Treasure data structures, dp, graphs, shortest paths	2300	x1524
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6277
677B	Vanya and Food Processor implementation, math	1400	x7532
677A	Vanya and Fence implementation	800	x130750
676E	The Last Fight Between Human and AI math	2400	x883
676D	Theseus and labyrinth graphs, implementation, shortest paths	2000	x1828
676C	Vasya and String binary search, dp, strings, two pointers	1500	x18118
676B	Pyramid of Glasses implementation, math, math	1500	x5457
676A	Nicholas and Permutation constructive algorithms, implementation	800	x13639
675E	Trains and Statistic data structures, dp, greedy	2300	x2611
675D	Tree Construction data structures, trees	1800	x3621
675C	Money Transfers constructive algorithms, data structures, greedy, sortings	2100	x3420
675B	Restoring Painting brute force, constructive algorithms, math	1400	x7286
675A	Infinite Sequence math	1100	x14749
673B	Problems for Round greedy, implementation	1300	x3496
673A	Bear and Game implementation	800	x9902
672B	Different is Good constructive algorithms, implementation, strings	1000	x17054
672A	Summer Camp implementation	800	x14997
671E	Organizing a Race data structures, greedy	3300	x394
671D	Roads in Yusland data structures, dp, greedy	2900	x1109
671C	Ultimate Weirdness of an Array data structures, number theory	2800	x662
671B	Robin Hood binary search, greedy	2000	x2967
671A	Recycling Bottles dp, geometry, greedy, implementation	1800	x4104
670F	Restore a Number brute force, constructive algorithms, strings	2300	x847
670E	Correct Bracket Sequence Editor data structures, dsu, strings	1700	x3152
670D2	Magic Powder - 2 binary search, implementation	1500	x13060
670D1	Magic Powder - 1 binary search, brute force, implementation	1400	x16014
670C	Cinema implementation, sortings	1300	x8918
670B	Game of Robots implementation	1000	x10972
670A	Holidays brute force, constructive algorithms, greedy, math	900	x16413
669A	Little Artem and Presents math	800	x10545
667B	Coat of Anticubism constructive algorithms, geometry	1100	x5454
667A	Pouring Rain geometry, math	1100	x7784
666E	Forensic Examination data structures, string suffix structures	3100	x1315
666D	Chain Reaction brute force, geometry	3000	x270
666C	Codeword combinatorics, strings	2500	x765
666B	World Tour graphs, shortest paths	2000	x2066
666A	Reberland Linguistics dp, implementation, strings	1800	x3416
665F	Four Divisors data structures, dp, math, number theory, sortings, two pointers	2400	x576
665E	Beautiful Subarrays data structures, divide and conquer, strings, trees	2100	x2872
665D	Simple Subset constructive algorithms, greedy, number theory	1800	x3206
665C	Simple Strings dp, greedy, strings	1300	x9183
665B	Shopping brute force	1400	x3478
665A	Buses Between Cities implementation	1600	x2863
664A	Complicated GCD math, number theory	800	x17409
663A	Rebus constructive algorithms, expression parsing, greedy, math	1800	x3251
662E	To Hack or not to Hack brute force, dp, greedy	3100	x132
662D	International Olympiad constructive algorithms, greedy, implementation, math	2000	x1616
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1940
662B	Graph Coloring dfs and similar, graphs	2200	x1444
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x429
661H	Rotate Matrix *special problem	2400	x63
661G	Hungarian Notation *special problem	2200	x50
661F	Primes in Interval *special problem	1900	x230
661E	Divisibility Check *special problem	2000	x78
661D	Maximal Difference *special problem	2100	x124
661C	Array Sum *special problem	2000	x126