Problemset - Codeforces

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Problems

#	Name
725C	Hidden Word brute force, constructive algorithms, implementation, strings	1600	x2615
724D	Dense Subsequence data structures, greedy, strings	1900	x2276
724C	Ray Tracing greedy, hashing, implementation, math, number theory, sortings	1800	x2127
724B	Batch Sort brute force, greedy, implementation, math	1500	x3996
723D	Lakes in Berland dfs and similar, dsu, graphs, greedy, implementation	1600	x6898
723C	Polycarp at the Radio greedy	1600	x4575
722D	Generating Sets binary search, data structures, dfs and similar, greedy, strings, trees	1900	x3111
722C	Destroying Array data structures, dsu	1600	x9132
722A	Broken Clock brute force, implementation	1300	x6617
721C	Journey dp, graphs	1800	x5783
719B	Anatoly and Cockroaches greedy	1400	x8425
718A	Efim and Strange Grade dp, implementation, math	1700	x4385
717E	Paint it really, really dark gray dfs and similar	1900	x1434
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1389
716B	Complete the Word greedy, two pointers	1300	x11975
715A	Plus and Square Root constructive algorithms, math	1600	x5577
713A	Sonya and Queries data structures, implementation	1400	x8409
712C	Memory and De-Evolution greedy, math	1600	x5746
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4396
711C	Coloring Trees dp	1700	x7962
711B	Chris and Magic Square constructive algorithms, implementation	1400	x8396
710C	Magic Odd Square constructive algorithms, math	1500	x5050
710B	Optimal Point on a Line brute force, sortings	1400	x8668
709B	Checkpoints greedy, implementation, sortings	1500	x4718
708B	Recover the String constructive algorithms, greedy, implementation, math	1900	x3219
707C	Pythagorean Triples math, number theory	1500	x12484
707B	Bakery graphs	1300	x12855
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x9743
706C	Hard problem dp, strings	1600	x15925
704A	Thor brute force, data structures, implementation	1600	x9075
703B	Mishka and trip implementation, math	1400	x5653
702D	Road to Post Office math	1900	x3302
702C	Cellular Network binary search, implementation, two pointers	1500	x13977
702B	Powers of Two brute force, data structures, implementation, math	1500	x11536
701C	They Are Everywhere binary search, strings, two pointers	1500	x14363
700B	Connecting Universities dfs and similar, dp, graphs, trees	1800	x3882
700A	As Fast As Possible binary search, math	1900	x3164
699B	One Bomb implementation	1400	x7557
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5661
698A	Vacations dp	1400	x29469
697B	Barnicle brute force, implementation, math, strings	1400	x5688
696B	Puzzles dfs and similar, math, probabilities, trees	1700	x3424
696A	Lorenzo Von Matterhorn brute force, data structures, implementation, trees	1500	x6022
691E	Xor-sequences matrices	1900	x2463
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5402
691C	Exponential notation implementation, strings	1800	x2562
691B	s-palindrome implementation, strings	1600	x4776
690F1	Tree of Life (easy)	1300	x2129
690E1	Photographs (I)	1800	x673
690D2	The Wall (medium) combinatorics	1800	x1225
690C2	Brain Network (medium) dfs and similar, graphs, trees	1500	x3649
690C1	Brain Network (easy)	1300	x2723
690B1	Recover Polygon (easy)	1700	x935
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x5088
689B	Mike and Shortcuts dfs and similar, graphs, greedy, shortest paths	1600	x5660
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5229
687C	The Values You Can Make dp	1900	x5230
687B	Remainders Game chinese remainder theorem, math, number theory	1800	x5720
687A	NP-Hard Problem dfs and similar, graphs	1500	x14022
685B	Kay and Snowflake data structures, dfs and similar, dp, trees	1900	x3914
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4163
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	x322
683C	Symmetric Difference *special problem	1600	x315
683B	The Teacher of Physical Education *special problem	1600	x317
682D	Alyona and Strings dp, strings	1900	x3259
682C	Alyona and the Tree dfs and similar, dp, graphs, trees	1600	x7081
681C	Heap Operations constructive algorithms, data structures, greedy	1600	x7453
681B	Economy Game brute force	1300	x8832
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x12597
678D	Iterated Linear Function math, number theory	1700	x4448
678C	Joty and Chocolate implementation, math, number theory	1600	x9296
678B	The Same Calendar implementation	1600	x4069
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6339
677B	Vanya and Food Processor implementation, math	1400	x7582
676C	Vasya and String binary search, dp, strings, two pointers	1500	x18467
676B	Pyramid of Glasses implementation, math, math	1500	x5474
675D	Tree Construction data structures, trees	1800	x3732
675B	Restoring Painting brute force, constructive algorithms, math	1400	x7343
673B	Problems for Round greedy, implementation	1300	x3505
671A	Recycling Bottles dp, geometry, greedy, implementation	1800	x4171
670E	Correct Bracket Sequence Editor data structures, dsu, strings	1700	x3177
670D2	Magic Powder - 2 binary search, implementation	1500	x13701
670D1	Magic Powder - 1 binary search, brute force, implementation	1400	x16911
670C	Cinema implementation, sortings	1300	x9022
666A	Reberland Linguistics dp, implementation, strings	1800	x3435
665D	Simple Subset constructive algorithms, greedy, number theory	1800	x3330
665C	Simple Strings dp, greedy, strings	1300	x9763
665B	Shopping brute force	1400	x3508
665A	Buses Between Cities implementation	1600	x2901
663A	Rebus constructive algorithms, expression parsing, greedy, math	1800	x3276
661F	Primes in Interval *special problem	1900	x259
661B	Seasons *special problem	1900	x228
661A	Lazy Caterer Sequence *special problem	1300	x633
660D	Number of Parallelograms geometry	1900	x3915
660C	Hard Process binary search, dp, two pointers	1600	x9240
659E	New Reform data structures, dfs and similar, dsu, graphs, greedy	1600	x7396