Problemset - Codeforces

Problems

#	Name
712D	Memory and Scores combinatorics, dp, math	2200	x1847
712C	Memory and De-Evolution greedy, math	1600	x5851
711E	ZS and The Birthday Paradox math, number theory, probabilities	2300	x1277
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4500
711C	Coloring Trees dp	1700	x8279
711B	Chris and Magic Square constructive algorithms, implementation	1400	x8425
710F	String Set Queries brute force, data structures, hashing, interactive, string suffix structures, strings	2400	x1909
710E	Generate a String dfs and similar, dp	2000	x5238
710D	Two Arithmetic Progressions math, number theory	2500	x1365
710C	Magic Odd Square constructive algorithms, math	1500	x5137
710B	Optimal Point on a Line brute force, sortings	1400	x8806
709B	Checkpoints greedy, implementation, sortings	1500	x4741
708E	Student's Camp dp, math	3100	x1013
708D	Incorrect Flow flows	2900	x765
708C	Centroids data structures, dfs and similar, dp, graphs, greedy, trees	2300	x3383
708B	Recover the String constructive algorithms, greedy, implementation, math	1900	x3265
707E	Garlands data structures	2400	x1227
707D	Persistent Bookcase bitmasks, data structures, dfs and similar, implementation	2200	x2714
707C	Pythagorean Triples math, number theory	1500	x12698
706E	Working routine data structures, implementation	2500	x1193
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x10215
706C	Hard problem dp, strings	1600	x16442
704E	Iron Man data structures, geometry, trees	3300	x283
704D	Captain America flows, greedy	3100	x794
704C	Black Widow dp, graphs, implementation, math	2900	x464
704B	Ant Man dp, graphs, greedy	2500	x1880
704A	Thor brute force, data structures, implementation	1600	x9346
703E	Mishka and Divisors dp, number theory	2600	x601
703D	Mishka and Interesting sum data structures	2100	x3637
703C	Chris and Road geometry, implementation	2100	x1862
703B	Mishka and trip implementation, math	1400	x5688
702F	T-Shirts data structures	2800	x1425
702E	Analysis of Pathes in Functional Graph data structures, graphs	2100	x2617
702D	Road to Post Office math	1900	x3376
702C	Cellular Network binary search, implementation, two pointers	1500	x15351
702B	Powers of Two brute force, data structures, implementation, math	1500	x11991
701C	They Are Everywhere binary search, strings, two pointers	1500	x15347
700E	Cool Slogans string suffix structures, strings	3300	x1189
700D	Huffman Coding on Segment data structures, greedy	3100	x462
700C	Break Up dfs and similar, graphs	2600	x1306
700B	Connecting Universities dfs and similar, dp, graphs, trees	1800	x4020
700A	As Fast As Possible binary search, math	1900	x3200
699B	One Bomb implementation	1400	x7614
698F	Coprime Permutation combinatorics, number theory	3000	x438
698E	Cron	2800	x118
698D	Limak and Shooting Points brute force, geometry, math	2600	x542
698C	LRU bitmasks, dp, math, probabilities	2400	x1333
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5759
698A	Vacations dp	1400	x30794
697B	Barnicle brute force, implementation, math, strings	1400	x5760
696F	...Dary! binary search, geometry, two pointers	3300	x124
696E	...Wait for it... data structures, dsu, trees	3000	x559
696D	Legen... data structures, dp, matrices, strings	2500	x1313
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2087
696B	Puzzles dfs and similar, math, probabilities, trees	1700	x3526
696A	Lorenzo Von Matterhorn brute force, data structures, implementation, trees	1500	x6124
691F	Couple Cover brute force, dp, number theory	2200	x1308
691E	Xor-sequences matrices	1900	x2559
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5559
691C	Exponential notation implementation, strings	1800	x2615
691B	s-palindrome implementation, strings	1600	x7446
690F3	Tree of Life (hard) trees	3200	x53
690F2	Tree of Life (medium) constructive algorithms, hashing, trees	2700	x84
690E2	Photographs (II)	2600	x142
690E1	Photographs (I)	1800	x677
690D3	The Wall (hard) dp	2100	x523
690D2	The Wall (medium) combinatorics	1800	x1249
690C3	Brain Network (hard) trees	2200	x912
690C2	Brain Network (medium) dfs and similar, graphs, trees	1500	x3822
690B3	Recover Polygon (hard) data structures	2600	x93
690B2	Recover Polygon (medium) geometry	2600	x204
690B1	Recover Polygon (easy)	1700	x941
690A3	Collective Mindsets (hard)	2400	x552
690A2	Collective Mindsets (medium)	2300	x710
689E	Mike and Geometry Problem combinatorics, data structures, dp, geometry, implementation	2000	x1942
689D	Friends and Subsequences binary search, data structures	2100	x3490
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x5394
689B	Mike and Shortcuts dfs and similar, graphs, greedy, shortest paths	1600	x6022
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5274
687E	TOF dfs and similar, graphs	2900	x322
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x963
687C	The Values You Can Make dp	1900	x5648
687B	Remainders Game chinese remainder theorem, math, number theory	1800	x5951
687A	NP-Hard Problem dfs and similar, graphs	1500	x14473
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x557
685D	Kay and Eternity brute force, implementation, sortings	2600	x485
685C	Optimal Point binary search, math	2900	x585
685B	Kay and Snowflake data structures, dfs and similar, dp, trees	1900	x4168
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4252
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	x188
683D	Chocolate Bar *special problem, math	1400	x323
683C	Symmetric Difference *special problem	1600	x322
683B	The Teacher of Physical Education *special problem	1600	x317
682E	Alyona and Triangles geometry, two pointers	2600	x669
682D	Alyona and Strings dp, strings	1900	x3337