Problemset - Codeforces

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Codeforces Round (Div. 2)
29:17:29
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Problems

#	Name
770D	Draw Brackets! *special problem, implementation	1400	x1569
770C	Online Courses In BSU *special problem, dfs and similar, graphs, implementation	1500	x2577
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1700	x2268
769C	Cycle In Maze *special problem, dfs and similar, graphs, greedy, shortest paths	1700	x2190
768C	Jon Snow and his Favourite Number brute force, dp, implementation, sortings	1800	x3781
768B	Code For 1 constructive algorithms, dfs and similar, divide and conquer	1600	x5872
766C	Mahmoud and a Message brute force, dp, greedy, strings	1700	x4356
765D	Artsem and Saunders constructive algorithms, dsu, math	1700	x2457
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x10320
762B	USB vs. PS/2 greedy, implementation, sortings, two pointers	1400	x7838
762A	k-th divisor math, number theory	1400	x18896
761D	Dasha and Very Difficult Problem binary search, brute force, constructive algorithms, greedy, sortings	1700	x3951
761C	Dasha and Password brute force, dp, implementation	1500	x5856
760B	Frodo and pillows binary search, greedy	1500	x6392
758C	Unfair Poll binary search, constructive algorithms, implementation, math	1700	x3847
757B	Bash's Big Day greedy, math, number theory	1400	x10063
756B	Travel Card binary search, dp	1600	x3424
756A	Pavel and barbecue constructive algorithms, dfs and similar	1700	x3007
753B	Interactive Bulls and Cows (Easy) brute force, constructive algorithms, implementation	1600	x1182
750C	New Year and Rating binary search, greedy, math	1600	x6525
749C	Voting greedy, implementation, two pointers	1500	x5937
748C	Santa Claus and Robot constructive algorithms, math	1400	x4568
748B	Santa Claus and Keyboard Check implementation, strings	1500	x5302
747E	Comments dfs and similar, expression parsing, implementation, strings	1700	x1948
747D	Winter Is Coming dp, greedy, sortings	1800	x3092
746D	Green and Black Tea constructive algorithms, greedy, math	1500	x5017
746C	Tram constructive algorithms, implementation, math	1600	x3698
745B	Hongcow Solves A Puzzle implementation	1400	x3726
744A	Hongcow Builds A Nation dfs and similar, graphs	1500	x8164
743D	Chloe and pleasant prizes dfs and similar, dp, graphs, trees	1800	x4277
743C	Vladik and fractions brute force, constructive algorithms, math, number theory	1500	x12066
742B	Arpa’s obvious problem and Mehrdad’s terrible solution brute force, math, number theory	1500	x9144
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x5177
741A	Arpa's loud Owf and Mehrdad's evil plan dfs and similar, math	1600	x5415
739A	Alyona and mex constructive algorithms, greedy	1700	x7743
735D	Taxes math, number theory	1600	x13109
735C	Tennis Championship combinatorics, constructive algorithms, greedy, math	1600	x7408
734D	Anton and Chess implementation	1700	x3712
734C	Anton and Making Potions binary search, dp, greedy, two pointers	1600	x5312
733D	Kostya the Sculptor data structures, hashing	1600	x4155
733C	Epidemic in Monstropolis constructive algorithms, dp, greedy, two pointers	1800	x3317
732D	Exams binary search, greedy, sortings	1700	x5452
731C	Socks dfs and similar, dsu, graphs, greedy	1600	x6867
730G	Car Repair Shop implementation	1600	x2118
730B	Minimum and Maximum constructive algorithms, interactive	1800	x2405
730A	Toda 2 greedy, implementation	1800	x1559
729D	Sea Battle constructive algorithms, greedy, math	1700	x3643
729C	Road to Cinema binary search, greedy, sortings	1700	x3886
727D	T-shirts Distribution constructive algorithms, flows, greedy	1800	x1811
727C	Guess the Array constructive algorithms, interactive, math	1400	x7098
727B	Bill Total Value expression parsing, implementation, strings	1600	x1980
725D	Contest Balloons data structures, greedy	1800	x2770
725C	Hidden Word brute force, constructive algorithms, implementation, strings	1600	x2615
724C	Ray Tracing greedy, hashing, implementation, math, number theory, sortings	1800	x2126
724B	Batch Sort brute force, greedy, implementation, math	1500	x3995
723D	Lakes in Berland dfs and similar, dsu, graphs, greedy, implementation	1600	x6894
723C	Polycarp at the Radio greedy	1600	x4573
722C	Destroying Array data structures, dsu	1600	x9124
721C	Journey dp, graphs	1800	x5777
719B	Anatoly and Cockroaches greedy	1400	x8422
718A	Efim and Strange Grade dp, implementation, math	1700	x4384
715A	Plus and Square Root constructive algorithms, math	1600	x5572
713A	Sonya and Queries data structures, implementation	1400	x8408
712C	Memory and De-Evolution greedy, math	1600	x5744
711C	Coloring Trees dp	1700	x7949
711B	Chris and Magic Square constructive algorithms, implementation	1400	x8395
710C	Magic Odd Square constructive algorithms, math	1500	x5049
710B	Optimal Point on a Line brute force, sortings	1400	x8667
709B	Checkpoints greedy, implementation, sortings	1500	x4718
707C	Pythagorean Triples math, number theory	1500	x12429
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x9728
706C	Hard problem dp, strings	1600	x15911
704A	Thor brute force, data structures, implementation	1600	x9067
703B	Mishka and trip implementation, math	1400	x5652
702C	Cellular Network binary search, implementation, two pointers	1500	x13914
702B	Powers of Two brute force, data structures, implementation, math	1500	x11520
701C	They Are Everywhere binary search, strings, two pointers	1500	x14314
700B	Connecting Universities dfs and similar, dp, graphs, trees	1800	x3880
699B	One Bomb implementation	1400	x7554
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5658
698A	Vacations dp	1400	x29419
697B	Barnicle brute force, implementation, math, strings	1400	x5688
696B	Puzzles dfs and similar, math, probabilities, trees	1700	x3420
696A	Lorenzo Von Matterhorn brute force, data structures, implementation, trees	1500	x6022
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5400
691C	Exponential notation implementation, strings	1800	x2560
691B	s-palindrome implementation, strings	1600	x4775
690E1	Photographs (I)	1800	x673
690D2	The Wall (medium) combinatorics	1800	x1222
690C2	Brain Network (medium) dfs and similar, graphs, trees	1500	x3648
690B1	Recover Polygon (easy)	1700	x934
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x5078
689B	Mike and Shortcuts dfs and similar, graphs, greedy, shortest paths	1600	x5656
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5226
687B	Remainders Game chinese remainder theorem, math, number theory	1800	x5706
687A	NP-Hard Problem dfs and similar, graphs	1500	x14007
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4161
683F	Reformat the String *special problem	1800	x146
683E	Hammer throwing *special problem	1800	x187
683D	Chocolate Bar *special problem, math	1400	x322