Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
40:37:15
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Problems

#	Name
1082C	Multi-Subject Competition greedy, sortings	1600	x5501
501C	Misha and Forest constructive algorithms, data structures, greedy, sortings, trees	1500	x5506
313C	Ilya and Matrix constructive algorithms, greedy, implementation, sortings	1400	x5515
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5523
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5523
1413C	Perform Easily binary search, brute force, dp, implementation, sortings, two pointers	1900	x5525
994B	Knights of a Polygonal Table greedy, implementation, sortings	1400	x5527
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5544
558E	A Simple Task data structures, sortings, strings	2300	x5560
769A	Year of University Entrance *special problem, implementation, sortings	800	x5566
203C	Photographer greedy, sortings	1400	x5568
1102E	Monotonic Renumeration combinatorics, sortings	1700	x5589
1251D	Salary Changing binary search, greedy, sortings	1900	x5614
1056D	Decorate Apple Tree constructive algorithms, dfs and similar, dp, graphs, greedy, sortings, trees	1600	x5614
1424G	Years data structures, sortings	1300	x5635
1175D	Array Splitting greedy, sortings	1900	x5639
525C	Ilya and Sticks greedy, math, sortings	1600	x5695
12C	Fruits greedy, implementation, sortings	1100	x5731
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5767
1801B	Buying gifts data structures, greedy, sortings	1800	x5776
439D	Devu and his Brother binary search, sortings, ternary search, two pointers	1700	x5781
1342D	Multiple Testcases binary search, constructive algorithms, data structures, greedy, sortings, two pointers	1900	x5828
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x5861
471B	MUH and Important Things implementation, sortings	1300	x5881
1156C	Match Points binary search, greedy, sortings, ternary search, two pointers	2000	x5883
808C	Tea Party constructive algorithms, greedy, sortings	1400	x5953
291A	Spyke Talks *special problem, implementation, sortings	800	x5977
1307D	Cow and Fields binary search, data structures, dfs and similar, graphs, greedy, shortest paths, sortings	1900	x6015
1154E	Two Teams data structures, implementation, sortings	1800	x6022
1444B	Divide and Sum combinatorics, math, sortings	1900	x6030
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6087
1156B	Ugly Pairs dfs and similar, greedy, implementation, sortings, strings	1800	x6126
1012A	Photo of The Sky brute force, implementation, math, sortings	1500	x6147
659B	Qualifying Contest constructive algorithms, sortings	1300	x6176
976C	Nested Segments greedy, implementation, sortings	1500	x6269
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6277
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6330
166C	Median greedy, math, sortings	1500	x6336
257A	Sockets greedy, implementation, sortings	1100	x6374
1870D	Prefix Purchase greedy, implementation, sortings	1800	x6387
1475G	Strange Beauty dp, math, number theory, sortings	1900	x6387
1000C	Covered Points Count data structures, implementation, sortings	1700	x6419
350C	Bombs greedy, implementation, sortings	1600	x6429
811B	Vladik and Complicated Book implementation, sortings	1200	x6436
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6446
379C	New Year Ratings Change greedy, sortings	1400	x6493
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6512
169A	Chores sortings	800	x6546
830A	Office Keys binary search, brute force, dp, greedy, sortings	1800	x6548
381B	Sereja and Stairs greedy, implementation, sortings	1100	x6574
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x6595
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6623
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6658
493C	Vasya and Basketball binary search, brute force, data structures, implementation, sortings, two pointers	1600	x6667
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x6701
572B	Order Book data structures, greedy, implementation, sortings	1300	x6739
981B	Businessmen Problems sortings	1000	x6749
1158A	The Party and Sweets binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers	1500	x6763
484B	Maximum Value binary search, math, sortings, two pointers	2100	x6768
79B	Colorful Field implementation, sortings	1400	x6776
967B	Watering System math, sortings	1000	x6820
254A	Cards with Numbers constructive algorithms, sortings	1200	x6830
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6953
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x6954
234B	Reading sortings	1000	x6968
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7018
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7034
137C	History sortings	1500	x7051
557B	Pasha and Tea constructive algorithms, implementation, math, sortings	1500	x7075
1296E1	String Coloring (easy version) constructive algorithms, dp, graphs, greedy, sortings	1800	x7086
1121A	Technogoblet of Fire implementation, sortings	1100	x7087
1029C	Maximal Intersection greedy, math, sortings	1600	x7163
632C	The Smallest String Concatenation sortings, strings	1700	x7184
1257D	Yet Another Monster Killing Problem binary search, data structures, dp, greedy, sortings, two pointers	1700	x7199
1061B	Views Matter greedy, implementation, sortings	1400	x7213
1619D	New Year's Problem binary search, greedy, sortings	1800	x7230
581C	Developing Skills implementation, math, sortings	1400	x7239
1420D	Rescue Nibel! combinatorics, data structures, sortings	1800	x7299
424B	Megacity binary search, greedy, implementation, sortings	1200	x7323
960B	Minimize the error data structures, greedy, sortings	1500	x7354
135A	Replacement greedy, implementation, sortings	1300	x7424
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x7449
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7465
762B	USB vs. PS/2 greedy, implementation, sortings, two pointers	1400	x7483
863B	Kayaking brute force, greedy, sortings	1500	x7535
1409E	Two Platforms binary search, dp, sortings, two pointers	1800	x7540
479B	Towers brute force, constructive algorithms, greedy, implementation, sortings	1400	x7541
1101C	Division and Union sortings	1500	x7557
1136C	Nastya Is Transposing Matrices constructive algorithms, sortings	1500	x7609
845A	Chess Tourney implementation, sortings	1100	x7626
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x7640
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x7675
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7687
686B	Little Robber Girl's Zoo constructive algorithms, implementation, sortings	1100	x7696
1472E	Correct Placement binary search, data structures, dp, sortings, two pointers	1700	x7705
299A	Ksusha and Array brute force, number theory, sortings	1000	x7718
1165E	Two Arrays and Sum of Functions greedy, math, sortings	1600	x7784
624B	Making a String greedy, sortings	1100	x7842
845C	Two TVs data structures, greedy, sortings	1500	x7861
1367D	Task On The Board constructive algorithms, greedy, implementation, sortings	1800	x7962