Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1525D	Armchairs dp, flows, graph matchings, greedy	1800	x9764
1517D	Explorer Space dp, graphs, shortest paths	1800	x7708
1509C	The Sports Festival dp, greedy	1800	x12539
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x3996
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1801
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x795
1500A	Going Home brute force, hashing, implementation, math	1800	x8821
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x7173
1488B	RBS Deletion *special problem, greedy	1800	x558
1477A	Nezzar and Board constructive algorithms, math, number theory	1800	x5937
1475D	Cleaning the Phone binary search, dp, sortings, two pointers	1800	x10147
1468J	Road Reform dsu, graphs, greedy	1800	x4270
1466E	Apollo versus Pan bitmasks, brute force, math	1800	x7298
1463C	Busy Robot implementation	1800	x5655
1462F	The Treasure of The Segments binary search, data structures, greedy	1800	x6965
1450D	Rating Compression binary search, data structures, greedy, implementation, two pointers	1800	x5474
1446B	Catching Cheaters dp, strings	1800	x7837
1442B	Identify the Operations combinatorics, data structures, dsu, greedy, implementation	1800	x4485
1442A	Extreme Subtraction constructive algorithms, dp, greedy	1800	x8870
1437C	Chef Monocarp dp, flows, graph matchings, greedy, math, sortings	1800	x10486
1426E	Rock, Paper, Scissors brute force, constructive algorithms, flows, greedy, math	1800	x7419
1420D	Rescue Nibel! combinatorics, data structures, sortings	1800	x7580
1409E	Two Platforms binary search, dp, sortings, two pointers	1800	x7826
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x1187
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x9307
1398D	Colored Rectangles dp, greedy, sortings	1800	x11471
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x11392
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6769
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9712
1381B	Unmerge dp	1800	x8903
1367D	Task On The Board constructive algorithms, greedy, implementation, sortings	1800	x8338
1355C	Count Triangles binary search, implementation, math, two pointers	1800	x10647
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x8464
1335E2	Three Blocks Palindrome (hard version) brute force, data structures, dp, two pointers	1800	x8350
1334D	Minimum Euler Cycle constructive algorithms, graphs, greedy, implementation	1800	x7304
1329A	Dreamoon Likes Coloring constructive algorithms, greedy, implementation, math	1800	x9114
1328D	Carousel constructive algorithms, dp, graphs, greedy, math	1800	x13164
1327E	Count The Blocks combinatorics, dp, math	1800	x8942
1326D2	Prefix-Suffix Palindrome (Hard version) binary search, greedy, hashing, string suffix structures, strings	1800	x10153
1324F	Maximum White Subtree dfs and similar, dp, graphs, trees	1800	x9985
1316C	Primitive Primes constructive algorithms, math, ternary search	1800	x7284
1304D	Shortest and Longest LIS constructive algorithms, graphs, greedy, two pointers	1800	x6326
1299B	Aerodynamic geometry	1800	x5247
1296E1	String Coloring (easy version) constructive algorithms, dp, graphs, greedy, sortings	1800	x7483
1295D	Same GCDs math, number theory	1800	x8895
1290B	Irreducible Anagrams binary search, constructive algorithms, data structures, strings, two pointers	1800	x5433
1286B	Numbers on Tree constructive algorithms, data structures, dfs and similar, graphs, greedy, trees	1800	x4705
1286A	Garland dp, greedy, sortings	1800	x8810
1283E	New Year Parties dp, greedy	1800	x6549
1283D	Christmas Trees graphs, greedy, shortest paths	1800	x7791
1282C	Petya and Exam greedy, sortings, two pointers	1800	x4310
1280B	Beingawesomeism implementation, math	1800	x3937
1267L	Lexicography constructive algorithms, strings	1800	x3043
1267J	Just Arrange the Icons greedy, implementation, math	1800	x2813
1254B1	Send Boxes to Alice (Easy Version) constructive algorithms, greedy, math, number theory, ternary search, two pointers	1800	x4659
1252H	Twin Buildings greedy, implementation	1800	x2630
1250J	The Parade binary search, greedy	1800	x2936
1250B	The Feast and the Bus brute force, constructive algorithms, greedy, math	1800	x2609
1249D2	Too Many Segments (hard version) data structures, greedy, sortings	1800	x5243
1249D1	Too Many Segments (easy version) greedy	1800	x5111
1244D	Paint the Tree brute force, constructive algorithms, dp, graphs, implementation, trees	1800	x7564
1227D2	Optimal Subsequences (Hard Version) data structures, greedy	1800	x4333
1225D	Power Products hashing, math, number theory	1800	x7988
1221D	Make The Fence Great Again dp	1800	x9087
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x7250
1208C	Magic Grid constructive algorithms	1800	x6004
1207D	Number Of Permutations combinatorics	1800	x6081
1196E	Connected Component on a Chessboard constructive algorithms, implementation	1800	x3731
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4660
1190B	Tokitsukaze, CSL and Stone Game games	1800	x6437
1187C	Vasya And Array constructive algorithms, greedy, implementation	1800	x6362
1186C	Vus the Cossack and Strings implementation, math	1800	x6110
1179B	Tolik and His Uncle constructive algorithms	1800	x4371
1177B	Digits Sequence (Hard Edition) binary search, divide and conquer, implementation	1800	x2567
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1800	x5276
1172A	Nauuo and Cards greedy, implementation	1800	x4981
1156B	Ugly Pairs dfs and similar, greedy, implementation, sortings, strings	1800	x6221
1154E	Two Teams data structures, implementation, sortings	1800	x6264
1152C	Neko does Maths brute force, math, number theory	1800	x6664
1151C	Problem for Nazar constructive algorithms, math	1800	x5339
1148D	Dirty Deeds Done Dirt Cheap greedy, sortings	1800	x4972
1138B	Circus brute force, greedy, math, strings	1800	x4023
1136D	Nastya Is Buying Lunch greedy	1800	x3811
1133E	K Balanced Teams dp, sortings, two pointers	1800	x5467
1129A2	Toy Train brute force, greedy	1800	x4098
1119D	Frets On Fire binary search, sortings	1800	x4828
1118F1	Tree Cutting (Easy Version) dfs and similar, trees	1800	x5927
1109B	Sasha and One More Name constructive algorithms, hashing, strings	1800	x4358
1108E1	Array and Segments (Easy version) brute force, greedy, implementation	1800	x4534
1107D	Compression dp, implementation, math, number theory	1800	x3725
1096D	Easy Problem dp	1800	x8063
1090D	Similar Arrays constructive algorithms	1800	x2057
1083A	The Fair Nut and the Best Path data structures, dp, trees	1800	x5414
1082D	Maximum Diameter Graph constructive algorithms, graphs, implementation	1800	x3804
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x4051
1077E	Thematic Contests greedy, sortings	1800	x4681
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x5195
1073C	Vasya and Robot binary search, two pointers	1800	x4767
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2665
1066D	Boxes Packing binary search, implementation	1800	x5465