Problemset - Codeforces

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Codeforces Round 940 (Div. 2) and CodeCraft-23
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Problems

#	Name
1423B	Valuable Paper binary search, flows, graph matchings, graphs	1900	x1758
208C	Police Station dp, graphs, shortest paths	1900	x1774
41E	3-cycles constructive algorithms, graphs, greedy	1900	x1887
909E	Coprocessor dfs and similar, dp, graphs, greedy	1900	x1977
949C	Data Center Maintenance dfs and similar, graphs	1900	x1979
729E	Subordinates constructive algorithms, data structures, graphs, greedy, sortings	1900	x2129
1141G	Privatization of Roads in Treeland binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	1900	x2180
327D	Block Tower constructive algorithms, dfs and similar, graphs	1900	x2187
228E	The Road to Berland is Paved With Good Intentions 2-sat, dfs and similar, dsu, graphs	1900	x2303
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x2430
1887B	Time Travel binary search, graphs, shortest paths	1900	x2637
374C	Inna and Dima dfs and similar, dp, graphs, implementation	1900	x2640
1866C	Completely Searching for Inversions dfs and similar, dp, graphs	1900	x2825
780D	Innokenty and a Football League 2-sat, graphs, greedy, implementation, shortest paths, strings	1900	x2837
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x2852
1133F2	Spanning Tree with One Fixed Degree constructive algorithms, dfs and similar, dsu, graphs, greedy	1900	x2953
500D	New Year Santa Network combinatorics, dfs and similar, graphs, trees	1900	x3026
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3091
550D	Regular Bridge constructive algorithms, graphs, implementation	1900	x3233
1787D	Game on Axis combinatorics, dfs and similar, dsu, graphs, implementation	1900	x3242
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3292
1738D	Permutation Addicts constructive algorithms, data structures, dfs and similar, dsu, graphs, trees	1900	x3307
1677C	Tokitsukaze and Two Colorful Tapes constructive algorithms, dfs and similar, graphs, greedy	1900	x3383
1041E	Tree Reconstruction constructive algorithms, data structures, graphs, greedy	1900	x3496
832D	Misha, Grisha and Underground dfs and similar, graphs, trees	1900	x3588
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x3643
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3661
144D	Missile Silos data structures, dfs and similar, graphs, shortest paths	1900	x3762
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x3802
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x3889
558C	Amr and Chemistry brute force, graphs, greedy, math, shortest paths	1900	x3911
1105D	Kilani and the Game dfs and similar, graphs, implementation, shortest paths	1900	x3969
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x3995
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x4287
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4342
739B	Alyona and a tree binary search, data structures, dfs and similar, graphs, trees	1900	x4414
1679D	Toss a Coin to Your Graph... binary search, dfs and similar, dp, graphs	1900	x4541
1276B	Two Fairs combinatorics, dfs and similar, dsu, graphs	1900	x4661
1601B	Frog Traveler data structures, dfs and similar, dp, graphs, shortest paths, two pointers	1900	x4741
1651D	Nearest Excluded Points binary search, data structures, dfs and similar, graphs, shortest paths	1900	x4788
1739D	Reset K Edges binary search, data structures, dfs and similar, graphs, greedy, trees	1900	x4835
1715D	2+ doors 2-sat, bitmasks, graphs, greedy	1900	x4888
1439A2	Binary Table (Hard Version) constructive algorithms, graphs, greedy, implementation	1900	x4938
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x4961
1367E	Necklace Assembly brute force, dfs and similar, dp, graphs, greedy, number theory	1900	x5116
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x5497
1095F	Make It Connected dsu, graphs, greedy	1900	x5787
1436D	Bandit in a City binary search, dfs and similar, graphs, greedy, trees	1900	x5821
1272E	Nearest Opposite Parity dfs and similar, graphs, shortest paths	1900	x5824
25C	Roads in Berland graphs, shortest paths	1900	x5824
463D	Gargari and Permutations dfs and similar, dp, graphs, implementation	1900	x5900
1307D	Cow and Fields binary search, data structures, dfs and similar, graphs, greedy, shortest paths, sortings	1900	x5965
1470B	Strange Definition bitmasks, graphs, hashing, math, number theory	1900	x6127
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6278
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x6841
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x6948
1369D	TediousLee dp, graphs, greedy, math, trees	1900	x8237
1328E	Tree Queries dfs and similar, graphs, trees	1900	x8745
25D	Roads not only in Berland dsu, graphs, trees	1900	x10249
20C	Dijkstra? graphs, shortest paths	1900	x29622
638D	Three-dimensional Turtle Super Computer brute force, dfs and similar, graphs	1800	x682
638C	Road Improvement *special problem, dfs and similar, graphs, greedy, trees	1800	x1478
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2047
863C	1-2-3 graphs, implementation	1800	x2400
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2504
436C	Dungeons and Candies dsu, graphs, greedy, trees	1800	x2577
645D	Robot Rapping Results Report binary search, dp, graphs	1800	x2697
1725M	Moving Both Hands dp, graphs, shortest paths	1800	x2829
1666L	Labyrinth dfs and similar, graphs	1800	x2967
263D	Cycle in Graph dfs and similar, graphs	1800	x3223
1082D	Maximum Diameter Graph constructive algorithms, graphs, implementation	1800	x3540
989C	A Mist of Florescence constructive algorithms, graphs	1800	x3648
700B	Connecting Universities dfs and similar, dp, graphs, trees	1800	x3764
1062D	Fun with Integers dfs and similar, graphs, implementation, math	1800	x3856
1468J	Road Reform dsu, graphs, greedy	1800	x3865
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x3873
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4107
743D	Chloe and pleasant prizes dfs and similar, dp, graphs, trees	1800	x4240
623A	Graph and String constructive algorithms, graphs	1800	x4354
1286B	Numbers on Tree constructive algorithms, data structures, dfs and similar, graphs, greedy, trees	1800	x4374
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x4885
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x4930
404C	Restore Graph dfs and similar, graphs, sortings	1800	x4987
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1800	x5118
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5278
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x5322
721C	Journey dp, graphs	1800	x5656
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x5719
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x5720
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x5992
1304D	Shortest and Longest LIS constructive algorithms, graphs, greedy, two pointers	1800	x6015
61D	Eternal Victory dfs and similar, graphs, greedy, shortest paths, trees	1800	x6222
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x6574
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x6657
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x6671
1334D	Minimum Euler Cycle constructive algorithms, graphs, greedy, implementation	1800	x6972
1063B	Labyrinth graphs, shortest paths	1800	x7023
1296E1	String Coloring (easy version) constructive algorithms, dp, graphs, greedy, sortings	1800	x7062
1244D	Paint the Tree brute force, constructive algorithms, dp, graphs, implementation, trees	1800	x7203
1517D	Explorer Space dp, graphs, shortest paths	1800	x7285