Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
27:46:43
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dfs and similar

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Problems

#	Name
500A	New Year Transportation dfs and similar, graphs, implementation	1000	x50095
520B	Two Buttons dfs and similar, graphs, greedy, implementation, math, shortest paths	1400	x47762
489B	BerSU Ball dfs and similar, dp, graph matchings, greedy, sortings, two pointers	1200	x46370
580C	Kefa and Park dfs and similar, graphs, trees	1500	x39613
115A	Party dfs and similar, graphs, trees	900	x32744
445A	DZY Loves Chessboard dfs and similar, implementation	1200	x28142
1324C	Frog Jumps binary search, data structures, dfs and similar, greedy, implementation	1100	x26858
1593B	Make it Divisible by 25 dfs and similar, dp, greedy, math, math	900	x25090
1829D	Gold Rush brute force, dfs and similar, dp, implementation	1000	x24061
1549B	Gregor and the Pawn Game dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation	800	x23729
1598A	Computer Game brute force, dfs and similar, dp, implementation	800	x22722
1433D	Districts Connection constructive algorithms, dfs and similar	1200	x21699
893C	Rumor dfs and similar, graphs, greedy	1300	x21570
377A	Maze dfs and similar	1600	x21299
217A	Ice Skating brute force, dfs and similar, dsu, graphs	1200	x20336
1020B	Badge brute force, dfs and similar, graphs	1000	x20148
1336A	Linova and Kingdom dfs and similar, dp, greedy, sortings, trees	1600	x19261
977E	Cyclic Components dfs and similar, dsu, graphs	1500	x19156
1490D	Permutation Transformation dfs and similar, divide and conquer, implementation	1200	x18767
1311B	WeirdSort dfs and similar, sortings	1200	x18471
1829E	The Lakes dfs and similar, dsu, graphs, implementation	1100	x18103
277A	Learning Languages dfs and similar, dsu	1400	x18074
977D	Divide by three, multiply by two dfs and similar, math, sortings	1400	x17549
1669G	Fall Down dfs and similar, implementation	1200	x17271
546C	Soldier and Cards brute force, dfs and similar, games	1400	x17035
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x16965
1167C	News Distribution dfs and similar, dsu, graphs	1400	x16947
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x16938
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16335
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16225
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x16182
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x16093
1829F	Forever Winter dfs and similar, graphs, math	1300	x16065
862B	Mahmoud and Ehab and the bipartiteness dfs and similar, graphs, trees	1300	x15902
839C	Journey dfs and similar, dp, graphs, probabilities, trees	1500	x15848
522A	Reposts *special problem, dfs and similar, dp, graphs, trees	1200	x15694
1332C	K-Complete Word dfs and similar, dsu, greedy, implementation, strings	1500	x15577
510C	Fox And Names dfs and similar, graphs, sortings	1600	x15038
771A	Bear and Friendship Condition dfs and similar, dsu, graphs	1500	x14594
1741D	Masha and a Beautiful Tree dfs and similar, divide and conquer, graphs, sortings, trees	1300	x14414
1676G	White-Black Balanced Subtrees dfs and similar, dp, graphs, trees	1300	x14099
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14082
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x14014
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x13891
1106D	Lunar New Year and a Wander data structures, dfs and similar, graphs, greedy, shortest paths	1500	x13887
1528A	Parsa's Humongous Tree dfs and similar, divide and conquer, dp, greedy, trees	1600	x13811
1037D	Valid BFS? dfs and similar, graphs, shortest paths, trees	1700	x13772
687A	NP-Hard Problem dfs and similar, graphs	1500	x13734
1487C	Minimum Ties brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math	1500	x13665
161D	Distance in Tree dfs and similar, dp, trees	1800	x13520
510B	Fox And Two Dots dfs and similar	1500	x13378
948A	Protect Sheep brute force, dfs and similar, graphs, implementation	900	x13357
1263D	Secret Passwords dfs and similar, dsu, graphs	1500	x13227
727A	Transformation: from A to B brute force, dfs and similar, math	1000	x13184
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13052
1033A	King Escape dfs and similar, graphs, implementation	1000	x12916
427C	Checkposts dfs and similar, graphs, two pointers	1700	x12909
1325C	Ehab and Path-etic MEXs constructive algorithms, dfs and similar, greedy, trees	1500	x12869
600E	Lomsat gelral data structures, dfs and similar, dsu, trees	2300	x12604
1830A	Copil Copac Draws Trees dfs and similar, dp, graphs, trees	1400	x12374
1702E	Split Into Two Sets dfs and similar, dsu, graphs	1600	x12270
445B	DZY Loves Chemistry dfs and similar, dsu, greedy	1400	x12078
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x12067
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x11989
1139C	Edgy Trees dfs and similar, dsu, graphs, math, trees	1500	x11965
1303C	Perfect Keyboard dfs and similar, greedy, implementation	1600	x11809
129B	Students and Shoelaces brute force, dfs and similar, graphs, implementation	1200	x11663
1593E	Gardener and Tree brute force, data structures, dfs and similar, greedy, implementation, trees	1600	x11621
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x11618
910A	The Way to Home dfs and similar, dp, greedy, implementation	800	x11356
1143C	Queen dfs and similar, trees	1400	x11199
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x11191
1182B	Plus from Picture dfs and similar, implementation, strings	1300	x10839
441C	Valera and Tubes constructive algorithms, dfs and similar, implementation	1500	x10826
982C	Cut 'em all! dfs and similar, dp, graphs, greedy, trees	1500	x10764
1144F	Graph Without Long Directed Paths dfs and similar, graphs	1700	x10747
1689C	Infected Tree dfs and similar, dp, trees	1600	x10458
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x10451
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x10413
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x10354
598D	Igor In the Museum dfs and similar, graphs, shortest paths	1700	x10319
1833E	Round Dance dfs and similar, dsu, graphs, shortest paths	1600	x10207
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x10085
429A	Xor-tree dfs and similar, trees	1300	x9977
1406C	Link Cut Centroids constructive algorithms, dfs and similar, graphs, trees	1700	x9795
1735C	Phase Shift dfs and similar, dsu, graphs, greedy, implementation, strings	1400	x9545
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x9482
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x9417
1006E	Military Problem dfs and similar, graphs, trees	1600	x9401
369C	Valera and Elections dfs and similar, graphs, trees	1600	x9381
1851E	Nastya and Potions dfs and similar, dp, graphs, sortings	1500	x9370
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9333
919D	Substring dfs and similar, dp, graphs	1700	x9282
1681D	Required Length brute force, dfs and similar, dp, hashing, shortest paths	1700	x9252
246D	Colorful Graph brute force, dfs and similar, graphs	1600	x9182
1761C	Set Construction constructive algorithms, dfs and similar, graphs, greedy	1400	x9146
1324F	Maximum White Subtree dfs and similar, dp, graphs, trees	1800	x9009
920C	Swap Adjacent Elements dfs and similar, greedy, math, sortings, two pointers	1400	x8983
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x8851
780C	Andryusha and Colored Balloons dfs and similar, graphs, greedy, trees	1600	x8843

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