Problemset - Codeforces

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Educational Codeforces Round 75 (Rated for Div. 2)
19:04:44
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dfs and similar

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Problems

#	Name
1089H	Harder Satisfiability 2-sat, dfs and similar, graphs	3500	x56
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x50
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3400	x55
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x56
786D	Rap God data structures, dfs and similar, hashing, strings, trees	3300	x49
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3300	x89
639F	Bear and Chemistry data structures, dfs and similar, graphs, trees	3300	x93
538H	Summer Dichotomy 2-sat, data structures, dfs and similar, greedy	3100	x110
650E	Clockwork Bomb data structures, dfs and similar, dsu, greedy, trees	3100	x299
487E	Tourists data structures, dfs and similar, graphs, trees	3100	x491
855G	Harry Vs Voldemort dfs and similar, dp, graphs, trees	3000	x59
891D	Sloth dfs and similar, dp, graph matchings, trees	3000	x63
251E	Tree and Table dfs and similar, dp, implementation, trees	3000	x77
566C	Logistical Questions dfs and similar, divide and conquer, trees	3000	x107
842E	Nikita and game binary search, dfs and similar, divide and conquer, graphs, trees	3000	x137
1062F	Upgrading Cities dfs and similar, graphs	3000	x142
533A	Berland Miners binary search, data structures, dfs and similar, greedy, trees	3000	x155
504E	Misha and LCP on Tree binary search, dfs and similar, hashing, string suffix structures, trees	3000	x173
176E	Archaeology data structures, dfs and similar, trees	3000	x396
1236F	Alice and the Cactus dfs and similar, graphs, math, probabilities	2900	x19
65E	Harry Potter and Moving Staircases dfs and similar, implementation	2900	x47
1178G	The Awesomest Vertex data structures, dfs and similar	2900	x127
843C	Upgrading Tree constructive algorithms, dfs and similar, graphs, math, trees	2900	x206
679D	Bear and Chase brute force, dfs and similar, graphs, implementation, math, probabilities	2900	x216
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x254
758E	Broken Tree dfs and similar, dp, graphs, greedy, trees	2900	x270
596E	Wilbur and Strings dfs and similar, dp, graphs, strings	2900	x270
508D	Tanya and Password dfs and similar, graphs	2900	x1372
290F	Greedy Petya *special problem, dfs and similar, graphs, greedy	2800	x66
802L	Send the Fool Further! (hard) dfs and similar, dp, math, trees	2800	x101
869D	The Overdosing Ubiquity brute force, dfs and similar, graphs	2800	x104
982F	The Meeting Place Cannot Be Changed dfs and similar, graphs	2800	x112
793E	Problem of offices constructive algorithms, dfs and similar, dp, trees	2800	x146
97E	Leaders dfs and similar, dsu, graphs, trees	2800	x150
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2800	x191
521E	Cycling City dfs and similar, graphs	2800	x197
1036G	Sources and Sinks bitmasks, brute force, dfs and similar	2800	x201
687E	TOF dfs and similar, graphs	2800	x201
240E	Road Repairs dfs and similar, graphs, greedy	2800	x211
348E	Pilgrims dfs and similar, dp, trees	2800	x220
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2800	x234
343E	Pumping Stations brute force, dfs and similar, divide and conquer, flows, graphs, greedy, trees	2800	x245
1111E	Tree data structures, dfs and similar, dp, graphs, trees	2800	x335
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x384
1103C	Johnny Solving constructive algorithms, dfs and similar, graphs, math	2800	x391
163E	e-Government data structures, dfs and similar, dp, strings, trees	2800	x529
19E	Fairy dfs and similar, divide and conquer, dsu	2800	x643
613D	Kingdom and its Cities dfs and similar, divide and conquer, dp, graphs, sortings, trees	2800	x647
555E	Case of Computer Network dfs and similar, graphs, trees	2800	x718
715C	Digit Tree dfs and similar, divide and conquer, dsu, trees	2800	x858
453C	Little Pony and Summer Sun Celebration constructive algorithms, dfs and similar, graphs	2800	x1028
1218H	Function Composition dfs and similar	2700	x50
478E	Wavy numbers brute force, dfs and similar, meet-in-the-middle, sortings	2700	x119
42E	Baldman and the military dfs and similar, graphs, trees	2700	x131
822F	Madness constructive algorithms, dfs and similar, trees	2700	x175
1118F2	Tree Cutting (Hard Version) combinatorics, dfs and similar, dp, trees	2700	x186
1214H	Tiles Placement constructive algorithms, dfs and similar, trees	2700	x189
901D	Weighting a Tree constructive algorithms, dfs and similar, graphs	2700	x208
812D	Sagheer and Kindergarten dfs and similar, graphs, implementation, trees	2700	x238
1033E	Hidden Bipartite Graph binary search, constructive algorithms, dfs and similar, graphs, interactive	2700	x248
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2700	x309
317C	Balance constructive algorithms, dfs and similar, graphs, trees	2700	x333
494D	Birthday data structures, dfs and similar, dp, trees	2700	x361
633G	Yash And Trees bitmasks, data structures, dfs and similar, math, number theory	2700	x386
864F	Cities Excursions dfs and similar, graphs, trees	2700	x395
827D	Best Edge Weight data structures, dfs and similar, graphs, trees	2700	x494
700C	Break Up dfs and similar, graphs	2700	x627
741D	Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths data structures, dfs and similar, trees	2700	x703
316F3	Suns and Rays constructive algorithms, dfs and similar, implementation	2600	x129
81E	Pairs dfs and similar, dp, dsu, graphs, implementation, trees	2600	x180
475E	Strongly Connected City 2 dfs and similar	2600	x204
51F	Caterpillar dfs and similar, dp, graphs, trees	2600	x237
860E	Arkady and a Nobody-men data structures, dfs and similar, trees	2600	x242
1207G	Indie Album data structures, dfs and similar, hashing, string suffix structures, strings, trees	2600	x283
123E	Maze dfs and similar, dp, probabilities, trees	2600	x299
254D	Rats brute force, dfs and similar, graphs, implementation, shortest paths	2600	x308
542D	Superhero's Job dfs and similar, dp, hashing, math, number theory	2600	x346
1016F	Road Projects dfs and similar, dp, trees	2600	x366
825G	Tree Queries dfs and similar, graphs, trees	2600	x378
1209F	Koala and Notebook data structures, dfs and similar, graphs, shortest paths, strings, trees	2600	x418
571C	CNF 2 constructive algorithms, dfs and similar, graphs, greedy	2600	x420
627D	Preorder Test binary search, dfs and similar, dp, graphs, greedy, trees	2600	x428
372D	Choosing Subtree is Fun binary search, data structures, dfs and similar, trees, two pointers	2600	x444
1023F	Mobile Phone Network dfs and similar, dsu, graphs, trees	2600	x446
1147D	Palindrome XOR dfs and similar, graphs	2600	x464
778C	Peterson Polyglot brute force, dfs and similar, dsu, hashing, strings, trees	2600	x568
804D	Expected diameter of a tree binary search, brute force, dfs and similar, dp, sortings, trees	2600	x697
527E	Data Center Drama dfs and similar, graphs	2600	x714
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x720
912E	Prime Gift binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers	2600	x747
573C	Bear and Drawing constructive algorithms, dfs and similar, trees	2600	x755
567E	President and Roads dfs and similar, graphs, hashing, shortest paths	2600	x930
741C	Arpa’s overnight party and Mehrdad’s silent entering constructive algorithms, dfs and similar, graphs	2600	x1221
424E	Colored Jenga dfs and similar, dp, probabilities	2500	x73
316F1	Suns and Rays dfs and similar, implementation	2500	x134
325C	Monsters and Diamonds dfs and similar, graphs, shortest paths	2500	x219
847L	Berland SU Computer Network dfs and similar, hashing, trees	2500	x222
172E	BHTML+BCSS *special problem, dfs and similar, expression parsing	2500	x238
852I	Dating brute force, dfs and similar, graphs, trees	2500	x294
359E	Neatness dfs and similar	2500	x298

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