Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
38:08:21
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Problems

#	Name
234B	Reading sortings	1000	x7157
234A	Lefthanders and Righthanders implementation	1200	x4491
233B	Non-square Equation binary search, brute force, math	1400	x7580
233A	Perfect Permutation implementation, math	800	x43378
232E	Quick Tortoise bitmasks, divide and conquer, dp	3000	x699
232D	Fence binary search, data structures, string suffix structures	2900	x479
232C	Doe Graphs constructive algorithms, divide and conquer, dp, graphs, shortest paths	2600	x291
232B	Table bitmasks, combinatorics, dp, math	1900	x1484
232A	Cycles binary search, constructive algorithms, graphs, greedy	1600	x2575
231E	Cactus data structures, dfs and similar, dp, graphs, trees	2100	x1919
231D	Magic Box brute force, geometry	1600	x4118
231C	To Add or Not to Add binary search, sortings, two pointers	1600	x8709
231B	Magic, Wizardry and Wonders constructive algorithms, greedy	1500	x3634
231A	Team brute force, greedy	800	x338310
230B	T-primes binary search, implementation, math, number theory	1300	x77625
230A	Dragons greedy, sortings	1000	x81103
229E	Gifts combinatorics, dp, math, probabilities	2600	x469
229D	Towers dp, greedy, two pointers	2100	x2288
229C	Triangles combinatorics, graphs, math	1900	x1649
229B	Planets binary search, data structures, graphs, shortest paths	1700	x4776
229A	Shifts brute force, two pointers	1500	x3539
228E	The Road to Berland is Paved With Good Intentions 2-sat, dfs and similar, dsu, graphs	1900	x2506
228D	Zigzag data structures	2100	x386
228C	Fractal Detector dp, hashing	2000	x469
228B	Two Tables brute force, implementation	1400	x3473
228A	Is your horseshoe on the other hoof? implementation	800	x113594
227B	Effective Approach implementation	1100	x28541
227A	Where do I Turn? geometry	1300	x4237
226E	Noble Knight's Path data structures, trees	2900	x465
226D	The table constructive algorithms, greedy	2100	x978
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x915
226B	Naughty Stone Piles greedy	1900	x1569
226A	Flying Saucer Segments math	1400	x4022
225E	Unsolvable math, number theory	2100	x817
225D	Snake bitmasks, dfs and similar, graphs, implementation	2200	x950
225C	Barcode dp, matrices	1700	x9266
225B	Well-known Numbers binary search, greedy, number theory	1600	x3170
225A	Dice Tower constructive algorithms, greedy	1100	x11869
224B	Array bitmasks, implementation, two pointers	1500	x7377
224A	Parallelepiped brute force, geometry, math	1100	x27166
223E	Planar Graph flows, geometry, graphs	3000	x192
223D	Spider geometry, graphs	3000	x71
223C	Partial Sums combinatorics, math, number theory	1900	x1592
223B	Two Strings data structures, dp, strings	1900	x1825
223A	Bracket Sequence data structures, expression parsing, implementation	1700	x2551
222E	Decoding Genome dp, matrices	1900	x2867
222D	Olympiad binary search, greedy, sortings, two pointers	1900	x2174
222C	Reducing Fractions implementation, math, number theory, sortings	1800	x2288
222B	Cosmic Tables data structures, implementation	1300	x6150
222A	Shooshuns and Sequence brute force, implementation	1200	x10881
221B	Little Elephant and Numbers implementation	1300	x4605
221A	Little Elephant and Function implementation, math	1000	x15390
220E	Little Elephant and Inversions data structures, two pointers	2400	x1427
220D	Little Elephant and Triangle geometry, math	2500	x286
220C	Little Elephant and Shifts data structures	2100	x948
220B	Little Elephant and Array constructive algorithms, data structures	1800	x10531
220A	Little Elephant and Problem implementation, sortings	1300	x12060
219E	Parking Lot data structures	2200	x621
219D	Choosing Capital for Treeland dfs and similar, dp, graphs, trees	1700	x9744
219C	Color Stripe brute force, dp, greedy	1600	x6704
219B	Special Offer! Super Price 999 Bourles! implementation	1400	x5845
219A	k-String implementation, strings	1000	x28327
218B	Airport implementation	1100	x16670
218A	Mountain Scenery brute force, constructive algorithms, implementation	1100	x9557
217E	Alien DNA data structures, dsu, trees	2800	x325
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x252
217C	Formurosa divide and conquer, dp, expression parsing	2600	x340
217B	Blackboard Fibonacci brute force, math	2100	x900
217A	Ice Skating brute force, dfs and similar, dsu, graphs	1200	x21402
216E	Martian Luck math, number theory	2000	x591
216D	Spider's Web binary search, sortings, two pointers	1700	x1359
216C	Hiring Staff greedy	1800	x1853
216B	Forming Teams dfs and similar, implementation	1700	x6446
216A	Tiling with Hexagons implementation, math	1200	x5046
215E	Periodical Numbers combinatorics, dp, number theory	2100	x578
215D	Hot Days greedy	1900	x1608
215C	Crosses brute force, implementation	2100	x672
215B	Olympic Medal greedy, math	1300	x5623
215A	Bicycle Chain brute force, implementation	900	x14683
214B	Hometask brute force, constructive algorithms, greedy, math	1600	x5017
214A	System of Equations brute force	800	x36172
213E	Two Permutations data structures, hashing, strings	2700	x842
213D	Stars constructive algorithms, geometry	2300	x341
213C	Relay Race dp	2000	x2912
213B	Numbers combinatorics, dp	1900	x1791
213A	Game dfs and similar, greedy	1700	x1727
212E	IT Restaurants dfs and similar, dp, trees	1500	x1780
212D	Cutting a Fence binary search, data structures, dsu	2500	x519
212C	Cowboys combinatorics, dp, math	2100	x389
212B	Polycarpus is Looking for Good Substrings bitmasks, hashing, implementation	2300	x335
212A	Privatization flows, graphs	3000	x206
209C	Trails and Glades constructive algorithms, dsu, graphs, greedy	2400	x756
209B	Pixels constructive algorithms, math	2100	x401
209A	Multicolored Marbles dp, math	1600	x2389
208E	Blood Cousins binary search, data structures, dfs and similar, trees	2100	x6995
208D	Prizes, Prizes, more Prizes implementation	1200	x7621
208C	Police Station dp, graphs, shortest paths	1900	x1913
208B	Solitaire dfs and similar, dp	1900	x1366
208A	Dubstep strings	900	x90316
207D9	The Beaver's Problem - 3	1800	x88