Problemset - Codeforces

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Educational Codeforces Round 167 (Rated for Div. 2)
17:53:30
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Problems

#	Name
175A	Robot Bicorn Attack brute force, implementation	1400	x2358
174C	Range Increments data structures, greedy	1800	x1072
174B	File List dp, greedy, implementation	1400	x2206
174A	Problem About Equation math	1100	x2740
173E	Camping Groups data structures, sortings	2600	x538
173D	Deputies constructive algorithms, graphs, greedy, implementation	2500	x247
173C	Spiral Maximum brute force, dp	1900	x966
173B	Chamber of Secrets dfs and similar, shortest paths	1800	x2917
173A	Rock-Paper-Scissors implementation, math	1300	x2242
172E	BHTML+BCSS *special problem, dfs and similar, expression parsing	2200	x269
172D	Calendar Reform *special problem, number theory	1500	x1383
172C	Bus *special problem, implementation, sortings	1500	x1131
172B	Pseudorandom Sequence Period *special problem, implementation, number theory	1200	x2695
172A	Phone Code *special problem, brute force, implementation	800	x5957
171H	A polyline *special problem, implementation	1700	x271
171G	Mysterious numbers - 2 *special problem	1600	x904
171F	ucyhf *special problem, brute force, implementation, number theory	1600	x1260
171E	MYSTERIOUS LANGUAGE *special problem	2000	x1424
171D	Broken checker *special problem, brute force	1300	x2540
171C	A Piece of Cake *special problem, implementation	2000	x1061
171B	Star *special problem, combinatorics	1300	x3977
171A	Mysterious numbers - 1 *special problem, constructive algorithms	1200	x4387
169B	Replacing Digits greedy	1100	x3213
169A	Chores sortings	800	x6610
168B	Wizards and Minimal Spell implementation, strings	1700	x1202
168A	Wizards and Demonstration implementation, math	900	x10389
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x550
167D	Wizards and Roads data structures, divide and conquer, graph matchings, graphs, greedy	3000	x192
167C	Wizards and Numbers games, math	2300	x658
167B	Wizards and Huge Prize dp, math, probabilities	1800	x2105
167A	Wizards and Trolleybuses implementation, math	1600	x2015
166E	Tetrahedron dp, math, matrices	1500	x20284
166D	Shoe Store dp, graph matchings, greedy, sortings, two pointers	2500	x348
166C	Median greedy, math, sortings	1500	x6381
166B	Polygons geometry, sortings	2100	x2351
166A	Rank List binary search, implementation, sortings	1100	x17019
165E	Compatible Numbers bitmasks, brute force, dfs and similar, dp	2200	x6352
165D	Beard Graph data structures, dsu, trees	2100	x1599
165C	Another Problem on Strings binary search, brute force, dp, math, strings, two pointers	1600	x11989
165B	Burning Midnight Oil binary search, implementation	1500	x16889
165A	Supercentral Point implementation	1000	x22931
164E	Polycarpus and Tasks	3100	x67
164D	Minimum Diameter binary search, brute force	3100	x230
164C	Machine Programming flows, graphs	2400	x878
164B	Ancient Berland Hieroglyphs two pointers	2000	x451
164A	Variable, or There and Back Again dfs and similar, graphs	1700	x985
163E	e-Government data structures, dfs and similar, dp, strings, trees	2800	x1545
163D	Large Refrigerator brute force	2900	x483
163C	Conveyor sortings, two pointers	2100	x538
163B	Lemmings binary search	2000	x1048
163A	Substring and Subsequence dp	1700	x2633
162J	Brackets *special problem	1800	x91
162I	Truncatable primes *special problem	2000	x75
162H	Alternating case *special problem	1800	x215
162G	Non-decimal sum *special problem	2000	x59
162F	Factorial zeros *special problem	1800	x197
162E	HQ9+ *special problem	1800	x175
162D	Remove digits *special problem	1900	x226
162C	Prime factorization *special problem	1800	x775
162B	Binary notation *special problem	1800	x309
162A	Pentagonal numbers *special problem, implementation	1100	x797
161E	Polycarpus the Safecracker brute force, dp	2500	x463
161D	Distance in Tree dfs and similar, dp, trees	1800	x13906
161C	Abracadabra divide and conquer	2400	x641
161B	Discounts constructive algorithms, greedy, sortings	1700	x1931
161A	Dress'em in Vests! binary search, brute force, greedy, two pointers	1300	x4706
160E	Buses and People binary search, data structures, sortings	2400	x579
160D	Edges in MST dfs and similar, dsu, graphs, sortings	2300	x2404
160C	Find Pair implementation, math, sortings	1700	x3391
160B	Unlucky Ticket greedy, sortings	1100	x13688
160A	Twins greedy, sortings	900	x112833
159E	Zebra Tower *special problem, data structures, greedy, sortings	1700	x994
159D	Palindrome pairs *special problem, brute force, dp, strings	1500	x4267
159C	String Manipulation 1.0 *special problem, binary search, brute force, data structures, strings	1400	x2939
159B	Matchmaker *special problem, greedy, sortings	1100	x3704
159A	Friends or Not *special problem, greedy, implementation	1400	x2464
158E	Phone Talks *special problem, dp, sortings	1900	x1453
158D	Ice Sculptures *special problem, brute force, number theory	1300	x6193
158C	Cd and pwd commands *special problem, data structures, implementation	1400	x8983
158B	Taxi *special problem, greedy, implementation	1100	x83731
158A	Next Round *special problem, implementation	800	x237077
157B	Trace geometry, sortings	1000	x12954
157A	Game Outcome brute force	800	x7455
156E	Mrs. Hudson's Pancakes brute force, dp	3000	x161
156D	Clues combinatorics, graphs	2500	x1500
156C	Cipher combinatorics, dp	2000	x2308
156B	Suspects constructive algorithms, data structures, implementation	1600	x2197
156A	Message brute force	1700	x3015
155B	Combination greedy, sortings	1100	x10073
155A	I_love_\%username\% brute force	800	x72023
154E	Martian Colony geometry	3000	x92
154D	Flatland Fencing games, math	2400	x419
154C	Double Profiles graphs, hashing, sortings	2300	x2712
154B	Colliders math, number theory	1600	x4369
154A	Hometask greedy	1600	x4007
153E	Euclidean Distance *special problem	2100	x75
153D	Date Change *special problem	2000	x82
153C	Caesar Cipher *special problem	2200	x370
153B	Binary notation *special problem	1800	x154
153A	A + B *special problem	1600	x765