Problemset - Codeforces

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Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
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Problems

#	Name
169B	Replacing Digits greedy	1100	x3278
169A	Chores sortings	800	x6946
168B	Wizards and Minimal Spell implementation, strings	1700	x1217
168A	Wizards and Demonstration implementation, math	900	x10530
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x578
167D	Wizards and Roads data structures, divide and conquer, graph matchings, graphs, greedy	3000	x193
167C	Wizards and Numbers games, math	2300	x672
167B	Wizards and Huge Prize dp, math, probabilities	1800	x2149
167A	Wizards and Trolleybuses implementation, math	1600	x2037
166E	Tetrahedron dp, math, matrices	1500	x21031
166D	Shoe Store dp, graph matchings, greedy, sortings, two pointers	2500	x357
166C	Median greedy, math, sortings	1500	x6487
166B	Polygons geometry, sortings	2100	x2403
166A	Rank List binary search, implementation, sortings	1100	x17626
165E	Compatible Numbers bitmasks, brute force, dfs and similar, dp	2200	x6784
165D	Beard Graph data structures, dsu, trees	2100	x1643
165C	Another Problem on Strings binary search, brute force, dp, math, strings, two pointers	1600	x12244
165B	Burning Midnight Oil binary search, implementation	1500	x17817
165A	Supercentral Point implementation	1000	x23505
164E	Polycarpus and Tasks	3100	x67
164D	Minimum Diameter binary search, brute force	3100	x244
164C	Machine Programming flows, graphs	2400	x896
164B	Ancient Berland Hieroglyphs two pointers	2000	x453
164A	Variable, or There and Back Again dfs and similar, graphs	1700	x1010
163E	e-Government data structures, dfs and similar, dp, strings, trees	2800	x1705
163D	Large Refrigerator brute force	2900	x505
163C	Conveyor sortings, two pointers	2100	x541
163B	Lemmings binary search	2000	x1058
163A	Substring and Subsequence dp	1700	x2705
162J	Brackets *special problem	1800	x95
162I	Truncatable primes *special problem	2000	x77
162H	Alternating case *special problem	1800	x220
162G	Non-decimal sum *special problem	2000	x64
162F	Factorial zeros *special problem	1800	x202
162E	HQ9+ *special problem	1800	x178
162D	Remove digits *special problem	1900	x228
162C	Prime factorization *special problem	1800	x789
162B	Binary notation *special problem	1800	x313
162A	Pentagonal numbers *special problem, implementation	1100	x803
161E	Polycarpus the Safecracker brute force, dp	2500	x468
161D	Distance in Tree dfs and similar, dp, trees	1800	x14784
161C	Abracadabra divide and conquer	2400	x651
161B	Discounts constructive algorithms, greedy, sortings	1700	x1957
161A	Dress'em in Vests! binary search, brute force, greedy, two pointers	1300	x4892
160E	Buses and People binary search, data structures, sortings	2400	x587
160D	Edges in MST dfs and similar, dsu, graphs, sortings	2300	x2512
160C	Find Pair implementation, math, sortings	1700	x3450
160B	Unlucky Ticket greedy, sortings	1100	x13968
160A	Twins greedy, sortings	900	x117187
159E	Zebra Tower *special problem, data structures, greedy, sortings	1700	x997
159D	Palindrome pairs *special problem, brute force, dp, strings	1500	x4305
159C	String Manipulation 1.0 *special problem, binary search, brute force, data structures, strings	1400	x2986
159B	Matchmaker *special problem, greedy, sortings	1100	x3786
159A	Friends or Not *special problem, greedy, implementation	1400	x2482
158E	Phone Talks *special problem, dp, sortings	1900	x1460
158D	Ice Sculptures *special problem, brute force, number theory	1300	x6241
158C	Cd and pwd commands *special problem, data structures, implementation	1400	x9176
158B	Taxi *special problem, greedy, implementation	1100	x86467
158A	Next Round *special problem, implementation	800	x247968
157B	Trace geometry, sortings	1000	x13178
157A	Game Outcome brute force	800	x7587
156E	Mrs. Hudson's Pancakes brute force, dp	3000	x162
156D	Clues combinatorics, graphs	2500	x1576
156C	Cipher combinatorics, dp	2000	x2397
156B	Suspects constructive algorithms, data structures, implementation	1600	x2229
156A	Message brute force	1700	x3040
155B	Combination greedy, sortings	1100	x10183
155A	I_love_\%username\% brute force	800	x75264
154E	Martian Colony geometry	3000	x97
154D	Flatland Fencing games, math	2400	x430
154C	Double Profiles graphs, hashing, sortings	2300	x2795
154B	Colliders math, number theory	1600	x4618
154A	Hometask greedy	1600	x4047
153E	Euclidean Distance *special problem	2100	x79
153D	Date Change *special problem	2000	x82
153C	Caesar Cipher *special problem	2200	x388
153B	Binary notation *special problem	1800	x156
153A	A + B *special problem	1600	x819
152E	Garden bitmasks, dp, graphs, trees	2500	x481
152D	Frames brute force	2600	x241
152C	Pocket Book combinatorics	1400	x10590
152B	Steps binary search, implementation	1300	x6688
152A	Marks implementation	900	x16738
151B	Phone Numbers implementation, strings	1200	x6377
151A	Soft Drinking implementation, math	800	x72561
150E	Freezing with Style binary search, data structures, divide and conquer, trees	3000	x842
150D	Mission Impassable dp, strings	2600	x602
150C	Smart Cheater data structures, math, probabilities	2200	x641
150B	Quantity of Strings combinatorics, dfs and similar, graphs, math	1600	x4146
150A	Win or Freeze games, math, number theory	1400	x7777
149E	Martian Strings string suffix structures, strings	2300	x2270
149D	Coloring Brackets dp	1900	x3826
149C	Division into Teams greedy, math, sortings	1500	x5377
149B	Martian Clock implementation	1600	x2258
149A	Business trip greedy, implementation, sortings	900	x39602
148E	Porcelain dp	1900	x4018
148D	Bag of mice dp, games, math, probabilities	1800	x7198
148C	Terse princess constructive algorithms, greedy	1700	x3113
148B	Escape implementation, math	1500	x5474
148A	Insomnia cure constructive algorithms, implementation, math	800	x92311