Problemset - Codeforces

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Educational Codeforces Round 170 (Rated for Div. 2)
13 days

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Difficulty: —

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Problems

#	Name
157A	Game Outcome brute force	800	x7585
156E	Mrs. Hudson's Pancakes brute force, dp	3000	x162
156D	Clues combinatorics, graphs	2500	x1575
156C	Cipher combinatorics, dp	2000	x2395
156B	Suspects constructive algorithms, data structures, implementation	1600	x2228
156A	Message brute force	1700	x3039
155B	Combination greedy, sortings	1100	x10182
155A	I_love_\%username\% brute force	800	x75019
154E	Martian Colony geometry	3000	x97
154D	Flatland Fencing games, math	2400	x429
154C	Double Profiles graphs, hashing, sortings	2300	x2791
154B	Colliders math, number theory	1600	x4590
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	x387
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	x10583
152B	Steps binary search, implementation	1300	x6676
152A	Marks implementation	900	x16726
151B	Phone Numbers implementation, strings	1200	x6367
151A	Soft Drinking implementation, math	800	x72371
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	x4135
150A	Win or Freeze games, math, number theory	1400	x7773
149E	Martian Strings string suffix structures, strings	2300	x2267
149D	Coloring Brackets dp	1900	x3810
149C	Division into Teams greedy, math, sortings	1500	x5377
149B	Martian Clock implementation	1600	x2257
149A	Business trip greedy, implementation, sortings	900	x39564
148E	Porcelain dp	1900	x4018
148D	Bag of mice dp, games, math, probabilities	1800	x7193
148C	Terse princess constructive algorithms, greedy	1700	x3109
148B	Escape implementation, math	1500	x5465
148A	Insomnia cure constructive algorithms, implementation, math	800	x92157
147B	Smile House binary search, graphs, matrices	2500	x784
147A	Punctuation implementation, strings	1300	x3628
146B	Lucky Mask brute force, implementation	1300	x4357
146A	Lucky Ticket implementation	800	x15049
145E	Lucky Queries data structures	2400	x3134
145D	Lucky Pair combinatorics, data structures, implementation	2900	x243
145C	Lucky Subsequence combinatorics, dp, math	2100	x1908
145B	Lucky Number 2 constructive algorithms	1800	x2207
145A	Lucky Conversion greedy, implementation	1200	x7135
144E	Competition data structures, greedy	2200	x586
144D	Missile Silos data structures, dfs and similar, graphs, shortest paths	1900	x3966
144C	Anagram Search implementation, strings	1500	x4002
144B	Meeting implementation	1300	x5239
144A	Arrival of the General implementation	800	x95500
143B	Help Kingdom of Far Far Away 2 implementation, strings	1200	x4985
143A	Help Vasilisa the Wise 2 brute force, math	1000	x13818
142E	Help Greg the Dwarf 2 geometry	3000	x80
142D	Help Shrek and Donkey 2 games	2600	x347
142C	Help Caretaker brute force, dp	2300	x919
142B	Help General constructive algorithms, greedy, implementation	1800	x2207
142A	Help Farmer brute force, math	1600	x2612
141E	Clearing Up constructive algorithms, dp, dsu, graphs	2300	x1069
141D	Take-off Ramps graphs, shortest paths	2300	x895
141C	Queue constructive algorithms, greedy, sortings	1800	x2452
141B	Hopscotch geometry, math	1400	x5343
141A	Amusing Joke implementation, sortings, strings	800	x82575
140F	New Year Snowflake geometry, sortings	2600	x367
140E	New Year Garland combinatorics, dp	2600	x938
140D	New Year Contest greedy, sortings	1800	x2210
140C	New Year Snowmen binary search, data structures, greedy	1800	x4358
140B	New Year Cards brute force, greedy, implementation	1800	x1679
140A	New Year Table geometry, math	1700	x4139
139B	Wallpaper implementation, math	1600	x1299
139A	Petr and Book implementation	1000	x30951
138E	Hellish Constraints brute force, dp, two pointers	2900	x174
138D	World of Darkraft dp, games	2500	x491
138C	Mushroom Gnomes - 2 binary search, data structures, probabilities, sortings	2200	x870
138B	Digits Permutations greedy	1900	x1032
138A	Literature Lesson implementation	1600	x2385
137E	Last Chance data structures, implementation, strings	2000	x1217
137D	Palindromes dp, strings	1900	x1510
137C	History sortings	1500	x7182
137B	Permutation greedy	1000	x13645
137A	Postcards and photos implementation	900	x7134
136B	Ternary Logic implementation, math	1100	x4859
136A	Presents implementation	800	x116873
135E	Weak Subsequence combinatorics	3000	x303
135D	Cycle brute force, dfs and similar, implementation	2500	x300
135C	Zero-One constructive algorithms, games, greedy	1900	x1341
135B	Rectangle and Square brute force, geometry, math	1600	x2346
135A	Replacement greedy, implementation, sortings	1300	x7534
134C	Swaps constructive algorithms, graphs, greedy	2200	x472
134B	Pairs of Numbers brute force, dfs and similar, math, number theory	1900	x2019
134A	Average Numbers brute force, implementation	1200	x3954
133B	Unary implementation	1200	x8801
133A	HQ9+ implementation	900	x104917
132E	Bits of merry old England flows, graphs	2700	x533
132D	Constants in the language of Shakespeare constructive algorithms, dp, greedy	2100	x614
132C	Logo Turtle dp	1800	x2323
132B	Piet implementation	2100	x663