Problemset - Codeforces

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XIX Open Olympiad in Informatics - Final Stage, Day 1 (Unrated, Online Mirror, IOI rules)
2 days

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Problems

#	Name
156D	Clues combinatorics, graphs	2500	x1665
156C	Cipher combinatorics, dp	2000	x2457
156B	Suspects constructive algorithms, data structures, implementation	1600	x2266
156A	Message brute force	1700	x3094
155B	Combination greedy, sortings	1100	x10400
155A	I_love_\%username\% brute force	800	x79566
154E	Martian Colony geometry	3000	x105
154D	Flatland Fencing games, math	2400	x440
154C	Double Profiles graphs, hashing, sortings	2300	x2945
154B	Colliders math, number theory	1600	x5096
154A	Hometask greedy	1600	x4117
153E	Euclidean Distance *special problem	2100	x82
153D	Date Change *special problem	2000	x86
153C	Caesar Cipher *special problem	2200	x394
153B	Binary notation *special problem	1800	x161
153A	A + B *special problem	1600	x890
152E	Garden bitmasks, dp, graphs, trees	2500	x497
152D	Frames brute force	2600	x250
152C	Pocket Book combinatorics	1400	x10888
152B	Steps binary search, implementation	1300	x6900
152A	Marks implementation	900	x17208
151B	Phone Numbers implementation, strings	1200	x6505
151A	Soft Drinking implementation, math	800	x78846
150E	Freezing with Style binary search, data structures, divide and conquer, trees	3000	x909
150D	Mission Impassable dp, strings	2600	x631
150C	Smart Cheater data structures, math, probabilities	2200	x649
150B	Quantity of Strings combinatorics, dfs and similar, graphs, math	1600	x4421
150A	Win or Freeze games, math, number theory	1400	x8030
149E	Martian Strings string suffix structures, strings	2300	x2327
149D	Coloring Brackets dp	1900	x4020
149C	Division into Teams greedy, math, sortings	1500	x5451
149B	Martian Clock implementation	1600	x2294
149A	Business trip greedy, implementation, sortings	900	x41383
148E	Porcelain dp	1900	x4233
148D	Bag of mice dp, games, math, probabilities	1800	x7548
148C	Terse princess constructive algorithms, greedy	1700	x3172
148B	Escape implementation, math	1500	x5611
148A	Insomnia cure constructive algorithms, implementation, math	800	x97517
147B	Smile House binary search, graphs, matrices	2500	x829
147A	Punctuation implementation, strings	1300	x3738
146B	Lucky Mask brute force, implementation	1300	x4574
146A	Lucky Ticket implementation	800	x15507
145E	Lucky Queries data structures	2400	x3376
145D	Lucky Pair combinatorics, data structures, implementation	2900	x252
145C	Lucky Subsequence combinatorics, dp, math	2100	x1942
145B	Lucky Number 2 constructive algorithms	1800	x2246
145A	Lucky Conversion greedy, implementation	1200	x7228
144E	Competition data structures, greedy	2200	x608
144D	Missile Silos data structures, dfs and similar, graphs, shortest paths	1900	x4191
144C	Anagram Search implementation, strings	1500	x4058
144B	Meeting implementation	1300	x5373
144A	Arrival of the General implementation	800	x101719
143B	Help Kingdom of Far Far Away 2 implementation, strings	1200	x5071
143A	Help Vasilisa the Wise 2 brute force, math	1000	x14287
142E	Help Greg the Dwarf 2 geometry	3000	x83
142D	Help Shrek and Donkey 2 games	2600	x357
142C	Help Caretaker brute force, dp	2300	x936
142B	Help General constructive algorithms, greedy, implementation	1800	x2267
142A	Help Farmer brute force, math	1600	x2660
141E	Clearing Up constructive algorithms, dp, dsu, graphs	2300	x1169
141D	Take-off Ramps graphs, shortest paths	2300	x923
141C	Queue constructive algorithms, greedy, sortings	1800	x2502
141B	Hopscotch geometry, math	1400	x5481
141A	Amusing Joke implementation, sortings, strings	800	x87854
140F	New Year Snowflake geometry, sortings	2600	x379
140E	New Year Garland combinatorics, dp	2600	x969
140D	New Year Contest greedy, sortings	1800	x2226
140C	New Year Snowmen binary search, data structures, greedy	1800	x4435
140B	New Year Cards brute force, greedy, implementation	1800	x1691
140A	New Year Table geometry, math	1700	x4188
139B	Wallpaper implementation, math	1600	x1333
139A	Petr and Book implementation	1000	x32893
138E	Hellish Constraints brute force, dp, two pointers	2900	x177
138D	World of Darkraft dp, games	2500	x506
138C	Mushroom Gnomes - 2 binary search, data structures, probabilities, sortings	2200	x882
138B	Digits Permutations greedy	1900	x1043
138A	Literature Lesson implementation	1600	x2411
137E	Last Chance data structures, implementation, strings	2000	x1258
137D	Palindromes dp, strings	1900	x1546
137C	History sortings	1500	x7350
137B	Permutation greedy	1000	x14006
137A	Postcards and photos implementation	900	x7344
136B	Ternary Logic implementation, math	1100	x5024
136A	Presents implementation	800	x125359
135E	Weak Subsequence combinatorics	3000	x315
135D	Cycle brute force, dfs and similar, implementation	2500	x307
135C	Zero-One constructive algorithms, games, greedy	1900	x1359
135B	Rectangle and Square brute force, geometry, math	1600	x2421
135A	Replacement greedy, implementation, sortings	1300	x7730
134C	Swaps constructive algorithms, graphs, greedy	2200	x480
134B	Pairs of Numbers brute force, dfs and similar, math, number theory	1900	x2123
134A	Average Numbers brute force, implementation	1200	x4162
133B	Unary implementation	1200	x8912
133A	HQ9+ implementation	900	x110461
132E	Bits of merry old England flows, graphs	2700	x544
132D	Constants in the language of Shakespeare constructive algorithms, dp, greedy	2100	x632
132C	Logo Turtle dp	1800	x2376
132B	Piet implementation	2100	x671
132A	Turing Tape implementation	1300	x2807
131F	Present to Mom binary search, two pointers	2000	x664