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
109C	Lucky Tree dp, dsu, trees	1900	x3514
109B	Lucky Probability brute force, probabilities	1900	x1545
109A	Lucky Sum of Digits brute force, implementation	1000	x17563
108B	Datatypes math, sortings	1400	x2458
108A	Palindromic Times implementation, strings	1000	x9363
107E	Darts geometry, probabilities	2700	x135
107D	Crime Management dp, graphs, matrices	2400	x421
107C	Arrangement bitmasks, dp	2400	x369
107B	Basketball Team combinatorics, dp, math, probabilities	1600	x3457
107A	Dorm Water Supply dfs and similar, graphs	1400	x5086
106E	Space Rescuers geometry, ternary search	2100	x861
106D	Treasure Island brute force, implementation	1700	x1325
106C	Buns dp	1700	x5967
106B	Choosing Laptop brute force, implementation	1000	x6093
106A	Card Game implementation	1000	x7611
105E	Lift and Throw brute force	2500	x187
105D	Entertaining Geodetics brute force, dsu, implementation	2700	x139
105C	Item World brute force, implementation, sortings	2200	x344
105B	Dark Assembly brute force, probabilities	1800	x812
105A	Transmigration implementation	1700	x1839
104A	Blackjack implementation	800	x15346
103E	Buying Sets flows, graph matchings	2900	x876
103D	Time to Raid Cowavans brute force, data structures, sortings	2100	x2114
103C	Russian Roulette constructive algorithms, greedy	1900	x953
103B	Cthulhu dfs and similar, dsu, graphs	1500	x8839
103A	Testing Pants for Sadness greedy, implementation, math	1100	x5975
102B	Sum of Digits implementation	1000	x26238
102A	Clothes brute force	1200	x2998
101E	Candies and Stones divide and conquer, dp	2500	x486
101D	Castle dp, greedy, probabilities, sortings, trees	2300	x682
101C	Vectors implementation, math	2000	x698
101B	Buses binary search, data structures, dp	1700	x2568
101A	Homework greedy	1200	x3801
100J	Interval Coloring *special problem, greedy, math	2400	x62
100I	Rotation *special problem, geometry, math	1500	x348
100H	Battleship *special problem, dfs and similar, implementation	2100	x76
100G	Name the album *special problem, data structures, implementation	1800	x112
100F	Polynom *special problem, implementation	1800	x135
100E	Lamps in a Line *special problem, math	1600	x271
100D	World of Mouth *special problem, strings	1500	x303
100C	A+B *special problem, implementation	1400	x533
100B	Friendly Numbers *special problem, implementation	1500	x543
100A	Carpeting the Room *special problem, implementation	1100	x921
99B	Help Chef Gerasim implementation, sortings	1300	x2963
99A	Help Far Away Kingdom strings	800	x6688
98E	Help Shrek and Donkey dp, games, math, probabilities	2700	x476
98D	Help Monks constructive algorithms	2500	x182
98C	Help Greg the Dwarf geometry, ternary search	2500	x308
98B	Help King implementation, probabilities, trees	2200	x127
98A	Help Victoria the Wise brute force, implementation	1700	x1186
97E	Leaders dfs and similar, dsu, graphs, trees	2200	x381
97D	Robot in Basement bitmasks, brute force, implementation	2700	x246
97C	Winning Strategy binary search, graphs, math, shortest paths	2400	x302
97B	Superset constructive algorithms, divide and conquer	2300	x818
97A	Domino brute force, implementation	2400	x264
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x15384
96A	Football implementation, strings	900	x157540
95E	Lucky Country dp, dsu, graphs	2500	x1480
95D	Horse Races dp, math	2500	x425
95C	Volleyball shortest paths	1900	x2779
95B	Lucky Numbers dp, greedy	1800	x1215
95A	Hockey implementation, strings	1600	x1669
94B	Friends graphs, implementation, math	1300	x4659
94A	Restoring Password implementation, strings	900	x10515
93E	Lostborn dp, math, number theory	2600	x498
93D	Flags dp, math, matrices	2500	x347
93C	Azembler brute force, implementation	2500	x422
93B	End of Exams greedy	1900	x918
93A	Frames implementation	1700	x1945
92B	Binary Number greedy	1300	x4803
92A	Chips implementation, math	800	x18734
91E	Igloo Skyscraper data structures, geometry	2500	x603
91D	Grocer's Problem constructive algorithms, graphs, greedy	2600	x270
91C	Ski Base combinatorics, dsu, graphs	2300	x879
91B	Queue binary search, data structures	1500	x6784
91A	Newspaper Headline greedy, strings	1500	x3586
90B	African Crossword implementation, strings	1100	x5289
90A	Cableway greedy, math	1000	x4675
89E	Fire and Ice greedy	2900	x99
89D	Space mines geometry	2500	x238
89C	Chip Play brute force, data structures, implementation	2300	x620
89B	Widget Library dp, expression parsing, graphs, implementation	2300	x523
89A	Robbery greedy	1800	x1476
88B	Keyboard implementation	1500	x4650
88A	Chord brute force, implementation	1200	x3825
87E	Mogohu-Rea Idol geometry	2600	x583
87D	Beautiful Road dfs and similar, dp, dsu, graphs, implementation, sortings, trees	2300	x888
87C	Interesting Game dp, games, math	2000	x1352
87B	Vasya and Types implementation, strings	1800	x1147
87A	Trains implementation, math	1500	x5353
86E	Long sequence brute force, math, matrices	2700	x188
86D	Powerful array data structures, implementation, math, two pointers	2200	x13619
86C	Genetic engineering dp, string suffix structures, trees	2500	x717
86B	Tetris revisited constructive algorithms, graph matchings, greedy, math	2200	x411
86A	Reflection math	1600	x1377
85E	Guard Towers binary search, dsu, geometry, graphs, sortings	2600	x949
85D	Sum of Medians binary search, brute force, data structures, implementation	2300	x2032
85C	Petya and Tree binary search, dfs and similar, probabilities, sortings, trees	2200	x540
85B	Embassy Queue data structures, greedy	1800	x975
85A	Domino constructive algorithms, implementation	1300	x1787