Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
123B	Squares math	1800	x1102
121E	Lucky Array data structures	2400	x1661
121D	Lucky Segments binary search, implementation, two pointers	2500	x273
121C	Lucky Permutation brute force, combinatorics, number theory	1900	x1273
121B	Lucky Transformation strings	1500	x2538
120J	Minimum Sum divide and conquer, geometry, sortings	1900	x910
120I	Luck is in Numbers greedy	2200	x303
120H	Brevity is Soul of Wit graph matchings	1800	x1361
120G	Boom implementation	1800	x683
120F	Spiders dp, greedy, trees	1400	x3529
120E	Put Knight! games, math	1400	x2659
120D	Three Sons brute force	1400	x1907
119E	Alternative Reality geometry	2400	x94
119D	String Transformation hashing, strings	2500	x479
119C	Education Reform dp	2000	x873
119B	Before Exam constructive algorithms, implementation, sortings	1900	x1069
118E	Bertown roads dfs and similar, graphs	2000	x6284
118D	Caesar's Legions dp	1700	x16946
118C	Fancy Number brute force, greedy, sortings, strings	1900	x2537
117E	Tree or not Tree data structures, divide and conquer, implementation, trees	2900	x317
117D	Not Quick Transformation divide and conquer, math	2500	x331
117C	Cycle dfs and similar, graphs	2000	x2567
117B	Very Interesting Game brute force, number theory	1800	x1542
115E	Linear Kingdom Races data structures, dp	2400	x1396
115D	Unambiguous Arithmetic Expression dp, expression parsing	2600	x379
115C	Plumber math	2200	x589
115B	Lawnmower greedy, sortings	1500	x2443
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x3556
113E	Sleeping combinatorics, implementation, math	2700	x117
113D	Museum math, matrices, probabilities	2700	x656
113C	Double Happiness brute force, math, number theory	2200	x1207
113B	Petr# brute force, data structures, hashing, strings	2000	x2755
113A	Grammar Lessons implementation, strings	1600	x2246
111E	Petya and Rectangle	2900	x65
111D	Petya and Coloring combinatorics, dp	2300	x725
111C	Petya and Spiders bitmasks, dp, dsu	2100	x1309
111B	Petya and Divisors binary search, data structures, number theory	1900	x3576
111A	Petya and Inequiations greedy	1400	x4668
109E	Lucky Interval brute force, math	2700	x100
109D	Lucky Sorting constructive algorithms, sortings	2000	x617
109C	Lucky Tree dp, dsu, trees	1900	x3219
109B	Lucky Probability brute force, probabilities	1900	x1337
108B	Datatypes math, sortings	1400	x2430
107E	Darts geometry, probabilities	2700	x128
107D	Crime Management dp, graphs, matrices	2400	x402
107C	Arrangement bitmasks, dp	2400	x363
107B	Basketball Team combinatorics, dp, math, probabilities	1600	x3334
107A	Dorm Water Supply dfs and similar, graphs	1400	x4992
106E	Space Rescuers geometry, ternary search	2100	x842
106D	Treasure Island brute force, implementation	1700	x1297
106C	Buns dp	1700	x5788
105E	Lift and Throw brute force	2500	x183
105D	Entertaining Geodetics brute force, dsu, implementation	2700	x136
105C	Item World brute force, implementation, sortings	2200	x324
105B	Dark Assembly brute force, probabilities	1800	x803
105A	Transmigration implementation	1700	x1818
103E	Buying Sets flows, graph matchings	2900	x832
103D	Time to Raid Cowavans brute force, data structures, sortings	2100	x2004
103C	Russian Roulette constructive algorithms, greedy	1900	x939
103B	Cthulhu dfs and similar, dsu, graphs	1500	x8610
101E	Candies and Stones divide and conquer, dp	2500	x480
101D	Castle dp, greedy, probabilities, sortings, trees	2300	x672
101C	Vectors implementation, math	2000	x688
101B	Buses binary search, data structures, dp	1700	x2519
100J	Interval Coloring *special problem, greedy, math	2400	x61
100I	Rotation *special problem, geometry, math	1500	x342
100H	Battleship *special problem, dfs and similar, implementation	2100	x75
100G	Name the album *special problem, data structures, implementation	1800	x110
100F	Polynom *special problem, implementation	1800	x133
100E	Lamps in a Line *special problem, math	1600	x268
100D	World of Mouth *special problem, strings	1500	x298
100C	A+B *special problem, implementation	1400	x519
100B	Friendly Numbers *special problem, implementation	1500	x537
98E	Help Shrek and Donkey dp, games, math, probabilities	2700	x461
98D	Help Monks constructive algorithms	2500	x181
98C	Help Greg the Dwarf geometry, ternary search	2500	x302
98B	Help King implementation, probabilities, trees	2200	x117
98A	Help Victoria the Wise brute force, implementation	1700	x1173
97E	Leaders dfs and similar, dsu, graphs, trees	2200	x373
97D	Robot in Basement bitmasks, brute force, implementation	2700	x242
97C	Winning Strategy binary search, graphs, math, shortest paths	2400	x300
97B	Superset constructive algorithms, divide and conquer	2300	x809
97A	Domino brute force, implementation	2400	x254
95E	Lucky Country dp, dsu, graphs	2500	x1419
95D	Horse Races dp, math	2500	x419
95C	Volleyball shortest paths	1900	x2717
95B	Lucky Numbers dp, greedy	1800	x1185
95A	Hockey implementation, strings	1600	x1650
93E	Lostborn dp, math, number theory	2600	x440
93D	Flags dp, math, matrices	2500	x336
93C	Azembler brute force, implementation	2500	x412
93B	End of Exams greedy	1900	x906
93A	Frames implementation	1700	x1916
91E	Igloo Skyscraper data structures, geometry	2500	x588
91D	Grocer's Problem constructive algorithms, graphs, greedy	2600	x264
91C	Ski Base combinatorics, dsu, graphs	2300	x868
91B	Queue binary search, data structures	1500	x6613
91A	Newspaper Headline greedy, strings	1500	x3520
89E	Fire and Ice greedy	2900	x99
89D	Space mines geometry	2500	x231