Problemset - Codeforces

Please read the new rule regarding the restriction on the use of AI tools. ×

→ Pay attention

Before contest
Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
10:15:28
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
128C	Games with Rectangle combinatorics, dp	2000	x2925
128B	String brute force, constructive algorithms, hashing, implementation, string suffix structures, strings	2100	x2551
128A	Statues dfs and similar	1500	x3189
126E	Pills brute force, flows	2900	x83
126D	Fibonacci Sums dp, math	2300	x830
126C	E-reader Display constructive algorithms, greedy	2000	x723
126B	Password binary search, dp, hashing, string suffix structures, strings	1700	x19294
126A	Hot Bath binary search, brute force, math	1900	x1433
125E	MST Company binary search, graphs	2400	x1065
125D	Two progressions constructive algorithms, greedy	2200	x400
125C	Hobbits' Party constructive algorithms, greedy	1600	x922
125A	Measuring Lengths in Baden math	1400	x2714
124B	Permutations brute force, combinatorics, implementation	1400	x3893
123E	Maze dfs and similar, dp, probabilities, trees	2500	x717
123D	String string suffix structures	2300	x1212
123C	Brackets combinatorics, dp, greedy	2300	x603
123B	Squares math	1800	x1114
121E	Lucky Array data structures	2400	x1717
121D	Lucky Segments binary search, implementation, two pointers	2500	x276
121C	Lucky Permutation brute force, combinatorics, number theory	1900	x1285
121B	Lucky Transformation strings	1500	x2571
120J	Minimum Sum divide and conquer, geometry, sortings	1900	x920
120I	Luck is in Numbers greedy	2200	x304
120H	Brevity is Soul of Wit graph matchings	1800	x1391
120G	Boom implementation	1800	x689
120F	Spiders dp, greedy, trees	1400	x3577
120E	Put Knight! games, math	1400	x2726
120D	Three Sons brute force	1400	x1927
119E	Alternative Reality geometry	2400	x95
119D	String Transformation hashing, strings	2500	x491
119C	Education Reform dp	2000	x922
119B	Before Exam constructive algorithms, implementation, sortings	1900	x1078
118E	Bertown roads dfs and similar, graphs	2000	x6536
118D	Caesar's Legions dp	1700	x17383
118C	Fancy Number brute force, greedy, sortings, strings	1900	x2587
117E	Tree or not Tree data structures, divide and conquer, implementation, trees	2900	x326
117D	Not Quick Transformation divide and conquer, math	2500	x336
117C	Cycle dfs and similar, graphs	2000	x2615
117B	Very Interesting Game brute force, number theory	1800	x1607
115E	Linear Kingdom Races data structures, dp	2400	x1546
115D	Unambiguous Arithmetic Expression dp, expression parsing	2600	x383
115C	Plumber math	2200	x595
115B	Lawnmower greedy, sortings	1500	x2598
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x3640
113E	Sleeping combinatorics, implementation, math	2700	x119
113D	Museum math, matrices, probabilities	2700	x674
113C	Double Happiness brute force, math, number theory	2200	x1232
113B	Petr# brute force, data structures, hashing, strings	2000	x2805
113A	Grammar Lessons implementation, strings	1600	x2292
111E	Petya and Rectangle	2900	x66
111D	Petya and Coloring combinatorics, dp	2300	x759
111C	Petya and Spiders bitmasks, dp, dsu	2100	x1372
111B	Petya and Divisors binary search, data structures, number theory	1900	x3659
111A	Petya and Inequiations greedy	1400	x4756
109E	Lucky Interval brute force, math	2700	x101
109D	Lucky Sorting constructive algorithms, sortings	2000	x802
109C	Lucky Tree dp, dsu, trees	1900	x3512
109B	Lucky Probability brute force, probabilities	1900	x1545
108B	Datatypes math, sortings	1400	x2458
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	x3456
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	x1322
106C	Buns dp	1700	x5963
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	x810
105A	Transmigration implementation	1700	x1837
103E	Buying Sets flows, graph matchings	2900	x876
103D	Time to Raid Cowavans brute force, data structures, sortings	2100	x2111
103C	Russian Roulette constructive algorithms, greedy	1900	x953
103B	Cthulhu dfs and similar, dsu, graphs	1500	x8827
101E	Candies and Stones divide and conquer, dp	2500	x486
101D	Castle dp, greedy, probabilities, sortings, trees	2300	x682
101C	Vectors implementation, math	2000	x697
101B	Buses binary search, data structures, dp	1700	x2565
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
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	x126
98A	Help Victoria the Wise brute force, implementation	1700	x1185
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
95E	Lucky Country dp, dsu, graphs	2500	x1478