Problemset - Codeforces

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

→ Pay attention

Before contest
Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
01:44:42
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
123C	Brackets combinatorics, dp, greedy	2300	x603
123B	Squares math	1800	x1115
123A	Prime Permutation implementation, number theory, strings	1300	x3604
122B	Lucky Substring brute force, implementation	1000	x12328
122A	Lucky Division brute force, number theory	1000	x123196
121E	Lucky Array data structures	2400	x1719
121D	Lucky Segments binary search, implementation, two pointers	2500	x276
121C	Lucky Permutation brute force, combinatorics, number theory	1900	x1286
121B	Lucky Transformation strings	1500	x2572
121A	Lucky Sum implementation	1100	x9181
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	x1393
120G	Boom implementation	1800	x689
120F	Spiders dp, greedy, trees	1400	x3582
120E	Put Knight! games, math	1400	x2727
120D	Three Sons brute force	1400	x1928
120C	Winnie-the-Pooh and honey implementation, math	1100	x3665
120B	Quiz League implementation	1100	x3426
120A	Elevator brute force, implementation, math	1000	x4589
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
119A	Epic Game implementation	800	x27363
118E	Bertown roads dfs and similar, graphs	2000	x6545
118D	Caesar's Legions dp	1700	x17419
118C	Fancy Number brute force, greedy, sortings, strings	1900	x2590
118B	Present from Lena constructive algorithms, implementation	1000	x29903
118A	String Task implementation, strings	1000	x191747
117E	Tree or not Tree data structures, divide and conquer, implementation, trees	2900	x330
117D	Not Quick Transformation divide and conquer, math	2500	x336
117C	Cycle dfs and similar, graphs	2000	x2623
117B	Very Interesting Game brute force, number theory	1800	x1607
117A	Elevator implementation, math	1300	x2015
116B	Little Pigs and Wolves greedy, implementation	1100	x13726
116A	Tram implementation	800	x141073
115E	Linear Kingdom Races data structures, dp	2400	x1551
115D	Unambiguous Arithmetic Expression dp, expression parsing	2600	x383
115C	Plumber math	2200	x595
115B	Lawnmower greedy, sortings	1500	x2603
115A	Party dfs and similar, graphs, trees	900	x34466
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x3648
114A	Cifera math	1000	x14118
113E	Sleeping combinatorics, implementation, math	2700	x119
113D	Museum math, matrices, probabilities	2700	x684
113C	Double Happiness brute force, math, number theory	2200	x1232
113B	Petr# brute force, data structures, hashing, strings	2000	x2807
113A	Grammar Lessons implementation, strings	1600	x2295
112B	Petya and Square implementation, math	1200	x4146
112A	Petya and Strings implementation, strings	800	x223866
111E	Petya and Rectangle	2900	x66
111D	Petya and Coloring combinatorics, dp	2300	x759
111C	Petya and Spiders bitmasks, dp, dsu	2100	x1374
111B	Petya and Divisors binary search, data structures, number theory	1900	x3666
111A	Petya and Inequiations greedy	1400	x4765
110B	Lucky String constructive algorithms, strings	1100	x10199
110A	Nearly Lucky Number implementation	800	x154039
109E	Lucky Interval brute force, math	2700	x101
109D	Lucky Sorting constructive algorithms, sortings	2000	x805
109C	Lucky Tree dp, dsu, trees	1900	x3515
109B	Lucky Probability brute force, probabilities	1900	x1549
109A	Lucky Sum of Digits brute force, implementation	1000	x17578
108B	Datatypes math, sortings	1400	x2461
108A	Palindromic Times implementation, strings	1000	x9368
107E	Darts geometry, probabilities	2700	x136
107D	Crime Management dp, graphs, matrices	2400	x421
107C	Arrangement bitmasks, dp	2400	x369
107B	Basketball Team combinatorics, dp, math, probabilities	1600	x3463
107A	Dorm Water Supply dfs and similar, graphs	1400	x5089
106E	Space Rescuers geometry, ternary search	2100	x865
106D	Treasure Island brute force, implementation	1700	x1350
106C	Buns dp	1700	x5973
106B	Choosing Laptop brute force, implementation	1000	x6097
106A	Card Game implementation	1000	x7616
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	x816
105A	Transmigration implementation	1700	x1841
104A	Blackjack implementation	800	x15367
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	x954
103B	Cthulhu dfs and similar, dsu, graphs	1500	x8849
103A	Testing Pants for Sadness greedy, implementation, math	1100	x5976
102B	Sum of Digits implementation	1000	x26294
102A	Clothes brute force	1200	x3001
101E	Candies and Stones divide and conquer, dp	2500	x487
101D	Castle dp, greedy, probabilities, sortings, trees	2300	x682
101C	Vectors implementation, math	2000	x698
101B	Buses binary search, data structures, dp	1700	x2572
101A	Homework greedy	1200	x3808
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