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Codeforces Round #851 (Div. 2)
08:57:13
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binary search
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
#
Name
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x54635
1611B
Team Composition: Programmers and Mathematicians
binary search
,
constructive algorithms
,
math
800
x23640
1566A
Median Maximization
binary search
,
greedy
,
math
800
x19862
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x18942
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x13520
1138A
Sushi for Two
binary search
,
greedy
,
implementation
900
x14777
1476A
K-divisible Sum
binary search
,
constructive algorithms
,
greedy
,
math
1000
x28013
1474B
Different Divisors
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1000
x22358
1419D1
Sage's Birthday (easy version)
binary search
,
constructive algorithms
,
greedy
,
sortings
1000
x20653
1593C
Save More Mice
binary search
,
greedy
,
greedy
1000
x20287
978C
Letters
binary search
,
implementation
,
two pointers
1000
x20092
1744C
Traffic Light
binary search
,
implementation
,
two pointers
1000
x17530
1195B
Sport Mafia
binary search
,
brute force
,
math
1000
x16979
1725B
Basketball Together
binary search
,
greedy
,
sortings
1000
x7808
195A
Let's Watch Football
binary search
,
brute force
,
math
1000
x7393
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x43585
1335C
Two Teams Composing
binary search
,
greedy
,
implementation
,
sortings
1100
x29437
1490C
Sum of Cubes
binary search
,
brute force
,
brute force
,
math
1100
x25656
1366A
Shovels and Swords
binary search
,
greedy
,
math
1100
x25438
1324C
Frog Jumps
binary search
,
data structures
,
dfs and similar
,
greedy
,
implementation
1100
x23913
1345B
Card Constructions
binary search
,
brute force
,
dp
,
math
1100
x22878
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x22557
1463A
Dungeon
binary search
,
math
1100
x21318
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x18828
1426C
Increase and Copy
binary search
,
constructive algorithms
,
math
1100
x17578
1669F
Eating Candies
binary search
,
data structures
,
greedy
,
two pointers
1100
x17113
1288A
Deadline
binary search
,
brute force
,
math
,
ternary search
1100
x16646
1293A
ConneR and the A.R.C. Markland-N
binary search
,
brute force
,
implementation
1100
x14275
166A
Rank List
binary search
,
implementation
,
sortings
1100
x13811
1042A
Benches
binary search
,
implementation
1100
x11273
1099B
Squares and Segments
binary search
,
constructive algorithms
,
math
1100
x10081
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x9708
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x58441
1352C
K-th Not Divisible by n
binary search
,
math
1200
x37185
474B
Worms
binary search
,
implementation
1200
x34572
1354B
Ternary String
binary search
,
dp
,
implementation
,
two pointers
1200
x24819
1221C
Perfect Team
binary search
,
math
1200
x17744
1613C
Poisoned Dagger
binary search
1200
x17394
1006C
Three Parts of the Array
binary search
,
data structures
,
two pointers
1200
x17182
1692E
Binary Deque
binary search
,
implementation
,
two pointers
1200
x14941
1742E
Scuza
binary search
,
greedy
,
math
1200
x14697
1671C
Dolce Vita
binary search
,
brute force
,
greedy
,
math
1200
x13264
1131C
Birthday
binary search
,
greedy
,
sortings
1200
x13125
1530C
Pursuit
binary search
,
brute force
,
greedy
,
sortings
1200
x13059
743B
Chloe and the sequence
binary search
,
bitmasks
,
constructive algorithms
,
implementation
1200
x12610
637B
Chat Order
*special problem
,
binary search
,
constructive algorithms
,
data structures
,
sortings
1200
x11392
1763B
Incinerate
binary search
,
brute force
,
data structures
,
implementation
,
math
,
sortings
1200
x10151
911B
Two Cakes
binary search
,
brute force
,
implementation
1200
x10005
1100C
NN and the Optical Illusion
binary search
,
geometry
,
math
1200
x9213
1011B
Planning The Expedition
binary search
,
brute force
,
implementation
1200
x9102
732C
Sanatorium
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
1200
x8660
302B
Eugeny and Play List
binary search
,
implementation
,
two pointers
1200
x6807
424B
Megacity
binary search
,
greedy
,
implementation
,
sortings
1200
x6491
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x55086
1328B
K-th Beautiful String
binary search
,
brute force
,
combinatorics
,
implementation
,
math
1300
x24960
1538C
Number of Pairs
binary search
,
data structures
,
math
,
two pointers
1300
x22102
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x21407
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x18692
1476B
Inflation
binary search
,
brute force
,
greedy
,
math
1300
x17344
1574C
Slay the Dragon
binary search
,
greedy
,
sortings
,
ternary search
1300
x14314
1498B
Box Fitting
binary search
,
bitmasks
,
data structures
,
greedy
1300
x14148
251A
Points on Line
binary search
,
combinatorics
,
two pointers
1300
x13991
1260B
Obtain Two Zeroes
binary search
,
math
1300
x13945
1703F
Yet Another Problem About Pairs Satisfying an Inequality
binary search
,
data structures
,
dp
,
greedy
,
sortings
1300
x13698
1217A
Creating a Character
binary search
,
math
1300
x13681
1612C
Chat Ban
binary search
,
math
1300
x12758
1617C
Paprika and Permutation
binary search
,
greedy
,
math
,
sortings
1300
x12540
1279B
Verse For Santa
binary search
,
brute force
,
implementation
1300
x12493
1561C
Deep Down Below
binary search
,
greedy
,
sortings
1300
x11864
96B
Lucky Numbers (easy)
binary search
,
bitmasks
,
brute force
1300
x11829
1736C1
Good Subarrays (Easy Version)
binary search
,
data structures
,
schedules
,
two pointers
1300
x11515
1187B
Letters Shop
binary search
,
implementation
,
strings
1300
x11071
1076C
Meme Problem
binary search
,
math
1300
x10970
271B
Prime Matrix
binary search
,
brute force
,
math
,
number theory
1300
x10614
192A
Funky Numbers
binary search
,
brute force
,
implementation
1300
x8985
1119B
Alyona and a Narrow Fridge
binary search
,
flows
,
greedy
,
sortings
1300
x8829
1315B
Homecoming
binary search
,
dp
,
greedy
,
strings
1300
x8445
996B
World Cup
binary search
,
math
1300
x8030
1737B
Ela's Fitness and the Luxury Number
binary search
,
implementation
,
math
1300
x7710
932B
Recursive Queries
binary search
,
data structures
,
dfs and similar
1300
x7146
152B
Steps
binary search
,
implementation
1300
x5465
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4273
181B
Number of Triplets
binary search
,
brute force
1300
x2422
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x35466
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x21686
1201C
Maximum Median
binary search
,
greedy
,
math
,
sortings
1400
x16118
1490E
Accidental Victory
binary search
,
data structures
,
greedy
1400
x15196
1354C1
Simple Polygon Embedding
binary search
,
geometry
,
math
,
ternary search
1400
x14387
1535C
Unstable String
binary search
,
dp
,
greedy
,
implementation
,
strings
,
two pointers
1400
x14042
1624D
Palindromes Coloring
binary search
,
greedy
,
sortings
,
strings
1400
x13485
1628A
Meximum Array
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
1400
x13403
1551B2
Wonderful Coloring - 2
binary search
,
constructive algorithms
,
data structures
,
greedy
1400
x13314
1452B
Toy Blocks
binary search
,
greedy
,
math
,
sortings
1400
x13180
1443C
The Delivery Dilemma
binary search
,
greedy
,
sortings
1400
x13145
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x12704
816B
Karen and Coffee
binary search
,
data structures
,
implementation
1400
x12532
1183C
Computer Game
binary search
,
math
1400
x12377
1263C
Everyone is a Winner!
binary search
,
math
,
meet-in-the-middle
,
number theory
1400
x12190
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x11831
670D1
Magic Powder - 1
binary search
,
brute force
,
implementation
1400
x11682
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