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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
42:35:01
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Difficulty:
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sortings
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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Custom test
Problems
#
Name
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x15452
1257C
Dominated Subarray
greedy
,
implementation
,
sortings
,
strings
,
two pointers
1200
x15462
1592B
Hemose Shopping
constructive algorithms
,
dsu
,
math
,
sortings
1200
x15491
1676F
Longest Strike
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x15559
1674D
A-B-C Sort
constructive algorithms
,
implementation
,
sortings
1200
x15623
352B
Jeff and Periods
implementation
,
sortings
1300
x15663
1519C
Berland Regional
brute force
,
data structures
,
greedy
,
number theory
,
sortings
1400
x15705
1584C
Two Arrays
greedy
,
math
,
sortings
900
x15764
1625B
Elementary Particles
brute force
,
greedy
,
sortings
1100
x15796
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x15877
1093B
Letters Rearranging
constructive algorithms
,
greedy
,
sortings
,
strings
900
x15909
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x15944
1624D
Palindromes Coloring
binary search
,
greedy
,
sortings
,
strings
1400
x16039
1617A
Forbidden Subsequence
constructive algorithms
,
greedy
,
sortings
,
strings
800
x16054
1762B
Make Array Good
constructive algorithms
,
implementation
,
number theory
,
sortings
1100
x16061
1650C
Weight of the System of Nested Segments
greedy
,
hashing
,
implementation
,
sortings
1200
x16093
1607D
Blue-Red Permutation
greedy
,
math
,
sortings
1300
x16146
1627B
Not Sitting
games
,
greedy
,
sortings
1300
x16180
572A
Arrays
sortings
900
x16190
1418B
Negative Prefixes
greedy
,
sortings
1300
x16211
1668B
Social Distance
greedy
,
math
,
sortings
900
x16226
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16313
1574C
Slay the Dragon
binary search
,
greedy
,
sortings
,
ternary search
1300
x16351
1930A
Maximise The Score
greedy
,
sortings
800
x16353
1685A
Circular Local MiniMax
constructive algorithms
,
greedy
,
sortings
1100
x16365
1248B
Grow The Tree
greedy
,
math
,
sortings
900
x16400
1561A
Simply Strange Sort
brute force
,
implementation
,
sortings
800
x16417
166A
Rank List
binary search
,
implementation
,
sortings
1100
x16437
1144B
Parity Alternated Deletions
greedy
,
implementation
,
sortings
900
x16554
1495A
Diamond Miner
geometry
,
greedy
,
math
,
sortings
1200
x16563
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x16563
289B
Polo the Penguin and Matrix
brute force
,
dp
,
implementation
,
sortings
,
ternary search
1400
x16632
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x16664
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x16714
560A
Currency System in Geraldion
implementation
,
sortings
1000
x16736
1427A
Avoiding Zero
math
,
sortings
900
x16760
507A
Amr and Music
greedy
,
implementation
,
sortings
1000
x16778
1681C
Double Sort
implementation
,
sortings
1200
x16834
1480B
The Great Hero
greedy
,
implementation
,
sortings
900
x16867
1682B
AND Sorting
bitmasks
,
constructive algorithms
,
sortings
1100
x16875
1896A
Jagged Swaps
sortings
800
x16935
1827A
Counting Orders
combinatorics
,
math
,
sortings
,
two pointers
1100
x17062
546B
Soldier and Badges
brute force
,
greedy
,
implementation
,
sortings
1200
x17085
1174A
Ehab Fails to Be Thanos
constructive algorithms
,
greedy
,
sortings
1000
x17098
1015C
Songs Compression
sortings
1100
x17145
1914D
Three Activities
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x17171
1353D
Constructing the Array
constructive algorithms
,
data structures
,
sortings
1600
x17208
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x17268
1807G2
Subsequence Addition (Hard Version)
bitmasks
,
dp
,
greedy
,
implementation
,
sortings
1100
x17301
1641A
Great Sequence
brute force
,
greedy
,
sortings
1200
x17383
977D
Divide by three, multiply by two
dfs and similar
,
math
,
sortings
1400
x17422
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x17435
1605B
Reverse Sort
greedy
,
sortings
1000
x17502
1790D
Matryoshkas
data structures
,
greedy
,
sortings
1200
x17547
1614B
Divan and a New Project
constructive algorithms
,
sortings
1000
x17570
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x17580
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x17626
988B
Substrings Sort
sortings
,
strings
1100
x17661
1579B
Shifting Sort
implementation
,
sortings
1100
x17710
1703F
Yet Another Problem About Pairs Satisfying an Inequality
binary search
,
data structures
,
dp
,
greedy
,
sortings
1300
x17714
1688B
Patchouli's Magical Talisman
bitmasks
,
constructive algorithms
,
greedy
,
sortings
800
x17771
1216B
Shooting
greedy
,
implementation
,
sortings
900
x17946
1671B
Consecutive Points Segment
brute force
,
math
,
sortings
1000
x18032
1438B
Valerii Against Everyone
constructive algorithms
,
data structures
,
greedy
,
sortings
1000
x18129
1891A
Sorting with Twos
constructive algorithms
,
sortings
800
x18143
1665B
Array Cloning Technique
constructive algorithms
,
greedy
,
sortings
900
x18278
1656C
Make Equal With Mod
constructive algorithms
,
math
,
number theory
,
sortings
1200
x18288
1501B
Napoleon Cake
dp
,
implementation
,
sortings
900
x18340
1654A
Maximum Cake Tastiness
brute force
,
greedy
,
implementation
,
sortings
800
x18352
1311B
WeirdSort
dfs and similar
,
sortings
1200
x18365
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x18381
1922B
Forming Triangles
combinatorics
,
constructive algorithms
,
math
,
sortings
1200
x18493
984A
Game
sortings
800
x18665
1920B
Summation Game
games
,
greedy
,
math
,
sortings
1100
x18782
1445A
Array Rearrangment
greedy
,
sortings
800
x18783
1369C
RationalLee
greedy
,
math
,
sortings
,
two pointers
1400
x18946
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x19026
1336A
Linova and Kingdom
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1600
x19041
1832B
Maximum Sum
brute force
,
sortings
,
two pointers
1100
x19046
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19073
1712C
Sort Zero
greedy
,
sortings
1100
x19074
27A
Next Test
implementation
,
sortings
1200
x19134
1656A
Good Pairs
math
,
sortings
800
x19156
807A
Is it rated?
implementation
,
sortings
900
x19183
1798A
Showstopper
greedy
,
implementation
,
sortings
800
x19235
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x19326
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x19391
1921D
Very Different Array
data structures
,
greedy
,
sortings
,
two pointers
1100
x19449
1767B
Block Towers
data structures
,
greedy
,
sortings
800
x19484
1836A
Destroyer
implementation
,
sortings
800
x19595
1380C
Create The Teams
brute force
,
dp
,
greedy
,
implementation
,
sortings
1400
x19727
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x19808
1272A
Three Friends
brute force
,
greedy
,
math
,
sortings
900
x19863
1744D
Divisibility by 2^n
greedy
,
math
,
sortings
1200
x19888
1791G1
Teleporters (Easy Version)
greedy
,
sortings
1100
x19982
1165B
Polycarp Training
data structures
,
greedy
,
sortings
1000
x20054
1638B
Odd Swap Sort
data structures
,
math
,
sortings
1100
x20267
1529B
Sifid and Strange Subsequences
greedy
,
math
,
sortings
1100
x20276
1622B
Berland Music
data structures
,
greedy
,
math
,
sortings
1000
x20415
1733A
Consecutive Sum
greedy
,
sortings
800
x20546
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