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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
26:58:15
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Difficulty:
—
greedy
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
1910G
Pool Records
*special problem
,
greedy
2700
x49
1910F
Build Railway Stations
*special problem
,
greedy
,
trees
2000
x151
1910D
Remove and Add
*special problem
,
greedy
1800
x287
1910B
Security Guard
*special problem
,
greedy
1600
x560
1909D
Split Plus K
greedy
,
math
,
number theory
1900
x3730
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x9606
1907G
Lights
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
2200
x1692
1907F
Shift and Reverse
greedy
,
sortings
1800
x4218
1907C
Removal of Unattractive Pairs
constructive algorithms
,
greedy
,
math
,
strings
1200
x17888
1906M
Triangle Construction
greedy
,
math
1700
x2192
1905C
Largest Subsequence
greedy
,
strings
1400
x10634
1905B
Begginer's Zelda
greedy
,
trees
1100
x14889
1904D2
Set To Max (Hard Version)
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
sortings
1800
x3618
1904D1
Set To Max (Easy Version)
brute force
,
constructive algorithms
,
greedy
1600
x5380
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1100
x12199
1903E
Geo Game
greedy
,
interactive
,
math
2000
x1702
1903D2
Maximum And Queries (hard version)
bitmasks
,
divide and conquer
,
dp
,
greedy
2500
x679
1903D1
Maximum And Queries (easy version)
binary search
,
bitmasks
,
brute force
,
greedy
1700
x4874
1903C
Theofanis' Nightmare
constructive algorithms
,
greedy
1400
x10013
1903B
StORage room
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1200
x10982
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x22049
1902C
Insert and Equalize
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1300
x11825
1902B
Getting Points
binary search
,
brute force
,
greedy
1100
x13003
1901E
Compressed Tree
dfs and similar
,
dp
,
graphs
,
greedy
,
sortings
,
trees
2200
x1313
1901D
Yet Another Monster Fight
binary search
,
dp
,
greedy
,
implementation
,
math
1700
x5909
1901C
Add, Divide and Floor
constructive algorithms
,
greedy
,
math
1400
x10353
1901B
Chip and Ribbon
greedy
,
math
1100
x13676
1901A
Line Trip
greedy
,
math
800
x23378
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x20303
1899F
Alex's whims
constructive algorithms
,
graphs
,
greedy
,
shortest paths
,
trees
1600
x6414
1899E
Queue Sort
greedy
,
implementation
,
sortings
1300
x13476
1899C
Yarik and Array
dp
,
greedy
,
two pointers
1100
x17334
1898E
Sofia and Strings
data structures
,
greedy
,
sortings
,
strings
,
two pointers
2200
x1985
1898D
Absolute Beauty
greedy
,
math
1900
x4573
1898B
Milena and Admirer
greedy
,
math
1500
x10094
1896F
Bracket Xoring
constructive algorithms
,
greedy
,
implementation
,
math
2600
x624
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x8299
1896B
AB Flipping
greedy
,
strings
,
two pointers
900
x12826
1895G
Two Characters, Two Colors
binary search
,
data structures
,
dp
,
flows
,
greedy
3100
x166
1895E
Infinite Card Game
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
games
,
graphs
,
greedy
,
sortings
,
two pointers
2300
x1420
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x19395
1893D
Colorful Constructive
constructive algorithms
,
data structures
,
greedy
2600
x795
1893C
Freedom of Choice
brute force
,
greedy
,
implementation
2000
x2356
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x7852
1891E
Brukhovich and Exams
brute force
,
greedy
,
implementation
,
math
,
sortings
2500
x762
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x10809
1889F
Doremy's Average Tree
data structures
,
dp
,
greedy
,
trees
3500
x66
1889C1
Doremy's Drying Plan (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x2913
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x6544
1889A
Qingshan Loves Strings 2
constructive algorithms
,
greedy
,
implementation
1300
x11762
1887C
Minimum Array
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
two pointers
2400
x1529
1886F
Diamond Theft
data structures
,
greedy
3300
x153
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1291
1884E
Hard Design
greedy
,
implementation
,
math
2800
x255
1884C
Medium Design
brute force
,
data structures
,
dp
,
greedy
,
sortings
1700
x5239
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x11397
1884A
Simple Design
brute force
,
greedy
,
math
800
x16190
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x4727
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x8701
1883E
Look Back
bitmasks
,
greedy
1700
x6682
1883D
In Love
data structures
,
greedy
1500
x9567
1882E1
Two Permutations (Easy Version)
brute force
,
constructive algorithms
,
greedy
,
number theory
2400
x930
1882D
Tree XOR
bitmasks
,
dfs and similar
,
dp
,
greedy
,
trees
1900
x4751
1882C
Card Game
brute force
,
greedy
1500
x10984
1882B
Sets and Union
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1300
x13994
1882A
Increasing Sequence
greedy
800
x23963
1879C
Make it Alternating
combinatorics
,
dp
,
greedy
1300
x14399
1879B
Chips on the Board
constructive algorithms
,
greedy
900
x20767
1879A
Rigged!
greedy
800
x21800
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x10587
1878D
Reverse Madness
data structures
,
greedy
1600
x7334
1878A
How Much Does Daytona Cost?
greedy
800
x37170
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x109
1876C
Autosynthesis
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
sortings
2100
x2088
1876A
Helmets in Night Light
greedy
,
sortings
1000
x14048
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x10531
1875A
Jellyfish and Undertale
brute force
,
greedy
900
x20627
1874C
Jellyfish and EVA
dp
,
graphs
,
greedy
,
math
,
probabilities
2300
x1474
1874A
Jellyfish and Game
brute force
,
games
,
greedy
,
implementation
1200
x15435
1873G
ABBC or BACB
constructive algorithms
,
greedy
1500
x11312
1873F
Money Trees
binary search
,
greedy
,
math
,
two pointers
1300
x13444
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x31910
1873B
Good Kid
brute force
,
greedy
,
math
800
x42903
1872G
Replace With Product
brute force
,
greedy
,
math
2000
x3876
1872B
The Corridor or There and Back Again
greedy
,
implementation
900
x26202
1872A
Two Vessels
brute force
,
greedy
,
math
800
x36730
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x76
1870D
Prefix Purchase
greedy
,
implementation
,
sortings
1800
x6256
1870B
Friendly Arrays
bitmasks
,
greedy
,
math
1200
x13092
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x18287
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x67
1868E
Min-Sum-Max
constructive algorithms
,
dp
,
greedy
3500
x71
1868D
Flower-like Pseudotree
constructive algorithms
,
graphs
,
greedy
,
implementation
,
trees
3000
x241
1868B2
Candy Party (Hard Version)
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
implementation
,
math
2100
x2244
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6293
1867F
Most Different Tree
brute force
,
constructive algorithms
,
dfs and similar
,
greedy
,
hashing
2700
x394
1867D
Cyclic Operations
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
1800
x5233
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x10374
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1464
1866D
Digital Wallet
dp
,
greedy
2300
x1138
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