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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
44:32:21
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math
combine-tags-by-or
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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
1909F1
Small Permutation Problem (Easy Version)
brute force
,
combinatorics
,
dp
,
math
2200
x1575
1909E
Multiple Lamps
bitmasks
,
brute force
,
constructive algorithms
,
math
,
number theory
2400
x1199
1909D
Split Plus K
greedy
,
math
,
number theory
1900
x3726
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x9601
1909B
Make Almost Equal With Mod
bitmasks
,
constructive algorithms
,
math
,
number theory
1200
x13097
1909A
Distinct Buttons
implementation
,
math
800
x15426
1907C
Removal of Unattractive Pairs
constructive algorithms
,
greedy
,
math
,
strings
1200
x17881
1906M
Triangle Construction
greedy
,
math
1700
x2184
1906K
Deck-Building Game
divide and conquer
,
math
2500
x247
1905E
One-X
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
2400
x801
1905D
Cyclic MEX
data structures
,
implementation
,
math
,
two pointers
2000
x3346
1905A
Constructive Problems
constructive algorithms
,
math
800
x21372
1903E
Geo Game
greedy
,
interactive
,
math
2000
x1700
1902F
Trees and XOR Queries Again
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
implementation
,
math
,
trees
2400
x852
1902C
Insert and Equalize
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1300
x11822
1901D
Yet Another Monster Fight
binary search
,
dp
,
greedy
,
implementation
,
math
1700
x5906
1901C
Add, Divide and Floor
constructive algorithms
,
greedy
,
math
1400
x10348
1901B
Chip and Ribbon
greedy
,
math
1100
x13673
1901A
Line Trip
greedy
,
math
800
x23331
1900D
Small GCD
bitmasks
,
brute force
,
dp
,
math
,
number theory
2000
x3525
1900B
Laura and Operations
dp
,
math
900
x15514
1899D
Yarik and Musical Notes
hashing
,
math
,
number theory
1300
x11837
1899A
Game with Integers
games
,
math
,
number theory
800
x35540
1898D
Absolute Beauty
greedy
,
math
1900
x4570
1898B
Milena and Admirer
greedy
,
math
1500
x10087
1896H2
Cyclic Hamming (Hard Version)
brute force
,
dp
,
fft
,
math
,
number theory
3500
x79
1896H1
Cyclic Hamming (Easy Version)
brute force
,
divide and conquer
,
dp
,
fft
,
math
,
number theory
3400
x74
1896F
Bracket Xoring
constructive algorithms
,
greedy
,
implementation
,
math
2600
x624
1896D
Ones and Twos
binary search
,
data structures
,
divide and conquer
,
math
,
two pointers
1700
x4966
1895F
Fancy Arrays
combinatorics
,
dp
,
math
,
matrices
2600
x604
1895D
XOR Construction
bitmasks
,
constructive algorithms
,
data structures
,
math
,
string suffix structures
,
trees
1900
x5391
1895C
Torn Lucky Ticket
brute force
,
dp
,
hashing
,
implementation
,
math
1400
x9809
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x19391
1895A
Treasure Chest
math
800
x23037
1891E
Brukhovich and Exams
brute force
,
greedy
,
implementation
,
math
,
sortings
2500
x761
1891D
Suspicious logarithms
binary search
,
brute force
,
math
1900
x3625
1891B
Deja Vu
brute force
,
math
,
sortings
1100
x15169
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x6542
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x783
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1291
1886D
Monocarp and the Set
combinatorics
,
data structures
,
math
2100
x3235
1886B
Fear of the Dark
binary search
,
geometry
,
math
1200
x14852
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x24141
1884E
Hard Design
greedy
,
implementation
,
math
2800
x254
1884D
Counting Rhyme
dp
,
math
,
number theory
2100
x2707
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x11394
1884A
Simple Design
brute force
,
greedy
,
math
800
x16185
1883C
Raspberries
dp
,
math
1000
x21485
1883A
Morning
math
800
x23318
1881D
Divide and Equalize
math
,
number theory
1300
x13657
1881B
Three Threadlets
math
900
x23106
1879D
Sum of XOR Functions
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
1700
x6354
1878F
Vasilije Loves Number Theory
brute force
,
math
,
number theory
1900
x3614
1878C
Vasilije in Cacak
math
900
x27189
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x29358
1877C
Joyboard
math
,
number theory
1200
x9837
1877A
Goals of Victory
math
800
x17476
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x10529
1874E
Jellyfish and Hack
dp
,
math
3000
x241
1874D
Jellyfish and Miku
divide and conquer
,
dp
,
math
,
probabilities
2800
x624
1874C
Jellyfish and EVA
dp
,
graphs
,
greedy
,
math
,
probabilities
2300
x1474
1873F
Money Trees
binary search
,
greedy
,
math
,
two pointers
1300
x13437
1873C
Target Practice
implementation
,
math
800
x33798
1873B
Good Kid
brute force
,
greedy
,
math
800
x42862
1872G
Replace With Product
brute force
,
greedy
,
math
2000
x3875
1872F
Selling a Menagerie
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1800
x5627
1872D
Plus Minus Permutation
math
1200
x20222
1872C
Non-coprime Split
math
,
number theory
1100
x21628
1872A
Two Vessels
brute force
,
greedy
,
math
800
x36725
1870F
Lazy Numbers
binary search
,
math
2900
x459
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x10519
1870B
Friendly Arrays
bitmasks
,
greedy
,
math
1200
x13085
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x18276
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x13932
1868C
Travel Plan
combinatorics
,
dp
,
implementation
,
math
,
trees
2400
x1050
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
x6290
1867E1
Salyg1n and Array (simple version)
constructive algorithms
,
interactive
,
math
2000
x3434
1866M
Mighty Rock Tower
brute force
,
combinatorics
,
dp
,
math
,
probabilities
2400
x660
1866L
Lihmuf Balling
binary search
,
brute force
,
math
2400
x644
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7076
1866A
Ambitious Kid
math
800
x16821
1864H
Asterism Stream
dp
,
math
,
matrices
3200
x248
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2438
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6217
1864C
Divisor Chain
bitmasks
,
constructive algorithms
,
math
,
number theory
1300
x12380
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x19635
1863G
Swaps
combinatorics
,
dp
,
graphs
,
math
2800
x512
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x977
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2560
1863C
MEX Repetition
implementation
,
math
1100
x13175
1863B
Split Sort
greedy
,
math
,
sortings
1100
x14381
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2568
1862D
Ice Cream Balls
binary search
,
combinatorics
,
constructive algorithms
,
math
1300
x15694
1861E
Non-Intersecting Subpermutations
combinatorics
,
dp
,
implementation
,
math
2300
x1583
1861A
Prime Deletion
constructive algorithms
,
math
800
x22850
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x260
1860B
Fancy Coins
binary search
,
brute force
,
greedy
,
math
1200
x15743
1859E
Maximum Monogonosity
brute force
,
dp
,
math
2500
x1637
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x16077
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