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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
37:55:12
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Difficulty:
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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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Status
Standings
Custom test
Problems
#
Name
1093A
Dice Rolling
math
800
x17380
805A
Fake NP
greedy
,
math
1000
x17368
1355D
Game With Array
constructive algorithms
,
math
1400
x17334
1656B
Subtract Operation
data structures
,
greedy
,
math
,
two pointers
1100
x17324
1372C
Omkar and Baseball
constructive algorithms
,
math
1500
x17269
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x17268
1844B
Permutations & Primes
constructive algorithms
,
math
1000
x17258
1091A
New Year and the Christmas Ornament
brute force
,
implementation
,
math
800
x17153
1496B
Max and Mex
math
1100
x17140
664A
Complicated GCD
math
,
number theory
800
x17084
1827A
Counting Orders
combinatorics
,
math
,
sortings
,
two pointers
1100
x17063
1204B
Mislove Has Lost an Array
greedy
,
math
900
x17049
1783B
Matrix of Differences
constructive algorithms
,
math
1100
x17032
1810B
Candies
constructive algorithms
,
math
,
number theory
800
x17028
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x17023
1736B
Playing with GCD
math
,
number theory
1200
x17003
1504B
Flip the Bits
constructive algorithms
,
greedy
,
implementation
,
math
1200
x16992
1440B
Sum of Medians
greedy
,
math
900
x16985
1839A
The Good Array
greedy
,
implementation
,
math
800
x16981
1332B
Composite Coloring
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1400
x16949
1358C
Celex Update
math
1600
x16921
1113A
Sasha and His Trip
dp
,
greedy
,
math
900
x16907
1574B
Combinatorics Homework
combinatorics
,
greedy
,
math
1100
x16905
1625A
Ancient Civilization
bitmasks
,
greedy
,
math
800
x16880
1866A
Ambitious Kid
math
800
x16827
1255A
Changing Volume
math
800
x16819
1759C
Thermostat
greedy
,
math
,
shortest paths
1100
x16816
1362C
Johnny and Another Rating Drop
bitmasks
,
greedy
,
math
1400
x16795
1427A
Avoiding Zero
math
,
sortings
900
x16760
1487D
Pythagorean Triples
binary search
,
brute force
,
math
,
number theory
1500
x16748
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x16715
1459A
Red-Blue Shuffle
math
,
probabilities
800
x16704
1176B
Merge it!
math
1100
x16701
1047B
Cover Points
geometry
,
math
900
x16691
1850F
We Were Both Children
brute force
,
implementation
,
math
,
number theory
1300
x16681
1843D
Apple Tree
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
1200
x16675
1713C
Build Permutation
constructive algorithms
,
dp
,
math
1200
x16670
1750A
Indirect Sort
constructive algorithms
,
implementation
,
math
800
x16667
1669E
2-Letter Strings
data structures
,
math
,
strings
1200
x16629
1288B
Yet Another Meme Problem
math
1100
x16623
1407B
Big Vova
brute force
,
greedy
,
math
,
number theory
1300
x16621
1101A
Minimum Integer
math
1000
x16616
1945B
Fireworks
math
,
number theory
900
x16593
1495A
Diamond Miner
geometry
,
greedy
,
math
,
sortings
1200
x16564
1485B
Replace and Keep Sorted
dp
,
implementation
,
math
1200
x16561
1609A
Divide and Multiply
greedy
,
implementation
,
math
,
number theory
900
x16555
1270A
Card Game
games
,
greedy
,
math
800
x16530
1659A
Red Versus Blue
constructive algorithms
,
greedy
,
implementation
,
math
1000
x16519
1279A
New Year Garland
math
900
x16517
1777B
Emordnilap
combinatorics
,
greedy
,
math
900
x16466
1731B
Kill Demodogs
greedy
,
math
1100
x16445
1734C
Removing Smallest Multiples
greedy
,
math
1200
x16444
1789A
Serval and Mocha's Array
brute force
,
math
,
number theory
800
x16428
1248B
Grow The Tree
greedy
,
math
,
sortings
900
x16402
1051B
Relatively Prime Pairs
greedy
,
math
,
number theory
1000
x16379
1922C
Closest Cities
greedy
,
implementation
,
math
1300
x16352
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x16331
1351B
Square?
brute force
,
implementation
,
math
900
x16327
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x16317
1916C
Training Before the Olympiad
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1200
x16314
1497C2
k-LCM (hard version)
constructive algorithms
,
math
1600
x16268
1853B
Fibonaccharsis
binary search
,
brute force
,
math
1200
x16253
1221A
2048 Game
brute force
,
greedy
,
math
1000
x16253
1788C
Matching Numbers
constructive algorithms
,
greedy
,
math
1300
x16229
1668B
Social Distance
greedy
,
math
,
sortings
900
x16226
1780B
GCD Partition
brute force
,
greedy
,
math
,
number theory
1100
x16224
1208A
XORinacci
math
900
x16204
1884A
Simple Design
brute force
,
greedy
,
math
800
x16186
1249B2
Books Exchange (hard version)
dfs and similar
,
dsu
,
math
1300
x16149
1607D
Blue-Red Permutation
greedy
,
math
,
sortings
1300
x16146
1428A
Box is Pull
math
800
x16126
1706B
Making Towers
dp
,
greedy
,
math
1100
x16122
1462D
Add to Neighbour and Remove
greedy
,
math
,
number theory
1400
x16093
1154B
Make Them Equal
math
1200
x16085
1668A
Direction Change
implementation
,
math
800
x16081
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x16079
1196B
Odd Sum Segments
constructive algorithms
,
math
1200
x16060
1443A
Kids Seating
constructive algorithms
,
math
800
x16056
1352F
Binary String Reconstruction
constructive algorithms
,
dfs and similar
,
math
1500
x16032
1848A
Vika and Her Friends
games
,
math
900
x16017
496A
Minimum Difficulty
brute force
,
implementation
,
math
900
x16012
1603A
Di-visible Confusion
constructive algorithms
,
math
,
number theory
1300
x15992
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x15984
573A
Bear and Poker
implementation
,
math
,
number theory
1300
x15976
1334C
Circle of Monsters
brute force
,
constructive algorithms
,
greedy
,
math
1600
x15970
1419B
Stairs
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
1200
x15907
456B
Fedya and Maths
math
,
number theory
1200
x15880
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x15877
1270B
Interesting Subarray
constructive algorithms
,
greedy
,
math
1200
x15850
401A
Vanya and Cards
implementation
,
math
800
x15833
1829F
Forever Winter
dfs and similar
,
graphs
,
math
1300
x15825
1263A
Sweet Problem
math
1100
x15789
1194A
Remove a Progression
math
800
x15781
1672A
Log Chopping
games
,
implementation
,
math
800
x15766
1584C
Two Arrays
greedy
,
math
,
sortings
900
x15764
1860B
Fancy Coins
binary search
,
brute force
,
greedy
,
math
1200
x15743
1349A
Orac and LCM
data structures
,
math
,
number theory
1600
x15738
1236A
Stones
brute force
,
greedy
,
math
800
x15731
1823A
A-characteristic
combinatorics
,
constructive algorithms
,
math
800
x15722
1458A
Row GCD
math
,
number theory
1600
x15710
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