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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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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
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Status
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Custom test
Problems
#
Name
1829A
Love Story
implementation
,
strings
800
x46223
1426A
Floor Number
implementation
,
math
800
x45721
1703B
ICPC Balloons
data structures
,
implementation
800
x45686
1676B
Equal Candies
greedy
,
math
,
sortings
800
x45406
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44761
1873B
Good Kid
brute force
,
greedy
,
math
800
x44684
1950A
Stair, Peak, or Neither?
implementation
800
x44560
1294A
Collecting Coins
math
800
x44477
1371A
Magical Sticks
math
800
x44443
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x44385
1772A
A+B?
implementation
800
x44297
1857A
Array Coloring
greedy
,
math
800
x43847
1722B
Colourblindness
implementation
800
x43444
731A
Night at the Museum
implementation
,
strings
800
x43361
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x43040
1926A
Vlad and the Best of Five
implementation
800
x42514
1542A
Odd Set
math
800
x42468
1399B
Gifts Fixing
greedy
800
x42457
1791B
Following Directions
geometry
,
implementation
800
x42035
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41967
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x41699
935A
Fafa and his Company
brute force
,
implementation
800
x41637
1850C
Word on the Paper
implementation
,
strings
800
x41375
1829B
Blank Space
implementation
800
x41133
1472A
Cards for Friends
greedy
,
math
800
x40976
1791C
Prepend and Append
implementation
,
two pointers
800
x40886
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40759
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40597
233A
Perfect Permutation
implementation
,
math
800
x40588
1921A
Square
greedy
,
math
800
x40162
1669B
Triple
implementation
,
sortings
800
x40160
1462A
Favorite Sequence
implementation
,
two pointers
800
x40113
1927A
Make it White
greedy
,
strings
800
x39943
1807B
Grab the Candies
greedy
800
x39939
1296A
Array with Odd Sum
math
800
x39654
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x39370
1941A
Rudolf and the Ticket
brute force
,
math
800
x39205
1878A
How Much Does Daytona Cost?
greedy
800
x39177
1729A
Two Elevators
math
800
x39053
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x39053
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x38813
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x38559
1348A
Phoenix and Balance
greedy
,
math
800
x38442
1899A
Game with Integers
games
,
math
,
number theory
800
x38414
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x38325
1358A
Park Lighting
greedy
,
math
800
x38213
1579A
Casimir's String Solitaire
math
,
strings
800
x37891
1915C
Can I Square?
binary search
,
implementation
800
x37882
1385A
Three Pairwise Maximums
math
800
x37659
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37450
509A
Maximum in Table
brute force
,
implementation
800
x37328
1955A
Yogurt Sale
math
800
x37226
1097A
Gennady and a Card Game
brute force
,
implementation
800
x37161
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36962
1385B
Restore the Permutation by Merger
greedy
800
x36341
1186A
Vus the Cossack and a Contest
implementation
800
x36322
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x36209
1537A
Arithmetic Array
greedy
,
math
800
x36170
1607A
Linear Keyboard
implementation
,
strings
800
x36165
1538A
Stone Game
brute force
,
dp
,
greedy
800
x35830
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35736
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x35702
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35668
1369A
FashionabLee
geometry
,
math
800
x35662
1873C
Target Practice
implementation
,
math
800
x35657
1593A
Elections
math
800
x35633
1950C
Clock Conversion
implementation
,
math
800
x35425
1760C
Advantage
data structures
,
implementation
,
sortings
800
x35192
1660A
Vasya and Coins
greedy
,
math
800
x35128
978B
File Name
greedy
,
strings
800
x35110
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x34960
1560B
Who's Opposite?
math
800
x34776
265A
Colorful Stones (Simplified Edition)
implementation
800
x34597
1858A
Buttons
games
,
greedy
,
math
800
x34584
1907A
Rook
implementation
800
x34299
1703C
Cypher
brute force
,
implementation
,
strings
800
x34292
1527A
And Then There Were K
bitmasks
800
x34049
1650A
Deletions of Two Adjacent Letters
implementation
,
strings
800
x33958
1950B
Upscaling
implementation
800
x33856
214A
System of Equations
brute force
800
x33752
1931A
Recovering a Small String
brute force
,
strings
800
x33751
1702A
Round Down the Price
constructive algorithms
800
x33525
1971A
My First Sorting Problem
implementation
,
sortings
800
x33443
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x33081
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x33025
894A
QAQ
brute force
,
dp
800
x33008
1692B
All Distinct
greedy
,
sortings
800
x32909
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32904
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x32841
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x32709
1690A
Print a Pedestal (Codeforces logo?)
constructive algorithms
,
greedy
800
x32630
1692C
Where's the Bishop?
implementation
800
x32614
1921B
Arranging Cats
greedy
,
implementation
800
x32103
1633A
Div. 7
brute force
800
x31959
1919A
Wallet Exchange
games
,
math
800
x31836
822A
I'm bored with life
implementation
,
math
,
number theory
800
x31765
1833A
Musical Puzzle
implementation
,
strings
800
x31665
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31639
540A
Combination Lock
implementation
800
x31639
1675A
Food for Animals
greedy
,
math
800
x31632
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