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Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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math
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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Status
Standings
Custom test
Problems
#
Name
1790B
Taisia and Dice
greedy
,
greedy
,
math
800
x26719
1398A
Bad Triangle
geometry
,
math
800
x27020
1849A
Morning Sandwich
implementation
,
math
800
x27112
1855A
Dalton the Teacher
greedy
,
math
800
x27251
1234A
Equalize Prices Again
math
800
x27299
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x27304
1285A
Mezo Playing Zoma
math
800
x27328
1421A
XORwice
bitmasks
,
greedy
,
math
800
x27369
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x27476
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x27498
1660B
Vlad and Candies
math
800
x27572
1550A
Find The Array
greedy
,
math
800
x27691
1788A
One and Two
brute force
,
implementation
,
math
800
x27806
1968A
Maximize?
brute force
,
math
,
number theory
800
x27831
1768A
Greatest Convex
greedy
,
math
,
number theory
800
x28067
1843B
Long Long
greedy
,
math
,
two pointers
800
x28121
1853A
Desorting
brute force
,
greedy
,
math
800
x28288
1519A
Red and Blue Beans
math
800
x28335
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x28576
1611B
Team Composition: Programmers and Mathematicians
binary search
,
constructive algorithms
,
math
800
x28598
1914B
Preparing for the Contest
constructive algorithms
,
math
800
x28689
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x28706
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x28849
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28919
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x29090
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x29095
1077A
Frog Jumping
math
800
x29161
1837A
Grasshopper on a Line
constructive algorithms
,
math
800
x29327
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x29410
1622A
Construct a Rectangle
geometry
,
math
800
x29509
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x29545
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x29905
1547A
Shortest Path with Obstacle
implementation
,
math
800
x29927
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x29968
1519B
The Cake Is a Lie
dp
,
math
800
x30082
1619B
Squares and Cubes
implementation
,
math
800
x30115
1811A
Insert Digit
greedy
,
math
,
strings
800
x30121
1506A
Strange Table
math
800
x30139
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x30168
1553A
Digits Sum
math
,
number theory
800
x30212
1490A
Dense Array
greedy
,
math
800
x30681
1611A
Make Even
constructive algorithms
,
math
800
x30735
1538B
Friends and Candies
greedy
,
math
800
x31078
1843C
Sum in Binary Tree
bitmasks
,
combinatorics
,
math
,
trees
800
x31224
1549A
Gregor and Cryptography
math
,
number theory
800
x31444
1846A
Rudolph and Cut the Rope
implementation
,
math
800
x31459
1716A
2-3 Moves
greedy
,
math
800
x31524
1675A
Food for Animals
greedy
,
math
800
x31637
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31641
822A
I'm bored with life
implementation
,
math
,
number theory
800
x31771
1919A
Wallet Exchange
games
,
math
800
x31847
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32907
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x33035
1858A
Buttons
games
,
greedy
,
math
800
x34613
1560B
Who's Opposite?
math
800
x34783
1660A
Vasya and Coins
greedy
,
math
800
x35131
1950C
Clock Conversion
implementation
,
math
800
x35456
1593A
Elections
math
800
x35641
1369A
FashionabLee
geometry
,
math
800
x35664
1873C
Target Practice
implementation
,
math
800
x35682
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35693
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35743
1537A
Arithmetic Array
greedy
,
math
800
x36177
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x36221
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36967
1955A
Yogurt Sale
math
800
x37288
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37459
1385A
Three Pairwise Maximums
math
800
x37667
1579A
Casimir's String Solitaire
math
,
strings
800
x37892
1358A
Park Lighting
greedy
,
math
800
x38223
1348A
Phoenix and Balance
greedy
,
math
800
x38446
1899A
Game with Integers
games
,
math
,
number theory
800
x38449
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x38573
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x39061
1729A
Two Elevators
math
800
x39062
1941A
Rudolf and the Ticket
brute force
,
math
800
x39231
1296A
Array with Odd Sum
math
800
x39669
1921A
Square
greedy
,
math
800
x40178
233A
Perfect Permutation
implementation
,
math
800
x40597
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40762
1472A
Cards for Friends
greedy
,
math
800
x40981
1542A
Odd Set
math
800
x42481
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x43053
1857A
Array Coloring
greedy
,
math
800
x43883
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x44398
1371A
Magical Sticks
math
800
x44451
1294A
Collecting Coins
math
800
x44487
1873B
Good Kid
brute force
,
greedy
,
math
800
x44702
1676B
Equal Candies
greedy
,
math
,
sortings
800
x45423
1426A
Floor Number
implementation
,
math
800
x45729
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46770
1283A
Minutes Before the New Year
math
800
x46824
1472B
Fair Division
dp
,
greedy
,
math
800
x47723
1360A
Minimal Square
greedy
,
math
800
x48211
1551A
Polycarp and Coins
greedy
,
math
800
x48620
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x49091
1433A
Boring Apartments
implementation
,
math
800
x49508
1624A
Plus One on the Subset
math
800
x49941
1367B
Even Array
greedy
,
math
800
x50549
1374A
Required Remainder
math
800
x50822
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