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Before contest
Codeforces Round 995 (Div. 3)
02:31:01
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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
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strings
ternary search
trees
two pointers
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Problems
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Name
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x38693
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x30232
1931B
Make Equal
greedy
800
x32687
1931A
Recovering a Small String
brute force
,
strings
800
x36746
1930A
Maximise The Score
greedy
,
sortings
800
x18893
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x25527
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x31965
1928A
Rectangle Cutting
geometry
,
math
800
x22986
1927A
Make it White
greedy
,
strings
800
x44425
1926B
Vlad and Shapes
geometry
,
implementation
800
x33217
1926A
Vlad and the Best of Five
implementation
800
x50160
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x29185
1923A
Moving Chips
greedy
,
implementation
800
x24974
1922A
Tricky Template
constructive algorithms
,
implementation
,
strings
800
x27360
1921B
Arranging Cats
greedy
,
implementation
800
x34147
1921A
Square
greedy
,
math
800
x44157
1920A
Satisfying Constraints
brute force
,
greedy
,
math
800
x28073
1919B
Plus-Minus Split
greedy
800
x29949
1919A
Wallet Exchange
games
,
math
800
x33731
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x30547
1917A
Least Product
constructive algorithms
,
math
800
x25731
1916A
2023
constructive algorithms
,
implementation
,
math
,
number theory
800
x26308
1915C
Can I Square?
binary search
,
implementation
800
x44338
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x43327
1915A
Odd One Out
bitmasks
,
implementation
800
x60117
1914B
Preparing for the Contest
constructive algorithms
,
math
800
x30870
1914A
Problemsolving Log
implementation
,
strings
800
x32289
1913A
Rating Increase
implementation
800
x25468
1912L
LOL Lovers
strings
800
x7268
1909A
Distinct Buttons
implementation
,
math
800
x18087
1907A
Rook
implementation
800
x37382
1905A
Constructive Problems
constructive algorithms
,
math
800
x23201
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x35266
1902A
Binary Imbalance
constructive algorithms
800
x21409
1901A
Line Trip
greedy
,
math
800
x35134
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x30239
1899A
Game with Integers
games
,
math
,
number theory
800
x49440
1898A
Milica and String
brute force
,
implementation
,
strings
800
x16222
1896A
Jagged Swaps
sortings
800
x26253
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x20619
1895A
Treasure Chest
math
800
x24632
1894A
Secret Sport
implementation
,
strings
800
x19145
1891A
Sorting with Twos
constructive algorithms
,
sortings
800
x19415
1890B
Qingshan Loves Strings
constructive algorithms
,
implementation
800
x17707
1890A
Doremy's Paint 3
constructive algorithms
800
x28651
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x26120
1884A
Simple Design
brute force
,
greedy
,
math
800
x17662
1883A
Morning
math
800
x26126
1882A
Increasing Sequence
greedy
800
x25603
1881A
Don't Try to Count
brute force
,
strings
800
x33738
1879A
Rigged!
greedy
800
x23331
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x31926
1878A
How Much Does Daytona Cost?
greedy
800
x46812
1877A
Goals of Victory
math
800
x25206
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x36138
1873C
Target Practice
implementation
,
math
800
x42945
1873B
Good Kid
brute force
,
greedy
,
math
800
x50642
1873A
Short Sort
brute force
,
implementation
800
x56622
1872A
Two Vessels
brute force
,
greedy
,
math
800
x39677
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x19280
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x20212
1866A
Ambitious Kid
math
800
x24026
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x20473
1863A
Channel
greedy
,
implementation
800
x18024
1862B
Sequence Game
constructive algorithms
800
x33667
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x32938
1861A
Prime Deletion
constructive algorithms
,
math
800
x24100
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x34110
1858A
Buttons
games
,
greedy
,
math
800
x40603
1857A
Array Coloring
greedy
,
math
800
x50504
1856A
Tales of a Sort
implementation
800
x26800
1855A
Dalton the Teacher
greedy
,
math
800
x28342
1853A
Desorting
brute force
,
greedy
,
math
800
x33501
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x29728
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x29857
1850C
Word on the Paper
implementation
,
strings
800
x45698
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x43862
1850A
To My Critics
implementation
,
sortings
800
x58855
1849A
Morning Sandwich
implementation
,
math
800
x29964
1847A
The Man who became a God
greedy
,
sortings
800
x22110
1846B
Rudolph and Tic-Tac-Toe
brute force
,
implementation
,
strings
800
x27106
1846A
Rudolph and Cut the Rope
implementation
,
math
800
x32720
1845A
Forbidden Integer
constructive algorithms
,
implementation
,
math
,
number theory
800
x28807
1844A
Subtraction Game
constructive algorithms
,
games
800
x24756
1843C
Sum in Binary Tree
bitmasks
,
combinatorics
,
math
,
trees
800
x34014
1843B
Long Long
greedy
,
math
,
two pointers
800
x29441
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x34713
1842A
Tenzing and Tsondu
games
,
math
800
x19950
1841A
Game with Board
constructive algorithms
,
games
800
x24866
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x34578
1839A
The Good Array
greedy
,
implementation
,
math
800
x17597
1838A
Blackboard List
constructive algorithms
,
math
800
x21690
1837A
Grasshopper on a Line
constructive algorithms
,
math
800
x34085
1836A
Destroyer
implementation
,
sortings
800
x20475
1834A
Unit Array
greedy
,
math
800
x25818
1833C
Vlad Building Beautiful Array
greedy
,
math
800
x26362
1833A
Musical Puzzle
implementation
,
strings
800
x32965
1832A
New Palindrome
strings
800
x26053
1831A
Twin Permutations
constructive algorithms
800
x28209
1829C
Mr. Perfectly Fine
bitmasks
,
greedy
,
implementation
800
x29201
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