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Before contest
Codeforces Round 954 (Div. 3)
6 days
→ Filter Problems
Difficulty:
—
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
Standings
Custom test
Problems
#
Name
1984A
Strange Splitting
constructive algorithms
800
x17002
1981A
Turtle and Piggy Are Playing a Game
brute force
,
greedy
,
math
800
x18484
1980B
Choosing Cubes
sortings
,
sortings
800
x29471
1980A
Problem Generator
math
800
x34129
1979A
Guess the Maximum
brute force
,
greedy
,
implementation
800
x24656
1977A
Little Nikita
math
800
x26345
1976A
Verify Password
implementation
,
sortings
,
strings
800
x24134
1975A
Bazoka and Mocha's Array
brute force
,
greedy
,
implementation
,
sortings
800
x16446
1974B
Symmetric Encoding
implementation
,
sortings
,
strings
800
x27167
1974A
Phone Desktop
greedy
,
math
800
x29581
1972A
Contest Proposal
brute force
,
greedy
,
two pointers
800
x20465
1971B
Different String
implementation
,
strings
800
x31686
1971A
My First Sorting Problem
implementation
,
sortings
800
x38279
1969A
Two Friends
constructive algorithms
,
implementation
,
math
800
x17919
1968B
Prefiquence
greedy
,
two pointers
800
x25283
1968A
Maximize?
brute force
,
math
,
number theory
800
x29992
1966A
Card Exchange
constructive algorithms
,
games
,
greedy
800
x16102
1957A
Stickogon
constructive algorithms
,
greedy
800
x21390
1956B
Nene and the Card Game
games
,
greedy
800
x19868
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x20025
1955A
Yogurt Sale
math
800
x38862
1950C
Clock Conversion
implementation
,
math
800
x36583
1950B
Upscaling
implementation
800
x34940
1950A
Stair, Peak, or Neither?
implementation
800
x46352
1948A
Special Characters
brute force
,
constructive algorithms
800
x27040
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x24506
1945A
Setting up Camp
greedy
,
math
800
x25761
1944A
Destroying Bridges
graphs
,
greedy
,
math
800
x22041
1942A
Farmer John's Challenge
constructive algorithms
,
math
800
x16255
1941A
Rudolf and the Ticket
brute force
,
math
800
x40020
1937A
Shuffle Party
implementation
,
math
800
x22038
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x26260
1934A
Too Min Too Max
greedy
,
math
800
x24059
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x30691
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x36280
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x27600
1931B
Make Equal
greedy
800
x30667
1931A
Recovering a Small String
brute force
,
strings
800
x34246
1930A
Maximise The Score
greedy
,
sortings
800
x17645
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x24232
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x29747
1928A
Rectangle Cutting
geometry
,
math
800
x21624
1927A
Make it White
greedy
,
strings
800
x40568
1926B
Vlad and Shapes
geometry
,
implementation
800
x30646
1926A
Vlad and the Best of Five
implementation
800
x43824
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x27650
1923A
Moving Chips
greedy
,
implementation
800
x23646
1922A
Tricky Template
constructive algorithms
,
implementation
,
strings
800
x26187
1921B
Arranging Cats
greedy
,
implementation
800
x32446
1921A
Square
greedy
,
math
800
x40780
1920A
Satisfying Constraints
brute force
,
greedy
,
math
800
x26828
1919B
Plus-Minus Split
greedy
800
x29059
1919A
Wallet Exchange
games
,
math
800
x32141
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x29169
1917A
Least Product
constructive algorithms
,
math
800
x24528
1916A
2023
constructive algorithms
,
implementation
,
math
,
number theory
800
x24869
1915C
Can I Square?
binary search
,
implementation
800
x38887
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x39576
1915A
Odd One Out
bitmasks
,
implementation
800
x51591
1914B
Preparing for the Contest
constructive algorithms
,
math
800
x29021
1914A
Problemsolving Log
implementation
,
strings
800
x30261
1913A
Rating Increase
implementation
800
x22678
1912L
LOL Lovers
strings
800
x6504
1909A
Distinct Buttons
implementation
,
math
800
x15892
1907A
Rook
implementation
800
x34791
1905A
Constructive Problems
constructive algorithms
,
math
800
x22130
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x26153
1902A
Binary Imbalance
constructive algorithms
800
x20107
1901A
Line Trip
greedy
,
math
800
x26702
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x23237
1899A
Game with Integers
games
,
math
,
number theory
800
x39814
1898A
Milica and String
brute force
,
implementation
,
strings
800
x15311
1896A
Jagged Swaps
sortings
800
x19950
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x19840
1895A
Treasure Chest
math
800
x23718
1894A
Secret Sport
implementation
,
strings
800
x18347
1891A
Sorting with Twos
constructive algorithms
,
sortings
800
x18649
1890B
Qingshan Loves Strings
constructive algorithms
,
implementation
800
x16896
1890A
Doremy's Paint 3
constructive algorithms
800
x22987
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x24897
1884A
Simple Design
brute force
,
greedy
,
math
800
x16717
1883A
Morning
math
800
x24394
1882A
Increasing Sequence
greedy
800
x24641
1881A
Don't Try to Count
brute force
,
strings
800
x28514
1879A
Rigged!
greedy
800
x22443
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x30330
1878A
How Much Does Daytona Cost?
greedy
800
x40223
1877A
Goals of Victory
math
800
x19984
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x33468
1873C
Target Practice
implementation
,
math
800
x36764
1873B
Good Kid
brute force
,
greedy
,
math
800
x45746
1873A
Short Sort
brute force
,
implementation
800
x50288
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37836
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x18671
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x19487
1866A
Ambitious Kid
math
800
x19073
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x19932
1863A
Channel
greedy
,
implementation
800
x17598
1862B
Sequence Game
constructive algorithms
800
x29642
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x31305
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