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Before contest
Codeforces Round 941 (Div. 1)
2 days
Register now »
*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
2 days
Register now »
*has extra registration
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greedy
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
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strings
ternary search
trees
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Problems
#
Name
1366A
Shovels and Swords
binary search
,
greedy
,
math
1100
x28877
1359A
Berland Poker
brute force
,
greedy
,
math
1000
x28714
1919B
Plus-Minus Split
greedy
800
x28703
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28664
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28643
349A
Cinema Line
greedy
,
implementation
1100
x28630
1551B1
Wonderful Coloring - 1
greedy
,
strings
800
x28599
1631A
Min Max Swap
greedy
800
x28593
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x28573
1554A
Cherry
greedy
800
x28546
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28517
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x28471
479C
Exams
greedy
,
sortings
1400
x28459
1409B
Minimum Product
brute force
,
greedy
,
math
1100
x28196
1397A
Juggling Letters
greedy
,
strings
800
x28085
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x27944
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x27938
1843B
Long Long
greedy
,
math
,
two pointers
800
x27912
1768A
Greatest Convex
greedy
,
math
,
number theory
800
x27880
1537B
Bad Boy
constructive algorithms
,
greedy
,
math
900
x27825
1853A
Desorting
brute force
,
greedy
,
math
800
x27710
1399C
Boats Competition
brute force
,
greedy
,
two pointers
1200
x27691
1550A
Find The Array
greedy
,
math
800
x27604
1915D
Unnatural Language Processing
greedy
,
implementation
,
strings
900
x27359
1633B
Minority
greedy
800
x27184
1511A
Review Site
greedy
800
x27130
276B
Little Girl and Game
games
,
greedy
1300
x27124
1421A
XORwice
bitmasks
,
greedy
,
math
800
x27087
1792A
GamingForces
greedy
,
sortings
800
x27085
1855A
Dalton the Teacher
greedy
,
math
800
x27067
1921C
Sending Messages
greedy
,
math
900
x27063
1359B
New Theatre Square
brute force
,
dp
,
greedy
,
implementation
,
two pointers
1000
x27031
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x26994
1829C
Mr. Perfectly Fine
bitmasks
,
greedy
,
implementation
800
x26959
1702B
Polycarp Writes a String from Memory
greedy
800
x26852
1324C
Frog Jumps
binary search
,
data structures
,
dfs and similar
,
greedy
,
implementation
1100
x26817
1791D
Distinct Split
brute force
,
greedy
,
strings
1000
x26674
1790B
Taisia and Dice
greedy
,
greedy
,
math
800
x26595
1721A
Image
greedy
,
implementation
800
x26559
1872B
The Corridor or There and Back Again
greedy
,
implementation
900
x26467
1469A
Regular Bracket Sequence
constructive algorithms
,
greedy
1000
x26439
1920A
Satisfying Constraints
brute force
,
greedy
,
math
800
x26349
1837B
Comparison String
greedy
900
x26340
1433C
Dominant Piranha
constructive algorithms
,
greedy
900
x26316
1744A
Number Replacement
greedy
,
implementation
800
x26276
1543A
Exciting Bets
greedy
,
math
,
number theory
900
x26265
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x26253
1537C
Challenging Cliffs
constructive algorithms
,
greedy
,
implementation
,
math
1200
x26238
1474B
Different Divisors
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1000
x26203
545C
Woodcutters
dp
,
greedy
1500
x26150
1385C
Make It Good
greedy
1200
x26106
1372B
Omkar and Last Class of Math
greedy
,
math
,
number theory
1300
x26040
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x25981
1391B
Fix You
brute force
,
greedy
,
implementation
800
x25976
1469B
Red and Blue
dp
,
greedy
1000
x25971
1547B
Alphabetical Strings
greedy
,
implementation
,
strings
800
x25922
1941B
Rudolf and 121
brute force
,
dp
,
greedy
,
math
1000
x25920
1373A
Donut Shops
greedy
,
implementation
,
math
1000
x25746
1931C
Make Equal Again
brute force
,
greedy
,
math
1000
x25731
1478A
Nezzar and Colorful Balls
brute force
,
greedy
800
x25675
1550B
Maximum Cost Deletion
greedy
,
math
1000
x25646
1833C
Vlad Building Beautiful Array
greedy
,
math
800
x25448
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x25391
1697B
Promo
greedy
,
sortings
900
x25375
1697A
Parkway Walk
greedy
,
implementation
800
x25368
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x25366
1690C
Restoring the Duration of Tasks
data structures
,
greedy
,
implementation
800
x25338
1833B
Restore the Weather
greedy
,
sortings
900
x25288
1927C
Choose the Different Ones!
brute force
,
greedy
,
math
1000
x25283
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25260
1562A
The Miracle and the Sleeper
greedy
,
math
800
x25164
1334B
Middle Class
greedy
,
sortings
1100
x25128
1517A
Sum of 2050
greedy
,
math
800
x25073
1593B
Make it Divisible by 25
dfs and similar
,
dp
,
greedy
,
math
,
math
900
x25045
515C
Drazil and Factorial
greedy
,
math
,
sortings
1400
x24886
1355B
Young Explorers
dp
,
greedy
,
sortings
1200
x24825
439A
Devu, the Singer and Churu, the Joker
greedy
,
implementation
900
x24813
1705A
Mark the Photographer
greedy
,
sortings
800
x24784
1486A
Shifting Stacks
greedy
,
implementation
900
x24754
1901A
Line Trip
greedy
,
math
800
x24723
1481A
Space Navigation
greedy
,
strings
800
x24630
1690B
Array Decrements
greedy
,
implementation
800
x24579
1358B
Maria Breaks the Self-isolation
greedy
,
sortings
1000
x24571
1675B
Make It Increasing
greedy
,
implementation
900
x24529
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24525
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x24498
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x24492
1041A
Heist
greedy
,
implementation
,
sortings
800
x24435
1471A
Strange Partition
greedy
,
math
,
number theory
900
x24403
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24319
1747A
Two Groups
constructive algorithms
,
greedy
800
x24302
1882A
Increasing Sequence
greedy
800
x24158
1525B
Permutation Sort
constructive algorithms
,
greedy
900
x24154
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24086
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24040
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24014
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x24006
1624C
Division by Two and Permutation
constructive algorithms
,
flows
,
graph matchings
,
greedy
,
math
1100
x23968
545D
Queue
greedy
,
implementation
,
sortings
1300
x23923
1945A
Setting up Camp
greedy
,
math
800
x23900
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