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Before contest
Codeforces Round 941 (Div. 1)
29:13:47
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*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
29:13:47
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math
combine-tags-by-or
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2-sat
binary search
bitmasks
brute force
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combinatorics
constructive algorithms
data structures
dfs and similar
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dp
dsu
expression parsing
fft
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games
geometry
graph matchings
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greedy
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implementation
interactive
math
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Problems
#
Name
4A
Watermelon
brute force
,
math
800
x479339
50A
Domino piling
greedy
,
math
800
x227800
617A
Elephant
math
800
x169304
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166742
486A
Calculating Function
implementation
,
math
800
x108879
200B
Drinks
implementation
,
math
800
x107287
1328A
Divisibility Problem
math
800
x92850
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86809
1335A
Candies and Two Sisters
math
800
x78343
1352A
Sum of Round Numbers
implementation
,
math
800
x71476
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70528
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70371
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66958
581A
Vasya the Hipster
implementation
,
math
800
x66883
1154A
Restoring Three Numbers
math
800
x66127
151A
Soft Drinking
implementation
,
math
800
x65435
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62274
758A
Holiday Of Equality
implementation
,
math
800
x57023
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x56825
1343B
Balanced Array
constructive algorithms
,
math
800
x53501
9A
Die Roll
math
,
probabilities
800
x52290
1374A
Required Remainder
math
800
x50432
1367B
Even Array
greedy
,
math
800
x50081
1624A
Plus One on the Subset
math
800
x49590
1433A
Boring Apartments
implementation
,
math
800
x49116
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48555
1551A
Polycarp and Coins
greedy
,
math
800
x48197
1360A
Minimal Square
greedy
,
math
800
x47875
1472B
Fair Division
dp
,
greedy
,
math
800
x47301
1283A
Minutes Before the New Year
math
800
x46355
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46294
1426A
Floor Number
implementation
,
math
800
x45384
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44883
1371A
Magical Sticks
math
800
x44174
1294A
Collecting Coins
math
800
x44139
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x43914
1873B
Good Kid
brute force
,
greedy
,
math
800
x43804
1857A
Array Coloring
greedy
,
math
800
x43114
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x42681
1542A
Odd Set
math
800
x42094
1472A
Cards for Friends
greedy
,
math
800
x40751
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40603
233A
Perfect Permutation
implementation
,
math
800
x40294
1921A
Square
greedy
,
math
800
x39629
1296A
Array with Odd Sum
math
800
x39342
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x38890
1729A
Two Elevators
math
800
x38765
1941A
Rudolf and the Ticket
brute force
,
math
800
x38367
1348A
Phoenix and Balance
greedy
,
math
800
x38302
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x38220
1358A
Park Lighting
greedy
,
math
800
x38021
1579A
Casimir's String Solitaire
math
,
strings
800
x37718
1385A
Three Pairwise Maximums
math
800
x37487
1899A
Game with Integers
games
,
math
,
number theory
800
x37239
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37117
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36663
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x35915
1537A
Arithmetic Array
greedy
,
math
800
x35870
1369A
FashionabLee
geometry
,
math
800
x35516
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35513
1593A
Elections
math
800
x35438
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35030
1660A
Vasya and Coins
greedy
,
math
800
x34942
1873C
Target Practice
implementation
,
math
800
x34825
1560B
Who's Opposite?
math
800
x34632
1858A
Buttons
games
,
greedy
,
math
800
x33936
1955A
Yogurt Sale
math
800
x33816
1950C
Clock Conversion
implementation
,
math
800
x33575
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32803
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x32720
822A
I'm bored with life
implementation
,
math
,
number theory
800
x31606
1919A
Wallet Exchange
games
,
math
800
x31568
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31485
1675A
Food for Animals
greedy
,
math
800
x31400
1716A
2-3 Moves
greedy
,
math
800
x31299
1846A
Rudolph and Cut the Rope
implementation
,
math
800
x31280
1549A
Gregor and Cryptography
math
,
number theory
800
x31255
1538B
Friends and Candies
greedy
,
math
800
x30968
1843C
Sum in Binary Tree
bitmasks
,
combinatorics
,
math
,
trees
800
x30947
1490A
Dense Array
greedy
,
math
800
x30575
1611A
Make Even
constructive algorithms
,
math
800
x30536
1506A
Strange Table
math
800
x30073
1553A
Digits Sum
math
,
number theory
800
x30054
1619B
Squares and Cubes
implementation
,
math
800
x29988
1811A
Insert Digit
greedy
,
math
,
strings
800
x29940
1547A
Shortest Path with Obstacle
implementation
,
math
800
x29835
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x29789
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x29707
1519B
The Cake Is a Lie
dp
,
math
800
x29676
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x29547
1622A
Construct a Rectangle
geometry
,
math
800
x29416
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x29348
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x29061
1077A
Frog Jumping
math
800
x29020
1837A
Grasshopper on a Line
constructive algorithms
,
math
800
x28931
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x28929
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28678
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28662
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x28592
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x28535
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