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Before contest
Codeforces Round 941 (Div. 1)
2 days
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*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
2 days
Register now »
*has extra registration
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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
divide and conquer
dp
dsu
expression parsing
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geometry
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implementation
interactive
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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x479096
50A
Domino piling
greedy
,
math
800
x227717
617A
Elephant
math
800
x169182
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166655
486A
Calculating Function
implementation
,
math
800
x108835
200B
Drinks
implementation
,
math
800
x107239
1328A
Divisibility Problem
math
800
x92797
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86785
1335A
Candies and Two Sisters
math
800
x78300
1352A
Sum of Round Numbers
implementation
,
math
800
x71419
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70493
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70334
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66917
581A
Vasya the Hipster
implementation
,
math
800
x66851
1154A
Restoring Three Numbers
math
800
x66095
151A
Soft Drinking
implementation
,
math
800
x65392
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62243
758A
Holiday Of Equality
implementation
,
math
800
x56991
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x56807
1343B
Balanced Array
constructive algorithms
,
math
800
x53482
9A
Die Roll
math
,
probabilities
800
x52265
1374A
Required Remainder
math
800
x50421
1367B
Even Array
greedy
,
math
800
x50062
1624A
Plus One on the Subset
math
800
x49567
1433A
Boring Apartments
implementation
,
math
800
x49100
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48540
1551A
Polycarp and Coins
greedy
,
math
800
x48175
1360A
Minimal Square
greedy
,
math
800
x47863
1472B
Fair Division
dp
,
greedy
,
math
800
x47276
1283A
Minutes Before the New Year
math
800
x46336
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46278
1426A
Floor Number
implementation
,
math
800
x45367
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44849
1371A
Magical Sticks
math
800
x44162
1294A
Collecting Coins
math
800
x44123
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x43898
1873B
Good Kid
brute force
,
greedy
,
math
800
x43780
1857A
Array Coloring
greedy
,
math
800
x43076
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x42671
1542A
Odd Set
math
800
x42084
1472A
Cards for Friends
greedy
,
math
800
x40737
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40593
233A
Perfect Permutation
implementation
,
math
800
x40282
1921A
Square
greedy
,
math
800
x39600
1296A
Array with Odd Sum
math
800
x39327
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x38882
1729A
Two Elevators
math
800
x38738
1941A
Rudolf and the Ticket
brute force
,
math
800
x38313
1348A
Phoenix and Balance
greedy
,
math
800
x38294
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x38206
1358A
Park Lighting
greedy
,
math
800
x38014
1579A
Casimir's String Solitaire
math
,
strings
800
x37707
1385A
Three Pairwise Maximums
math
800
x37483
1899A
Game with Integers
games
,
math
,
number theory
800
x37183
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37102
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36631
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x35907
1537A
Arithmetic Array
greedy
,
math
800
x35858
1369A
FashionabLee
geometry
,
math
800
x35515
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35504
1593A
Elections
math
800
x35422
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x34992
1660A
Vasya and Coins
greedy
,
math
800
x34928
1873C
Target Practice
implementation
,
math
800
x34793
1560B
Who's Opposite?
math
800
x34628
1858A
Buttons
games
,
greedy
,
math
800
x33914
1955A
Yogurt Sale
math
800
x33547
1950C
Clock Conversion
implementation
,
math
800
x33469
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32796
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x32703
822A
I'm bored with life
implementation
,
math
,
number theory
800
x31593
1919A
Wallet Exchange
games
,
math
800
x31554
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31476
1675A
Food for Animals
greedy
,
math
800
x31396
1716A
2-3 Moves
greedy
,
math
800
x31286
1846A
Rudolph and Cut the Rope
implementation
,
math
800
x31267
1549A
Gregor and Cryptography
math
,
number theory
800
x31247
1538B
Friends and Candies
greedy
,
math
800
x30964
1843C
Sum in Binary Tree
bitmasks
,
combinatorics
,
math
,
trees
800
x30937
1490A
Dense Array
greedy
,
math
800
x30566
1611A
Make Even
constructive algorithms
,
math
800
x30528
1506A
Strange Table
math
800
x30069
1553A
Digits Sum
math
,
number theory
800
x30052
1619B
Squares and Cubes
implementation
,
math
800
x29985
1811A
Insert Digit
greedy
,
math
,
strings
800
x29927
1547A
Shortest Path with Obstacle
implementation
,
math
800
x29831
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x29778
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x29698
1519B
The Cake Is a Lie
dp
,
math
800
x29671
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x29525
1622A
Construct a Rectangle
geometry
,
math
800
x29416
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x29346
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x29039
1077A
Frog Jumping
math
800
x29001
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x28925
1837A
Grasshopper on a Line
constructive algorithms
,
math
800
x28916
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
x28641
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x28572
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x28524
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