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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
→ Filter Problems
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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
string suffix structures
strings
ternary search
trees
two pointers
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Problems
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Status
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Custom test
Problems
#
Name
1791A
Codeforces Checking
implementation
,
strings
800
x54470
455A
Boredom
dp
1500
x53989
1343B
Balanced Array
constructive algorithms
,
math
800
x53485
313A
Ilya and Bank Account
implementation
,
number theory
900
x53389
703A
Mishka and Game
implementation
800
x53360
1760A
Medium Number
implementation
,
sortings
800
x53163
9A
Die Roll
math
,
probabilities
800
x52270
43A
Football
strings
1000
x51848
431A
Black Square
implementation
800
x51180
1850A
To My Critics
implementation
,
sortings
800
x50585
1374A
Required Remainder
math
800
x50424
1367B
Even Array
greedy
,
math
800
x50066
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50057
1624A
Plus One on the Subset
math
800
x49574
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49443
1352C
K-th Not Divisible by n
binary search
,
math
1200
x49441
80A
Panoramix's Prediction
brute force
800
x49269
1433A
Boring Apartments
implementation
,
math
800
x49104
1915A
Odd One Out
bitmasks
,
implementation
800
x48992
363B
Fence
brute force
,
dp
1100
x48954
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48543
34B
Sale
greedy
,
sortings
900
x48375
1873A
Short Sort
brute force
,
implementation
800
x48227
1551A
Polycarp and Coins
greedy
,
math
800
x48179
1619A
Square String?
implementation
,
strings
800
x48029
1360A
Minimal Square
greedy
,
math
800
x47866
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47717
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47472
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47401
1472B
Fair Division
dp
,
greedy
,
math
800
x47281
1722A
Spell Check
implementation
800
x46511
492A
Vanya and Cubes
implementation
800
x46495
1283A
Minutes Before the New Year
math
800
x46337
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46301
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46280
1475B
New Year's Number
brute force
,
dp
,
math
900
x46228
1343A
Candies
brute force
,
math
900
x46161
1535A
Fair Playoff
brute force
,
implementation
800
x46107
707A
Brain's Photos
implementation
800
x46019
1360B
Honest Coach
greedy
,
sortings
800
x45903
1374B
Multiply by 2, divide by 6
math
900
x45610
1829A
Love Story
implementation
,
strings
800
x45413
1426A
Floor Number
implementation
,
math
800
x45372
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45339
456A
Laptops
sortings
1100
x45187
1703B
ICPC Balloons
data structures
,
implementation
800
x45024
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44859
474B
Worms
binary search
,
implementation
1200
x44571
379A
New Year Candles
implementation
1000
x44344
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44288
1371A
Magical Sticks
math
800
x44165
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44164
1294A
Collecting Coins
math
800
x44125
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44062
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x43900
1873B
Good Kid
brute force
,
greedy
,
math
800
x43786
1772A
A+B?
implementation
800
x43698
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43309
1374C
Move Brackets
greedy
,
strings
1000
x43196
1857A
Array Coloring
greedy
,
math
800
x43081
1722B
Colourblindness
implementation
800
x42967
731A
Night at the Museum
implementation
,
strings
800
x42948
451B
Sort the Array
implementation
,
sortings
1300
x42880
584A
Olesya and Rodion
math
1000
x42681
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x42672
474A
Keyboard
implementation
900
x42522
1520D
Same Differences
data structures
,
hashing
,
math
1200
x42362
1399B
Gifts Fixing
greedy
800
x42287
1542A
Odd Set
math
800
x42086
1950A
Stair, Peak, or Neither?
implementation
800
x41612
1791B
Following Directions
geometry
,
implementation
800
x41580
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41443
935A
Fafa and his Company
brute force
,
implementation
800
x41418
313B
Ilya and Queries
dp
,
implementation
1100
x41404
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x41277
1926A
Vlad and the Best of Five
implementation
800
x41172
476A
Dreamoon and Stairs
implementation
,
math
1000
x40969
1472A
Cards for Friends
greedy
,
math
800
x40741
1850C
Word on the Paper
implementation
,
strings
800
x40669
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40596
1829B
Blank Space
implementation
800
x40370
233A
Perfect Permutation
implementation
,
math
800
x40283
1791C
Prepend and Append
implementation
,
two pointers
800
x40132
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40082
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x39858
1462A
Favorite Sequence
implementation
,
two pointers
800
x39790
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x39702
1921A
Square
greedy
,
math
800
x39611
580C
Kefa and Park
dfs and similar
,
graphs
,
trees
1500
x39590
1669B
Triple
implementation
,
sortings
800
x39583
1807B
Grab the Candies
greedy
800
x39525
368B
Sereja and Suffixes
data structures
,
dp
1100
x39378
1296A
Array with Odd Sum
math
800
x39332
1927A
Make it White
greedy
,
strings
800
x39317
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x38922
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x38883
1729A
Two Elevators
math
800
x38745
459B
Pashmak and Flowers
combinatorics
,
implementation
,
sortings
1300
x38350
1878A
How Much Does Daytona Cost?
greedy
800
x38331
1941A
Rudolf and the Ticket
brute force
,
math
800
x38326
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