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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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implementation
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
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Custom test
Problems
#
Name
282A
Bit++
implementation
800
x234790
158A
Next Round
*special problem
,
implementation
800
x231506
263A
Beautiful Matrix
implementation
800
x223548
112A
Petya and Strings
implementation
,
strings
800
x208191
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197290
281A
Word Capitalization
implementation
,
strings
800
x195179
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192201
791A
Bear and Big Brother
implementation
800
x177817
266A
Stones on the Table
implementation
800
x177118
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166662
59A
Word
implementation
,
strings
800
x161140
977A
Wrong Subtraction
implementation
800
x154103
110A
Nearly Lucky Number
implementation
800
x141820
734A
Anton and Danik
implementation
,
strings
800
x139270
41A
Translation
implementation
,
strings
800
x134176
116A
Tram
implementation
800
x131496
677A
Vanya and Fence
implementation
800
x129890
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126242
1030A
In Search of an Easy Problem
implementation
800
x119232
467A
George and Accommodation
implementation
800
x113239
344A
Magnets
implementation
800
x111161
486A
Calculating Function
implementation
,
math
800
x108848
136A
Presents
implementation
800
x108617
200B
Drinks
implementation
,
math
800
x107253
61A
Ultra-Fast Mathematician
implementation
800
x103178
228A
Is your horseshoe on the other hoof?
implementation
800
x101454
705A
Hulk
implementation
800
x98988
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90931
520A
Pangram
implementation
,
strings
800
x89316
144A
Arrival of the General
implementation
800
x88607
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86790
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83521
785A
Anton and Polyhedrons
implementation
,
strings
800
x81765
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77581
510A
Fox And Snake
implementation
800
x76495
427A
Police Recruits
implementation
800
x72109
1352A
Sum of Round Numbers
implementation
,
math
800
x71432
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70501
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70342
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66924
581A
Vasya the Hipster
implementation
,
math
800
x66858
151A
Soft Drinking
implementation
,
math
800
x65402
1742A
Sum
implementation
800
x64058
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62058
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59898
1512A
Spy Detected!
brute force
,
implementation
800
x59602
1692A
Marathon
implementation
800
x59278
32B
Borze
expression parsing
,
implementation
800
x58374
1676A
Lucky?
implementation
800
x57589
758A
Holiday Of Equality
implementation
,
math
800
x56993
1669A
Division?
implementation
800
x56615
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56449
1560A
Dislike of Threes
implementation
800
x55613
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55234
1807A
Plus or Minus
implementation
800
x55221
1367A
Short Substrings
implementation
,
strings
800
x54645
1791A
Codeforces Checking
implementation
,
strings
800
x54469
703A
Mishka and Game
implementation
800
x53359
1760A
Medium Number
implementation
,
sortings
800
x53163
431A
Black Square
implementation
800
x51178
1850A
To My Critics
implementation
,
sortings
800
x50585
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49443
1433A
Boring Apartments
implementation
,
math
800
x49103
1915A
Odd One Out
bitmasks
,
implementation
800
x48992
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48543
1873A
Short Sort
brute force
,
implementation
800
x48226
1619A
Square String?
implementation
,
strings
800
x48029
1722A
Spell Check
implementation
800
x46510
492A
Vanya and Cubes
implementation
800
x46494
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46279
1535A
Fair Playoff
brute force
,
implementation
800
x46106
707A
Brain's Photos
implementation
800
x46019
1829A
Love Story
implementation
,
strings
800
x45413
1426A
Floor Number
implementation
,
math
800
x45370
1703B
ICPC Balloons
data structures
,
implementation
800
x45024
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44060
1772A
A+B?
implementation
800
x43698
1722B
Colourblindness
implementation
800
x42967
731A
Night at the Museum
implementation
,
strings
800
x42947
1950A
Stair, Peak, or Neither?
implementation
800
x41604
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
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x41274
1926A
Vlad and the Best of Five
implementation
800
x41168
1850C
Word on the Paper
implementation
,
strings
800
x40669
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40595
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
1462A
Favorite Sequence
implementation
,
two pointers
800
x39789
1669B
Triple
implementation
,
sortings
800
x39580
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x38096
509A
Maximum in Table
brute force
,
implementation
800
x37179
1915C
Can I Square?
binary search
,
implementation
800
x37054
1097A
Gennady and a Card Game
brute force
,
implementation
800
x36916
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36638
1186A
Vus the Cossack and a Contest
implementation
800
x36051
1607A
Linear Keyboard
implementation
,
strings
800
x35921
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