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Before contest
Codeforces Round 941 (Div. 1)
23:56:23
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Before contest
Codeforces Round 941 (Div. 2)
23:56:23
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→ 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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Custom test
Problems
#
Name
282A
Bit++
implementation
800
x234908
158A
Next Round
*special problem
,
implementation
800
x231606
263A
Beautiful Matrix
implementation
800
x223654
112A
Petya and Strings
implementation
,
strings
800
x208286
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197373
281A
Word Capitalization
implementation
,
strings
800
x195256
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192312
791A
Bear and Big Brother
implementation
800
x177943
266A
Stones on the Table
implementation
800
x177219
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166755
59A
Word
implementation
,
strings
800
x161220
977A
Wrong Subtraction
implementation
800
x154168
110A
Nearly Lucky Number
implementation
800
x141884
734A
Anton and Danik
implementation
,
strings
800
x139390
41A
Translation
implementation
,
strings
800
x134293
116A
Tram
implementation
800
x131544
677A
Vanya and Fence
implementation
800
x129959
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126282
1030A
In Search of an Easy Problem
implementation
800
x119318
467A
George and Accommodation
implementation
800
x113272
344A
Magnets
implementation
800
x111222
486A
Calculating Function
implementation
,
math
800
x108889
136A
Presents
implementation
800
x108676
200B
Drinks
implementation
,
math
800
x107294
61A
Ultra-Fast Mathematician
implementation
800
x103222
228A
Is your horseshoe on the other hoof?
implementation
800
x101498
705A
Hulk
implementation
800
x99044
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90970
520A
Pangram
implementation
,
strings
800
x89360
144A
Arrival of the General
implementation
800
x88646
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86811
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83560
785A
Anton and Polyhedrons
implementation
,
strings
800
x81822
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77612
510A
Fox And Snake
implementation
800
x76589
427A
Police Recruits
implementation
800
x72154
1352A
Sum of Round Numbers
implementation
,
math
800
x71489
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70535
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70378
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66973
581A
Vasya the Hipster
implementation
,
math
800
x66885
151A
Soft Drinking
implementation
,
math
800
x65438
1742A
Sum
implementation
800
x64127
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62142
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59944
1512A
Spy Detected!
brute force
,
implementation
800
x59643
1692A
Marathon
implementation
800
x59320
32B
Borze
expression parsing
,
implementation
800
x58420
1676A
Lucky?
implementation
800
x57622
758A
Holiday Of Equality
implementation
,
math
800
x57029
1669A
Division?
implementation
800
x56679
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56477
1560A
Dislike of Threes
implementation
800
x55639
1807A
Plus or Minus
implementation
800
x55274
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55267
1367A
Short Substrings
implementation
,
strings
800
x54662
1791A
Codeforces Checking
implementation
,
strings
800
x54534
703A
Mishka and Game
implementation
800
x53379
1760A
Medium Number
implementation
,
sortings
800
x53203
431A
Black Square
implementation
800
x51204
1850A
To My Critics
implementation
,
sortings
800
x50626
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49459
1433A
Boring Apartments
implementation
,
math
800
x49121
1915A
Odd One Out
bitmasks
,
implementation
800
x49044
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48561
1873A
Short Sort
brute force
,
implementation
800
x48283
1619A
Square String?
implementation
,
strings
800
x48064
1722A
Spell Check
implementation
800
x46554
492A
Vanya and Cubes
implementation
800
x46522
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46298
1535A
Fair Playoff
brute force
,
implementation
800
x46130
707A
Brain's Photos
implementation
800
x46038
1829A
Love Story
implementation
,
strings
800
x45467
1426A
Floor Number
implementation
,
math
800
x45389
1703B
ICPC Balloons
data structures
,
implementation
800
x45054
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44096
1772A
A+B?
implementation
800
x43723
1722B
Colourblindness
implementation
800
x42989
731A
Night at the Museum
implementation
,
strings
800
x42964
1950A
Stair, Peak, or Neither?
implementation
800
x41793
1791B
Following Directions
geometry
,
implementation
800
x41612
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41458
935A
Fafa and his Company
brute force
,
implementation
800
x41428
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x41292
1926A
Vlad and the Best of Five
implementation
800
x41254
1850C
Word on the Paper
implementation
,
strings
800
x40687
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40604
1829B
Blank Space
implementation
800
x40407
233A
Perfect Permutation
implementation
,
math
800
x40297
1791C
Prepend and Append
implementation
,
two pointers
800
x40186
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40101
1462A
Favorite Sequence
implementation
,
two pointers
800
x39806
1669B
Triple
implementation
,
sortings
800
x39637
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x38128
509A
Maximum in Table
brute force
,
implementation
800
x37184
1915C
Can I Square?
binary search
,
implementation
800
x37092
1097A
Gennady and a Card Game
brute force
,
implementation
800
x36924
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36669
1186A
Vus the Cossack and a Contest
implementation
800
x36064
1607A
Linear Keyboard
implementation
,
strings
800
x35941
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