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Before contest
Codeforces Round 941 (Div. 1)
32:32:59
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*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
32:32:59
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→ Filter Problems
Difficulty:
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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
x234861
158A
Next Round
*special problem
,
implementation
800
x231571
263A
Beautiful Matrix
implementation
800
x223627
112A
Petya and Strings
implementation
,
strings
800
x208259
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197341
281A
Word Capitalization
implementation
,
strings
800
x195232
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192287
118A
String Task
implementation
,
strings
1000
x180610
791A
Bear and Big Brother
implementation
800
x177909
266A
Stones on the Table
implementation
800
x177194
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166733
59A
Word
implementation
,
strings
800
x161195
69A
Young Physicist
implementation
,
math
1000
x154460
977A
Wrong Subtraction
implementation
800
x154143
96A
Football
implementation
,
strings
900
x148481
110A
Nearly Lucky Number
implementation
800
x141859
734A
Anton and Danik
implementation
,
strings
800
x139349
41A
Translation
implementation
,
strings
800
x134277
116A
Tram
implementation
800
x131523
677A
Vanya and Fence
implementation
800
x129932
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126270
1030A
In Search of an Easy Problem
implementation
800
x119301
467A
George and Accommodation
implementation
800
x113266
344A
Magnets
implementation
800
x111208
486A
Calculating Function
implementation
,
math
800
x108879
136A
Presents
implementation
800
x108651
200B
Drinks
implementation
,
math
800
x107285
61A
Ultra-Fast Mathematician
implementation
800
x103216
228A
Is your horseshoe on the other hoof?
implementation
800
x101483
133A
HQ9+
implementation
900
x99637
705A
Hulk
implementation
800
x99026
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x93987
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90962
520A
Pangram
implementation
,
strings
800
x89347
144A
Arrival of the General
implementation
800
x88635
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86807
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83665
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83545
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82201
785A
Anton and Polyhedrons
implementation
,
strings
800
x81806
131A
cAPS lOCK
implementation
,
strings
1000
x80953
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77603
4C
Registration System
data structures
,
hashing
,
implementation
1300
x76724
510A
Fox And Snake
implementation
800
x76567
427A
Police Recruits
implementation
800
x72141
1352A
Sum of Round Numbers
implementation
,
math
800
x71472
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70881
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70525
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70369
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69587
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66952
581A
Vasya the Hipster
implementation
,
math
800
x66880
339B
Xenia and Ringroad
implementation
1000
x66209
151A
Soft Drinking
implementation
,
math
800
x65432
1742A
Sum
implementation
800
x64100
451A
Game With Sticks
implementation
900
x62434
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62109
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59930
1512A
Spy Detected!
brute force
,
implementation
800
x59627
466A
Cheap Travel
implementation
1200
x59317
1692A
Marathon
implementation
800
x59309
32B
Borze
expression parsing
,
implementation
800
x58404
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58063
1676A
Lucky?
implementation
800
x57613
758A
Holiday Of Equality
implementation
,
math
800
x57017
1669A
Division?
implementation
800
x56655
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56464
1560A
Dislike of Threes
implementation
800
x55629
1807A
Plus or Minus
implementation
800
x55261
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55252
1367A
Short Substrings
implementation
,
strings
800
x54656
1791A
Codeforces Checking
implementation
,
strings
800
x54524
313A
Ilya and Bank Account
implementation
,
number theory
900
x53398
703A
Mishka and Game
implementation
800
x53373
1760A
Medium Number
implementation
,
sortings
800
x53194
431A
Black Square
implementation
800
x51199
1850A
To My Critics
implementation
,
sortings
800
x50619
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50070
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49453
1433A
Boring Apartments
implementation
,
math
800
x49113
1915A
Odd One Out
bitmasks
,
implementation
800
x49029
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48553
1873A
Short Sort
brute force
,
implementation
800
x48265
1619A
Square String?
implementation
,
strings
800
x48057
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47728
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47491
1722A
Spell Check
implementation
800
x46543
492A
Vanya and Cubes
implementation
800
x46517
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46293
1535A
Fair Playoff
brute force
,
implementation
800
x46126
707A
Brain's Photos
implementation
800
x46029
1829A
Love Story
implementation
,
strings
800
x45450
1426A
Floor Number
implementation
,
math
800
x45382
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45370
1703B
ICPC Balloons
data structures
,
implementation
800
x45043
474B
Worms
binary search
,
implementation
1200
x44604
379A
New Year Candles
implementation
1000
x44347
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44294
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44167
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44082
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