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Before contest
Codeforces Round 941 (Div. 1)
46:33:51
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Before contest
Codeforces Round 941 (Div. 2)
46:33:51
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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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Status
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Custom test
Problems
#
Name
282A
Bit++
implementation
800
x234815
158A
Next Round
*special problem
,
implementation
800
x231525
263A
Beautiful Matrix
implementation
800
x223582
112A
Petya and Strings
implementation
,
strings
800
x208221
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197311
281A
Word Capitalization
implementation
,
strings
800
x195200
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192238
118A
String Task
implementation
,
strings
1000
x180590
791A
Bear and Big Brother
implementation
800
x177847
266A
Stones on the Table
implementation
800
x177148
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166685
59A
Word
implementation
,
strings
800
x161163
69A
Young Physicist
implementation
,
math
1000
x154436
977A
Wrong Subtraction
implementation
800
x154118
96A
Football
implementation
,
strings
900
x148457
110A
Nearly Lucky Number
implementation
800
x141835
734A
Anton and Danik
implementation
,
strings
800
x139313
41A
Translation
implementation
,
strings
800
x134193
116A
Tram
implementation
800
x131507
677A
Vanya and Fence
implementation
800
x129906
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126253
1030A
In Search of an Easy Problem
implementation
800
x119268
467A
George and Accommodation
implementation
800
x113246
344A
Magnets
implementation
800
x111174
486A
Calculating Function
implementation
,
math
800
x108857
136A
Presents
implementation
800
x108626
200B
Drinks
implementation
,
math
800
x107262
61A
Ultra-Fast Mathematician
implementation
800
x103193
228A
Is your horseshoe on the other hoof?
implementation
800
x101464
133A
HQ9+
implementation
900
x99619
705A
Hulk
implementation
800
x98997
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x93968
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90942
520A
Pangram
implementation
,
strings
800
x89326
144A
Arrival of the General
implementation
800
x88621
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86795
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83652
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83528
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82191
785A
Anton and Polyhedrons
implementation
,
strings
800
x81781
131A
cAPS lOCK
implementation
,
strings
1000
x80942
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77591
4C
Registration System
data structures
,
hashing
,
implementation
1300
x76706
510A
Fox And Snake
implementation
800
x76511
427A
Police Recruits
implementation
800
x72124
1352A
Sum of Round Numbers
implementation
,
math
800
x71443
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70872
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70508
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70350
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69579
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66936
581A
Vasya the Hipster
implementation
,
math
800
x66864
339B
Xenia and Ringroad
implementation
1000
x66202
151A
Soft Drinking
implementation
,
math
800
x65411
1742A
Sum
implementation
800
x64065
451A
Game With Sticks
implementation
900
x62420
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62078
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59908
1512A
Spy Detected!
brute force
,
implementation
800
x59613
466A
Cheap Travel
implementation
1200
x59287
1692A
Marathon
implementation
800
x59286
32B
Borze
expression parsing
,
implementation
800
x58385
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58025
1676A
Lucky?
implementation
800
x57595
758A
Holiday Of Equality
implementation
,
math
800
x57010
1669A
Division?
implementation
800
x56625
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56451
1560A
Dislike of Threes
implementation
800
x55620
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55239
1807A
Plus or Minus
implementation
800
x55230
1367A
Short Substrings
implementation
,
strings
800
x54650
1791A
Codeforces Checking
implementation
,
strings
800
x54479
313A
Ilya and Bank Account
implementation
,
number theory
900
x53392
703A
Mishka and Game
implementation
800
x53363
1760A
Medium Number
implementation
,
sortings
800
x53175
431A
Black Square
implementation
800
x51188
1850A
To My Critics
implementation
,
sortings
800
x50598
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50061
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49445
1433A
Boring Apartments
implementation
,
math
800
x49106
1915A
Odd One Out
bitmasks
,
implementation
800
x49006
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48544
1873A
Short Sort
brute force
,
implementation
800
x48235
1619A
Square String?
implementation
,
strings
800
x48035
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47724
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47478
1722A
Spell Check
implementation
800
x46523
492A
Vanya and Cubes
implementation
800
x46503
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46285
1535A
Fair Playoff
brute force
,
implementation
800
x46112
707A
Brain's Photos
implementation
800
x46022
1829A
Love Story
implementation
,
strings
800
x45421
1426A
Floor Number
implementation
,
math
800
x45374
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45346
1703B
ICPC Balloons
data structures
,
implementation
800
x45037
474B
Worms
binary search
,
implementation
1200
x44579
379A
New Year Candles
implementation
1000
x44344
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44290
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44165
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44070
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