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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
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
Standings
Custom test
Problems
#
Name
282A
Bit++
implementation
800
x234796
158A
Next Round
*special problem
,
implementation
800
x231516
263A
Beautiful Matrix
implementation
800
x223560
112A
Petya and Strings
implementation
,
strings
800
x208205
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197293
281A
Word Capitalization
implementation
,
strings
800
x195186
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192215
118A
String Task
implementation
,
strings
1000
x180586
791A
Bear and Big Brother
implementation
800
x177833
266A
Stones on the Table
implementation
800
x177133
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166670
59A
Word
implementation
,
strings
800
x161150
69A
Young Physicist
implementation
,
math
1000
x154431
977A
Wrong Subtraction
implementation
800
x154107
96A
Football
implementation
,
strings
900
x148445
110A
Nearly Lucky Number
implementation
800
x141825
734A
Anton and Danik
implementation
,
strings
800
x139282
41A
Translation
implementation
,
strings
800
x134182
116A
Tram
implementation
800
x131502
677A
Vanya and Fence
implementation
800
x129894
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126245
1030A
In Search of an Easy Problem
implementation
800
x119242
467A
George and Accommodation
implementation
800
x113243
344A
Magnets
implementation
800
x111168
486A
Calculating Function
implementation
,
math
800
x108850
136A
Presents
implementation
800
x108622
200B
Drinks
implementation
,
math
800
x107258
61A
Ultra-Fast Mathematician
implementation
800
x103185
228A
Is your horseshoe on the other hoof?
implementation
800
x101458
133A
HQ9+
implementation
900
x99616
705A
Hulk
implementation
800
x98989
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x93964
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90941
520A
Pangram
implementation
,
strings
800
x89318
144A
Arrival of the General
implementation
800
x88615
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86793
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83645
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83525
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82184
785A
Anton and Polyhedrons
implementation
,
strings
800
x81774
131A
cAPS lOCK
implementation
,
strings
1000
x80934
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77586
4C
Registration System
data structures
,
hashing
,
implementation
1300
x76699
510A
Fox And Snake
implementation
800
x76505
427A
Police Recruits
implementation
800
x72117
1352A
Sum of Round Numbers
implementation
,
math
800
x71438
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70869
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70504
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70345
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69575
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66927
581A
Vasya the Hipster
implementation
,
math
800
x66859
339B
Xenia and Ringroad
implementation
1000
x66200
151A
Soft Drinking
implementation
,
math
800
x65403
1742A
Sum
implementation
800
x64061
451A
Game With Sticks
implementation
900
x62414
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62064
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59902
1512A
Spy Detected!
brute force
,
implementation
800
x59607
466A
Cheap Travel
implementation
1200
x59285
1692A
Marathon
implementation
800
x59282
32B
Borze
expression parsing
,
implementation
800
x58381
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58018
1676A
Lucky?
implementation
800
x57593
758A
Holiday Of Equality
implementation
,
math
800
x56996
1669A
Division?
implementation
800
x56618
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56451
1560A
Dislike of Threes
implementation
800
x55617
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55238
1807A
Plus or Minus
implementation
800
x55224
1367A
Short Substrings
implementation
,
strings
800
x54647
1791A
Codeforces Checking
implementation
,
strings
800
x54472
313A
Ilya and Bank Account
implementation
,
number theory
900
x53389
703A
Mishka and Game
implementation
800
x53360
1760A
Medium Number
implementation
,
sortings
800
x53165
431A
Black Square
implementation
800
x51184
1850A
To My Critics
implementation
,
sortings
800
x50589
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50059
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49443
1433A
Boring Apartments
implementation
,
math
800
x49105
1915A
Odd One Out
bitmasks
,
implementation
800
x48993
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48544
1873A
Short Sort
brute force
,
implementation
800
x48229
1619A
Square String?
implementation
,
strings
800
x48030
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47718
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47475
1722A
Spell Check
implementation
800
x46513
492A
Vanya and Cubes
implementation
800
x46497
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46282
1535A
Fair Playoff
brute force
,
implementation
800
x46107
707A
Brain's Photos
implementation
800
x46019
1829A
Love Story
implementation
,
strings
800
x45416
1426A
Floor Number
implementation
,
math
800
x45372
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45340
1703B
ICPC Balloons
data structures
,
implementation
800
x45028
474B
Worms
binary search
,
implementation
1200
x44572
379A
New Year Candles
implementation
1000
x44344
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44289
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44164
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44065
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