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Codeforces Round 940 (Div. 2) and CodeCraft-23
3 days
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
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
x233976
158A
Next Round
*special problem
,
implementation
800
x230900
263A
Beautiful Matrix
implementation
800
x222847
112A
Petya and Strings
implementation
,
strings
800
x207536
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x196662
281A
Word Capitalization
implementation
,
strings
800
x194587
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x191563
118A
String Task
implementation
,
strings
1000
x180190
791A
Bear and Big Brother
implementation
800
x177197
266A
Stones on the Table
implementation
800
x176641
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166205
59A
Word
implementation
,
strings
800
x160635
69A
Young Physicist
implementation
,
math
1000
x154097
977A
Wrong Subtraction
implementation
800
x153696
96A
Football
implementation
,
strings
900
x148112
110A
Nearly Lucky Number
implementation
800
x141443
734A
Anton and Danik
implementation
,
strings
800
x138794
41A
Translation
implementation
,
strings
800
x133785
116A
Tram
implementation
800
x131186
677A
Vanya and Fence
implementation
800
x129452
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x125990
1030A
In Search of an Easy Problem
implementation
800
x118825
467A
George and Accommodation
implementation
800
x112965
344A
Magnets
implementation
800
x110835
486A
Calculating Function
implementation
,
math
800
x108541
136A
Presents
implementation
800
x108340
200B
Drinks
implementation
,
math
800
x106970
61A
Ultra-Fast Mathematician
implementation
800
x102915
228A
Is your horseshoe on the other hoof?
implementation
800
x101176
133A
HQ9+
implementation
900
x99411
705A
Hulk
implementation
800
x98721
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x93686
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90674
520A
Pangram
implementation
,
strings
800
x88959
144A
Arrival of the General
implementation
800
x88376
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86611
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83467
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83318
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82011
785A
Anton and Polyhedrons
implementation
,
strings
800
x81548
131A
cAPS lOCK
implementation
,
strings
1000
x80783
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77413
4C
Registration System
data structures
,
hashing
,
implementation
1300
x76447
510A
Fox And Snake
implementation
800
x76027
427A
Police Recruits
implementation
800
x71852
1352A
Sum of Round Numbers
implementation
,
math
800
x71188
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70715
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70327
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70091
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69377
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66689
581A
Vasya the Hipster
implementation
,
math
800
x66685
339B
Xenia and Ringroad
implementation
1000
x66078
151A
Soft Drinking
implementation
,
math
800
x65158
1742A
Sum
implementation
800
x63753
451A
Game With Sticks
implementation
900
x62310
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x61735
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59641
1512A
Spy Detected!
brute force
,
implementation
800
x59414
466A
Cheap Travel
implementation
1200
x59142
1692A
Marathon
implementation
800
x59046
32B
Borze
expression parsing
,
implementation
800
x58223
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x57791
1676A
Lucky?
implementation
800
x57358
758A
Holiday Of Equality
implementation
,
math
800
x56858
1669A
Division?
implementation
800
x56373
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56316
1560A
Dislike of Threes
implementation
800
x55477
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55066
1807A
Plus or Minus
implementation
800
x54957
1367A
Short Substrings
implementation
,
strings
800
x54532
1791A
Codeforces Checking
implementation
,
strings
800
x54212
703A
Mishka and Game
implementation
800
x53256
313A
Ilya and Bank Account
implementation
,
number theory
900
x53253
1760A
Medium Number
implementation
,
sortings
800
x52952
431A
Black Square
implementation
800
x51012
1850A
To My Critics
implementation
,
sortings
800
x50282
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x49951
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49352
1433A
Boring Apartments
implementation
,
math
800
x48998
1915A
Odd One Out
bitmasks
,
implementation
800
x48701
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48446
1873A
Short Sort
brute force
,
implementation
800
x47990
1619A
Square String?
implementation
,
strings
800
x47900
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47624
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47333
1722A
Spell Check
implementation
800
x46378
492A
Vanya and Cubes
implementation
800
x46370
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46210
1535A
Fair Playoff
brute force
,
implementation
800
x46006
707A
Brain's Photos
implementation
800
x45881
1426A
Floor Number
implementation
,
math
800
x45261
1829A
Love Story
implementation
,
strings
800
x45202
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45126
1703B
ICPC Balloons
data structures
,
implementation
800
x44829
474B
Worms
binary search
,
implementation
1200
x44393
379A
New Year Candles
implementation
1000
x44269
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44233
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44097
1742B
Increasing
greedy
,
implementation
,
sortings
800
x43839
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