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Codeforces Round 940 (Div. 2)
4 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
Submit
Status
Standings
Custom test
Problems
#
Name
282A
Bit++
implementation
800
x233703
158A
Next Round
*special problem
,
implementation
800
x230814
263A
Beautiful Matrix
implementation
800
x222708
112A
Petya and Strings
implementation
,
strings
800
x207374
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x196577
281A
Word Capitalization
implementation
,
strings
800
x194496
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x191463
118A
String Task
implementation
,
strings
1000
x180138
791A
Bear and Big Brother
implementation
800
x177103
266A
Stones on the Table
implementation
800
x176562
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166126
59A
Word
implementation
,
strings
800
x160514
69A
Young Physicist
implementation
,
math
1000
x154033
977A
Wrong Subtraction
implementation
800
x153609
96A
Football
implementation
,
strings
900
x148060
110A
Nearly Lucky Number
implementation
800
x141367
734A
Anton and Danik
implementation
,
strings
800
x138718
41A
Translation
implementation
,
strings
800
x133720
116A
Tram
implementation
800
x131154
677A
Vanya and Fence
implementation
800
x129384
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x125943
1030A
In Search of an Easy Problem
implementation
800
x118756
467A
George and Accommodation
implementation
800
x112926
344A
Magnets
implementation
800
x110787
486A
Calculating Function
implementation
,
math
800
x108497
136A
Presents
implementation
800
x108298
200B
Drinks
implementation
,
math
800
x106928
61A
Ultra-Fast Mathematician
implementation
800
x102878
228A
Is your horseshoe on the other hoof?
implementation
800
x101127
133A
HQ9+
implementation
900
x99376
705A
Hulk
implementation
800
x98650
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x93630
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90642
520A
Pangram
implementation
,
strings
800
x88920
144A
Arrival of the General
implementation
800
x88338
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86585
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83447
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83288
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x81990
785A
Anton and Polyhedrons
implementation
,
strings
800
x81522
131A
cAPS lOCK
implementation
,
strings
1000
x80757
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77391
4C
Registration System
data structures
,
hashing
,
implementation
1300
x76414
510A
Fox And Snake
implementation
800
x75991
427A
Police Recruits
implementation
800
x71816
1352A
Sum of Round Numbers
implementation
,
math
800
x71151
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70693
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70290
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70055
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69345
581A
Vasya the Hipster
implementation
,
math
800
x66665
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66659
339B
Xenia and Ringroad
implementation
1000
x66063
151A
Soft Drinking
implementation
,
math
800
x65130
1742A
Sum
implementation
800
x63718
451A
Game With Sticks
implementation
900
x62300
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x61647
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59591
1512A
Spy Detected!
brute force
,
implementation
800
x59382
466A
Cheap Travel
implementation
1200
x59118
1692A
Marathon
implementation
800
x59010
32B
Borze
expression parsing
,
implementation
800
x58201
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x57766
1676A
Lucky?
implementation
800
x57330
758A
Holiday Of Equality
implementation
,
math
800
x56843
1669A
Division?
implementation
800
x56316
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56297
1560A
Dislike of Threes
implementation
800
x55458
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55047
1807A
Plus or Minus
implementation
800
x54918
1367A
Short Substrings
implementation
,
strings
800
x54477
1791A
Codeforces Checking
implementation
,
strings
800
x54180
313A
Ilya and Bank Account
implementation
,
number theory
900
x53242
703A
Mishka and Game
implementation
800
x53241
1760A
Medium Number
implementation
,
sortings
800
x52921
431A
Black Square
implementation
800
x50988
1850A
To My Critics
implementation
,
sortings
800
x50237
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x49935
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49335
1433A
Boring Apartments
implementation
,
math
800
x48982
1915A
Odd One Out
bitmasks
,
implementation
800
x48654
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48437
1873A
Short Sort
brute force
,
implementation
800
x47950
1619A
Square String?
implementation
,
strings
800
x47881
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47605
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47287
1722A
Spell Check
implementation
800
x46360
492A
Vanya and Cubes
implementation
800
x46354
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46201
1535A
Fair Playoff
brute force
,
implementation
800
x46001
707A
Brain's Photos
implementation
800
x45868
1426A
Floor Number
implementation
,
math
800
x45252
1829A
Love Story
implementation
,
strings
800
x45175
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45094
1703B
ICPC Balloons
data structures
,
implementation
800
x44807
474B
Worms
binary search
,
implementation
1200
x44371
379A
New Year Candles
implementation
1000
x44253
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44225
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44089
1742B
Increasing
greedy
,
implementation
,
sortings
800
x43822
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