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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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→ 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
x238084
158A
Next Round
*special problem
,
implementation
800
x233772
263A
Beautiful Matrix
implementation
800
x226243
112A
Petya and Strings
implementation
,
strings
800
x210404
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x199475
281A
Word Capitalization
implementation
,
strings
800
x197310
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194609
118A
String Task
implementation
,
strings
1000
x182116
791A
Bear and Big Brother
implementation
800
x180202
266A
Stones on the Table
implementation
800
x179049
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168819
59A
Word
implementation
,
strings
800
x163208
977A
Wrong Subtraction
implementation
800
x155938
69A
Young Physicist
implementation
,
math
1000
x155835
96A
Football
implementation
,
strings
900
x149862
110A
Nearly Lucky Number
implementation
800
x143452
734A
Anton and Danik
implementation
,
strings
800
x141147
41A
Translation
implementation
,
strings
800
x135807
116A
Tram
implementation
800
x132820
677A
Vanya and Fence
implementation
800
x131502
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127433
1030A
In Search of an Easy Problem
implementation
800
x120763
467A
George and Accommodation
implementation
800
x114431
344A
Magnets
implementation
800
x112465
486A
Calculating Function
implementation
,
math
800
x110019
136A
Presents
implementation
800
x109757
200B
Drinks
implementation
,
math
800
x108437
61A
Ultra-Fast Mathematician
implementation
800
x104174
228A
Is your horseshoe on the other hoof?
implementation
800
x102578
133A
HQ9+
implementation
900
x100429
705A
Hulk
implementation
800
x99922
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94934
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91834
520A
Pangram
implementation
,
strings
800
x90351
144A
Arrival of the General
implementation
800
x89480
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87536
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84382
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84310
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82732
785A
Anton and Polyhedrons
implementation
,
strings
800
x82723
131A
cAPS lOCK
implementation
,
strings
1000
x81558
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78253
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77575
510A
Fox And Snake
implementation
800
x77535
427A
Police Recruits
implementation
800
x72887
1352A
Sum of Round Numbers
implementation
,
math
800
x72560
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71494
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71289
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71288
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x70343
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67711
581A
Vasya the Hipster
implementation
,
math
800
x67439
339B
Xenia and Ringroad
implementation
1000
x66650
151A
Soft Drinking
implementation
,
math
800
x66283
1742A
Sum
implementation
800
x65273
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63333
451A
Game With Sticks
implementation
900
x62925
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60765
1692A
Marathon
implementation
800
x60369
1512A
Spy Detected!
brute force
,
implementation
800
x60237
466A
Cheap Travel
implementation
1200
x59849
32B
Borze
expression parsing
,
implementation
800
x59157
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58701
1676A
Lucky?
implementation
800
x58468
1669A
Division?
implementation
800
x57624
758A
Holiday Of Equality
implementation
,
math
800
x57600
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56869
1807A
Plus or Minus
implementation
800
x56314
1560A
Dislike of Threes
implementation
800
x56170
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55804
1791A
Codeforces Checking
implementation
,
strings
800
x55463
1367A
Short Substrings
implementation
,
strings
800
x55024
1760A
Medium Number
implementation
,
sortings
800
x54265
313A
Ilya and Bank Account
implementation
,
number theory
900
x53796
703A
Mishka and Game
implementation
800
x53790
431A
Black Square
implementation
800
x51759
1850A
To My Critics
implementation
,
sortings
800
x51566
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50438
1915A
Odd One Out
bitmasks
,
implementation
800
x50259
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49861
1433A
Boring Apartments
implementation
,
math
800
x49505
1873A
Short Sort
brute force
,
implementation
800
x49173
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x49087
1619A
Square String?
implementation
,
strings
800
x48711
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x48157
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x48149
1722A
Spell Check
implementation
800
x47241
492A
Vanya and Cubes
implementation
800
x46991
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46766
1535A
Fair Playoff
brute force
,
implementation
800
x46619
707A
Brain's Photos
implementation
800
x46533
1829A
Love Story
implementation
,
strings
800
x46239
514A
Chewbaсca and Number
greedy
,
implementation
1200
x46161
1426A
Floor Number
implementation
,
math
800
x45729
1703B
ICPC Balloons
data structures
,
implementation
800
x45701
474B
Worms
binary search
,
implementation
1200
x45046
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44771
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44654
379A
New Year Candles
implementation
1000
x44613
1950A
Stair, Peak, or Neither?
implementation
800
x44600
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