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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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→ Filter Problems
Difficulty:
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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
1535A
Fair Playoff
brute force
,
implementation
800
x46623
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46770
1283A
Minutes Before the New Year
math
800
x46824
492A
Vanya and Cubes
implementation
800
x46993
1722A
Spell Check
implementation
800
x47246
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47694
1472B
Fair Division
dp
,
greedy
,
math
800
x47722
1360A
Minimal Square
greedy
,
math
800
x48210
1551A
Polycarp and Coins
greedy
,
math
800
x48620
1619A
Square String?
implementation
,
strings
800
x48714
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x49090
1873A
Short Sort
brute force
,
implementation
800
x49179
1433A
Boring Apartments
implementation
,
math
800
x49508
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49862
80A
Panoramix's Prediction
brute force
800
x49878
1624A
Plus One on the Subset
math
800
x49941
1915A
Odd One Out
bitmasks
,
implementation
800
x50263
1367B
Even Array
greedy
,
math
800
x50547
1374A
Required Remainder
math
800
x50822
1850A
To My Critics
implementation
,
sortings
800
x51572
431A
Black Square
implementation
800
x51761
9A
Die Roll
math
,
probabilities
800
x52885
703A
Mishka and Game
implementation
800
x53794
1343B
Balanced Array
constructive algorithms
,
math
800
x53876
1760A
Medium Number
implementation
,
sortings
800
x54270
1367A
Short Substrings
implementation
,
strings
800
x55025
1791A
Codeforces Checking
implementation
,
strings
800
x55474
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55808
1560A
Dislike of Threes
implementation
800
x56176
1807A
Plus or Minus
implementation
800
x56327
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56872
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x57217
758A
Holiday Of Equality
implementation
,
math
800
x57604
1669A
Division?
implementation
800
x57628
1676A
Lucky?
implementation
800
x58475
32B
Borze
expression parsing
,
implementation
800
x59165
1512A
Spy Detected!
brute force
,
implementation
800
x60242
1692A
Marathon
implementation
800
x60380
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60769
630A
Again Twenty Five!
number theory
800
x62409
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62782
1399A
Remove Smallest
greedy
,
sortings
800
x63045
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63341
1742A
Sum
implementation
800
x65283
151A
Soft Drinking
implementation
,
math
800
x66289
1154A
Restoring Three Numbers
math
800
x66703
581A
Vasya the Hipster
implementation
,
math
800
x67442
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67720
155A
I_love_\%username\%
brute force
800
x70931
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71292
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71297
1352A
Sum of Round Numbers
implementation
,
math
800
x72567
427A
Police Recruits
implementation
800
x72891
510A
Fox And Snake
implementation
800
x77539
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78256
1335A
Candies and Two Sisters
math
800
x79097
268A
Games
brute force
800
x81358
785A
Anton and Polyhedrons
implementation
,
strings
800
x82728
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84385
996A
Hit the Lottery
dp
,
greedy
800
x84785
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87543
144A
Arrival of the General
implementation
800
x89489
520A
Pangram
implementation
,
strings
800
x90357
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91834
1328A
Divisibility Problem
math
800
x93990
705A
Hulk
implementation
800
x99926
228A
Is your horseshoe on the other hoof?
implementation
800
x102582
61A
Ultra-Fast Mathematician
implementation
800
x104180
200B
Drinks
implementation
,
math
800
x108443
136A
Presents
implementation
800
x109765
486A
Calculating Function
implementation
,
math
800
x110033
344A
Magnets
implementation
800
x112473
467A
George and Accommodation
implementation
800
x114439
1030A
In Search of an Easy Problem
implementation
800
x120775
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127446
271A
Beautiful Year
brute force
800
x128445
677A
Vanya and Fence
implementation
800
x131509
116A
Tram
implementation
800
x132826
41A
Translation
implementation
,
strings
800
x135819
734A
Anton and Danik
implementation
,
strings
800
x141154
110A
Nearly Lucky Number
implementation
800
x143460
977A
Wrong Subtraction
implementation
800
x155945
59A
Word
implementation
,
strings
800
x163225
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168838
617A
Elephant
math
800
x171288
266A
Stones on the Table
implementation
800
x179058
791A
Bear and Big Brother
implementation
800
x180217
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194618
281A
Word Capitalization
implementation
,
strings
800
x197326
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x199494
112A
Petya and Strings
implementation
,
strings
800
x210416
263A
Beautiful Matrix
implementation
800
x226259
50A
Domino piling
greedy
,
math
800
x230033
158A
Next Round
*special problem
,
implementation
800
x233785
282A
Bit++
implementation
800
x238102
231A
Team
brute force
,
greedy
800
x301290
71A
Way Too Long Words
strings
800
x356010
4A
Watermelon
brute force
,
math
800
x484630
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