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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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Custom test
Problems
#
Name
509A
Maximum in Table
brute force
,
implementation
800
x37329
1915C
Can I Square?
binary search
,
implementation
800
x37887
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x38815
1462A
Favorite Sequence
implementation
,
two pointers
800
x40113
1669B
Triple
implementation
,
sortings
800
x40165
233A
Perfect Permutation
implementation
,
math
800
x40592
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40599
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40760
1791C
Prepend and Append
implementation
,
two pointers
800
x40892
1829B
Blank Space
implementation
800
x41143
1850C
Word on the Paper
implementation
,
strings
800
x41377
935A
Fafa and his Company
brute force
,
implementation
800
x41640
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x41703
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41969
1791B
Following Directions
geometry
,
implementation
800
x42036
1926A
Vlad and the Best of Five
implementation
800
x42522
731A
Night at the Museum
implementation
,
strings
800
x43363
1722B
Colourblindness
implementation
800
x43445
1772A
A+B?
implementation
800
x44300
1950A
Stair, Peak, or Neither?
implementation
800
x44571
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44763
1703B
ICPC Balloons
data structures
,
implementation
800
x45690
1426A
Floor Number
implementation
,
math
800
x45723
1829A
Love Story
implementation
,
strings
800
x46230
707A
Brain's Photos
implementation
800
x46526
1535A
Fair Playoff
brute force
,
implementation
800
x46608
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46763
492A
Vanya and Cubes
implementation
800
x46983
1722A
Spell Check
implementation
800
x47229
1619A
Square String?
implementation
,
strings
800
x48707
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x49080
1873A
Short Sort
brute force
,
implementation
800
x49162
1433A
Boring Apartments
implementation
,
math
800
x49499
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49856
1915A
Odd One Out
bitmasks
,
implementation
800
x50250
1850A
To My Critics
implementation
,
sortings
800
x51561
431A
Black Square
implementation
800
x51747
703A
Mishka and Game
implementation
800
x53782
1760A
Medium Number
implementation
,
sortings
800
x54256
1367A
Short Substrings
implementation
,
strings
800
x55021
1791A
Codeforces Checking
implementation
,
strings
800
x55450
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55792
1560A
Dislike of Threes
implementation
800
x56159
1807A
Plus or Minus
implementation
800
x56307
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56862
758A
Holiday Of Equality
implementation
,
math
800
x57590
1669A
Division?
implementation
800
x57607
1676A
Lucky?
implementation
800
x58453
32B
Borze
expression parsing
,
implementation
800
x59146
1512A
Spy Detected!
brute force
,
implementation
800
x60224
1692A
Marathon
implementation
800
x60351
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60754
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63312
1742A
Sum
implementation
800
x65262
151A
Soft Drinking
implementation
,
math
800
x66271
581A
Vasya the Hipster
implementation
,
math
800
x67426
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67702
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71269
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71272
1352A
Sum of Round Numbers
implementation
,
math
800
x72550
427A
Police Recruits
implementation
800
x72874
510A
Fox And Snake
implementation
800
x77523
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78241
785A
Anton and Polyhedrons
implementation
,
strings
800
x82713
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84371
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87526
144A
Arrival of the General
implementation
800
x89471
520A
Pangram
implementation
,
strings
800
x90343
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91823
705A
Hulk
implementation
800
x99910
228A
Is your horseshoe on the other hoof?
implementation
800
x102563
61A
Ultra-Fast Mathematician
implementation
800
x104162
200B
Drinks
implementation
,
math
800
x108417
136A
Presents
implementation
800
x109741
486A
Calculating Function
implementation
,
math
800
x110006
344A
Magnets
implementation
800
x112454
467A
George and Accommodation
implementation
800
x114422
1030A
In Search of an Easy Problem
implementation
800
x120746
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127420
677A
Vanya and Fence
implementation
800
x131481
116A
Tram
implementation
800
x132805
41A
Translation
implementation
,
strings
800
x135783
734A
Anton and Danik
implementation
,
strings
800
x141125
110A
Nearly Lucky Number
implementation
800
x143424
977A
Wrong Subtraction
implementation
800
x155919
59A
Word
implementation
,
strings
800
x163180
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168792
266A
Stones on the Table
implementation
800
x179022
791A
Bear and Big Brother
implementation
800
x180167
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194580
281A
Word Capitalization
implementation
,
strings
800
x197288
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x199446
112A
Petya and Strings
implementation
,
strings
800
x210360
263A
Beautiful Matrix
implementation
800
x226187
158A
Next Round
*special problem
,
implementation
800
x233724
282A
Bit++
implementation
800
x238032
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