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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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→ Filter Problems
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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
Standings
Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x484539
71A
Way Too Long Words
strings
800
x355910
231A
Team
brute force
,
greedy
800
x301213
1A
Theatre Square
math
1000
x246881
282A
Bit++
implementation
800
x238042
158A
Next Round
*special problem
,
implementation
800
x233731
50A
Domino piling
greedy
,
math
800
x229998
263A
Beautiful Matrix
implementation
800
x226197
112A
Petya and Strings
implementation
,
strings
800
x210371
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x199451
281A
Word Capitalization
implementation
,
strings
800
x197292
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194587
118A
String Task
implementation
,
strings
1000
x182099
791A
Bear and Big Brother
implementation
800
x180173
266A
Stones on the Table
implementation
800
x179026
617A
Elephant
math
800
x171253
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168802
59A
Word
implementation
,
strings
800
x163190
977A
Wrong Subtraction
implementation
800
x155927
69A
Young Physicist
implementation
,
math
1000
x155816
96A
Football
implementation
,
strings
900
x149850
110A
Nearly Lucky Number
implementation
800
x143429
734A
Anton and Danik
implementation
,
strings
800
x141128
41A
Translation
implementation
,
strings
800
x135787
116A
Tram
implementation
800
x132811
677A
Vanya and Fence
implementation
800
x131486
271A
Beautiful Year
brute force
800
x128416
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127424
58A
Chat room
greedy
,
strings
1000
x122779
1030A
In Search of an Easy Problem
implementation
800
x120752
122A
Lucky Division
brute force
,
number theory
1000
x116686
467A
George and Accommodation
implementation
800
x114425
344A
Magnets
implementation
800
x112457
160A
Twins
greedy
,
sortings
900
x111366
486A
Calculating Function
implementation
,
math
800
x110010
136A
Presents
implementation
800
x109745
200B
Drinks
implementation
,
math
800
x108421
318A
Even Odds
math
900
x106787
61A
Ultra-Fast Mathematician
implementation
800
x104164
228A
Is your horseshoe on the other hoof?
implementation
800
x102567
133A
HQ9+
implementation
900
x100421
705A
Hulk
implementation
800
x99914
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94919
1328A
Divisibility Problem
math
800
x93973
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91828
520A
Pangram
implementation
,
strings
800
x90345
144A
Arrival of the General
implementation
800
x89471
479A
Expression
brute force
,
math
1000
x89202
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87531
996A
Hit the Lottery
dp
,
greedy
800
x84766
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84372
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84304
208A
Dubstep
strings
900
x83978
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82726
785A
Anton and Polyhedrons
implementation
,
strings
800
x82716
25A
IQ test
brute force
1300
x81561
131A
cAPS lOCK
implementation
,
strings
1000
x81554
268A
Games
brute force
800
x81347
1335A
Candies and Two Sisters
math
800
x79084
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78243
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77570
510A
Fox And Snake
implementation
800
x77528
337A
Puzzles
greedy
900
x75849
230A
Dragons
greedy
,
sortings
1000
x74682
427A
Police Recruits
implementation
800
x72877
1352A
Sum of Round Numbers
implementation
,
math
800
x72553
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71488
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71275
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71274
155A
I_love_\%username\%
brute force
800
x70919
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x70331
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67705
581A
Vasya the Hipster
implementation
,
math
800
x67430
1154A
Restoring Three Numbers
math
800
x66693
339B
Xenia and Ringroad
implementation
1000
x66646
151A
Soft Drinking
implementation
,
math
800
x66275
1742A
Sum
implementation
800
x65262
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63320
1399A
Remove Smallest
greedy
,
sortings
800
x63027
189A
Cut Ribbon
brute force
,
dp
1300
x62992
451A
Game With Sticks
implementation
900
x62920
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62766
630A
Again Twenty Five!
number theory
800
x62395
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60757
1692A
Marathon
implementation
800
x60356
1512A
Spy Detected!
brute force
,
implementation
800
x60230
466A
Cheap Travel
implementation
1200
x59843
32B
Borze
expression parsing
,
implementation
800
x59148
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58695
1676A
Lucky?
implementation
800
x58458
1669A
Division?
implementation
800
x57613
758A
Holiday Of Equality
implementation
,
math
800
x57593
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x57207
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56865
579A
Raising Bacteria
bitmasks
1000
x56638
1807A
Plus or Minus
implementation
800
x56310
1560A
Dislike of Threes
implementation
800
x56162
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55793
1475A
Odd Divisor
math
,
number theory
900
x55657
1791A
Codeforces Checking
implementation
,
strings
800
x55452
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