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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
x484579
71A
Way Too Long Words
strings
800
x355949
231A
Team
brute force
,
greedy
800
x301250
1A
Theatre Square
math
1000
x246893
282A
Bit++
implementation
800
x238064
158A
Next Round
*special problem
,
implementation
800
x233760
50A
Domino piling
greedy
,
math
800
x230017
263A
Beautiful Matrix
implementation
800
x226231
112A
Petya and Strings
implementation
,
strings
800
x210391
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x199468
281A
Word Capitalization
implementation
,
strings
800
x197304
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194603
118A
String Task
implementation
,
strings
1000
x182109
791A
Bear and Big Brother
implementation
800
x180193
266A
Stones on the Table
implementation
800
x179046
617A
Elephant
math
800
x171261
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168812
59A
Word
implementation
,
strings
800
x163200
977A
Wrong Subtraction
implementation
800
x155935
69A
Young Physicist
implementation
,
math
1000
x155829
96A
Football
implementation
,
strings
900
x149858
110A
Nearly Lucky Number
implementation
800
x143441
734A
Anton and Danik
implementation
,
strings
800
x141138
41A
Translation
implementation
,
strings
800
x135796
116A
Tram
implementation
800
x132816
677A
Vanya and Fence
implementation
800
x131493
271A
Beautiful Year
brute force
800
x128428
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127428
58A
Chat room
greedy
,
strings
1000
x122783
1030A
In Search of an Easy Problem
implementation
800
x120757
122A
Lucky Division
brute force
,
number theory
1000
x116696
467A
George and Accommodation
implementation
800
x114431
344A
Magnets
implementation
800
x112462
160A
Twins
greedy
,
sortings
900
x111371
486A
Calculating Function
implementation
,
math
800
x110015
136A
Presents
implementation
800
x109750
200B
Drinks
implementation
,
math
800
x108431
318A
Even Odds
math
900
x106798
61A
Ultra-Fast Mathematician
implementation
800
x104170
228A
Is your horseshoe on the other hoof?
implementation
800
x102574
133A
HQ9+
implementation
900
x100426
705A
Hulk
implementation
800
x99921
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94930
1328A
Divisibility Problem
math
800
x93976
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91834
520A
Pangram
implementation
,
strings
800
x90349
144A
Arrival of the General
implementation
800
x89477
479A
Expression
brute force
,
math
1000
x89205
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87535
996A
Hit the Lottery
dp
,
greedy
800
x84774
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84379
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84307
208A
Dubstep
strings
900
x83984
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82729
785A
Anton and Polyhedrons
implementation
,
strings
800
x82721
25A
IQ test
brute force
1300
x81566
131A
cAPS lOCK
implementation
,
strings
1000
x81556
268A
Games
brute force
800
x81351
1335A
Candies and Two Sisters
math
800
x79086
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78246
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77572
510A
Fox And Snake
implementation
800
x77531
337A
Puzzles
greedy
900
x75852
230A
Dragons
greedy
,
sortings
1000
x74685
427A
Police Recruits
implementation
800
x72882
1352A
Sum of Round Numbers
implementation
,
math
800
x72559
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71492
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71283
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71283
155A
I_love_\%username\%
brute force
800
x70922
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x70339
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67709
581A
Vasya the Hipster
implementation
,
math
800
x67435
1154A
Restoring Three Numbers
math
800
x66698
339B
Xenia and Ringroad
implementation
1000
x66649
151A
Soft Drinking
implementation
,
math
800
x66278
1742A
Sum
implementation
800
x65265
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63331
1399A
Remove Smallest
greedy
,
sortings
800
x63032
189A
Cut Ribbon
brute force
,
dp
1300
x62996
451A
Game With Sticks
implementation
900
x62923
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62769
630A
Again Twenty Five!
number theory
800
x62401
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60762
1692A
Marathon
implementation
800
x60363
1512A
Spy Detected!
brute force
,
implementation
800
x60233
466A
Cheap Travel
implementation
1200
x59846
32B
Borze
expression parsing
,
implementation
800
x59153
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58697
1676A
Lucky?
implementation
800
x58464
1669A
Division?
implementation
800
x57620
758A
Holiday Of Equality
implementation
,
math
800
x57597
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x57211
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56868
579A
Raising Bacteria
bitmasks
1000
x56642
1807A
Plus or Minus
implementation
800
x56313
1560A
Dislike of Threes
implementation
800
x56164
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55797
1475A
Odd Divisor
math
,
number theory
900
x55662
1791A
Codeforces Checking
implementation
,
strings
800
x55460
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