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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
09:35:54
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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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Status
Standings
Custom test
Problems
#
Name
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24933
1822A
TubeTube Feed
brute force
,
implementation
800
x24433
1821A
Matching
combinatorics
,
math
800
x19972
1820A
Yura's New Name
implementation
,
strings
800
x16792
1818A
Politics
greedy
,
implementation
800
x13031
1816A
Ian Visits Mary
constructive algorithms
,
geometry
,
number theory
800
x17679
1814A
Coins
implementation
,
math
800
x29871
1811A
Insert Digit
greedy
,
math
,
strings
800
x31325
1810B
Candies
constructive algorithms
,
math
,
number theory
800
x17638
1810A
Beautiful Sequence
brute force
,
greedy
800
x20822
1809A
Garland
implementation
800
x24050
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x30764
1807B
Grab the Candies
greedy
800
x42640
1807A
Plus or Minus
implementation
800
x63794
1806A
Walking Master
geometry
,
greedy
,
math
800
x25628
1805B
The String Has a Target
greedy
,
strings
800
x18721
1805A
We Need the Zero
bitmasks
,
brute force
800
x24280
1804A
Lame King
greedy
,
math
800
x18014
1802A
Likes
greedy
,
implementation
800
x15937
1800A
Is It a Cat?
implementation
,
strings
800
x31833
1799A
Recent Actions
data structures
,
greedy
,
implementation
,
math
800
x11641
1798A
Showstopper
greedy
,
implementation
,
sortings
800
x19952
1797A
Li Hua and Maze
constructive algorithms
,
flows
,
graphs
,
greedy
,
implementation
800
x17594
1796A
Typical Interview Problem
brute force
,
implementation
,
strings
800
x18903
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23704
1794A
Prefix and Suffix Array
strings
800
x17248
1793A
Yet Another Promotion
greedy
,
math
800
x18124
1792A
GamingForces
greedy
,
sortings
800
x28352
1791C
Prepend and Append
implementation
,
two pointers
800
x46915
1791B
Following Directions
geometry
,
implementation
800
x45065
1791A
Codeforces Checking
implementation
,
strings
800
x62209
1790B
Taisia and Dice
greedy
,
greedy
,
math
800
x27580
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x37392
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x16287
1789A
Serval and Mocha's Array
brute force
,
math
,
number theory
800
x19603
1788A
One and Two
brute force
,
implementation
,
math
800
x31776
1787A
Exponential Equation
constructive algorithms
,
math
800
x19285
1786A2
Alternating Deck (hard version)
implementation
800
x11466
1786A1
Non-alternating Deck (easy version)
implementation
800
x14097
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x30960
1781A
Parallel Projection
geometry
,
math
800
x15143
1780A
Hayato and School
constructive algorithms
,
greedy
800
x21785
1779A
Hall of Fame
constructive algorithms
,
greedy
,
strings
800
x23218
1778A
Flip Flop Sum
greedy
,
implementation
800
x24495
1777A
Everybody Likes Good Arrays!
greedy
,
math
800
x25161
1776A
Walking Boy
greedy
800
x7045
1775A1
Gardener and the Capybaras (easy version)
brute force
,
constructive algorithms
,
implementation
800
x19741
1774A
Add Plus Minus Sign
constructive algorithms
,
math
800
x22523
1773F
Football
constructive algorithms
800
x4191
1772B
Matrix Rotation
brute force
,
implementation
800
x29476
1772A
A+B?
implementation
800
x48940
1769A
Узкая дорога
*special problem
,
math
800
x1972
1768A
Greatest Convex
greedy
,
math
,
number theory
800
x29076
1767B
Block Towers
data structures
,
greedy
,
sortings
800
x20466
1767A
Cut the Triangle
implementation
800
x20649
1766A
Extremely Round
brute force
,
implementation
800
x27357
1765B
Broken Keyboard
greedy
800
x9103
1764A
Doremy's Paint
greedy
800
x16673
1763A
Absolute Maximization
bitmasks
,
constructive algorithms
,
greedy
,
math
800
x15768
1762A
Divide and Conquer
greedy
,
math
,
number theory
800
x19300
1761A
Two Permutations
brute force
,
constructive algorithms
800
x20285
1760C
Advantage
data structures
,
implementation
,
sortings
800
x37765
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x45239
1760A
Medium Number
implementation
,
sortings
800
x61165
1759B
Lost Permutation
math
800
x22345
1759A
Yes-Yes?
implementation
,
strings
800
x30272
1758A
SSeeeeiinngg DDoouubbllee
constructive algorithms
,
strings
800
x25333
1754B
Kevin and Permutation
constructive algorithms
,
greedy
,
math
800
x18981
1754A
Technical Support
greedy
800
x23357
1750B
Maximum Substring
brute force
,
greedy
,
implementation
800
x16275
1750A
Indirect Sort
constructive algorithms
,
implementation
,
math
800
x17110
1749A
Cowardly Rooks
greedy
,
implementation
800
x22399
1748A
The Ultimate Square
math
800
x24173
1747A
Two Groups
constructive algorithms
,
greedy
800
x25046
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x17267
1746A
Maxmina
constructive algorithms
,
greedy
800
x19885
1744B
Even-Odd Increments
implementation
,
math
800
x23612
1744A
Number Replacement
greedy
,
implementation
800
x27271
1743B
Permutation Value
constructive algorithms
,
greedy
800
x22294
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x26913
1742B
Increasing
greedy
,
implementation
,
sortings
800
x48666
1742A
Sum
implementation
800
x75091
1741B
Funny Permutation
constructive algorithms
,
math
800
x25548
1741A
Compare T-Shirt Sizes
implementation
,
implementation
,
strings
800
x31105
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13786
1740A
Factorise N+M
constructive algorithms
,
number theory
800
x20415
1739A
Immobile Knight
implementation
800
x22862
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13560
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22919
1735A
Working Week
constructive algorithms
,
greedy
,
math
800
x20351
1734B
Bright, Nice, Brilliant
constructive algorithms
800
x15864
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x21286
1733A
Consecutive Sum
greedy
,
sortings
800
x21039
1731A
Joey Takes Money
greedy
,
math
800
x22694
1730A
Planets
data structures
,
greedy
,
sortings
800
x23176
1729B
Decode String
greedy
,
strings
800
x30451
1729A
Two Elevators
math
800
x40951
1728B
Best Permutation
constructive algorithms
,
greedy
800
x20188
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24725
1725A
Accumulation of Dominoes
math
800
x9312
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