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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
29:38:36
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constructive algorithms
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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Status
Standings
Custom test
Problems
#
Name
2037C
Superultra's Favorite Permutation
constructive algorithms
,
greedy
,
math
,
number theory
1000
x14309
2035B
Everyone Loves Tres
constructive algorithms
,
greedy
,
math
,
number theory
900
x14474
2033B
Sakurako and Water
brute force
,
constructive algorithms
,
greedy
900
x22787
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x32663
2032B
Medians
constructive algorithms
,
greedy
,
implementation
,
math
1100
x15362
2031A
Penchick and Modern Monument
constructive algorithms
,
dp
,
greedy
,
math
800
x14162
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x19946
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x23285
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x8078
2026A
Perpendicular Segments
constructive algorithms
,
geometry
,
greedy
,
math
900
x15781
2024B
Buying Lemonade
binary search
,
constructive algorithms
,
sortings
1100
x13037
2022A
Bus to Pénjamo
constructive algorithms
,
greedy
,
implementation
,
math
800
x13683
2013B
Battle for Survive
constructive algorithms
,
greedy
,
math
900
x22909
2013A
Zhan's Blender
constructive algorithms
,
math
800
x27063
2008A
Sakurako's Exam
brute force
,
constructive algorithms
,
greedy
,
math
800
x35140
2005A
Simple Palindrome
combinatorics
,
constructive algorithms
,
greedy
,
math
900
x21625
2002B
Removals Game
constructive algorithms
,
games
1000
x18825
2002A
Distanced Coloring
constructive algorithms
,
implementation
,
math
800
x19426
2001B
Generate Permutation
constructive algorithms
800
x24000
1999B
Card Game
brute force
,
constructive algorithms
,
implementation
1000
x32401
1998B
Minimize Equal Sum Subarrays
constructive algorithms
,
math
,
number theory
1000
x23795
1998A
Find K Distinct Points with Fixed Center
constructive algorithms
,
implementation
,
math
800
x23944
1997C
Even Positions
constructive algorithms
,
data structures
,
greedy
1100
x22022
1997B
Make Three Regions
constructive algorithms
,
two pointers
1100
x20637
1994B
Fun Game
bitmasks
,
constructive algorithms
,
greedy
,
math
1100
x16557
1994A
Diverse Game
constructive algorithms
,
greedy
,
implementation
800
x20239
1993B
Parity and Sum
constructive algorithms
,
greedy
1100
x22759
1992C
Gorilla and Permutation
constructive algorithms
,
math
900
x29141
1992A
Only Pluses
brute force
,
constructive algorithms
,
greedy
,
math
,
sortings
800
x41373
1991B
AND Reconstruction
bitmasks
,
constructive algorithms
,
greedy
1100
x16390
1984A
Strange Splitting
constructive algorithms
800
x21182
1983A
Array Divisibility
constructive algorithms
,
math
800
x25707
1978A
Alice and Books
constructive algorithms
,
greedy
,
sortings
800
x25774
1977B
Binary Colouring
bitmasks
,
constructive algorithms
,
greedy
,
math
1100
x17688
1969B
Shifts and Sorting
constructive algorithms
,
greedy
1000
x19172
1969A
Two Friends
constructive algorithms
,
implementation
,
math
800
x20005
1968C
Assembly via Remainders
constructive algorithms
,
number theory
1000
x25149
1966B
Rectangle Filling
constructive algorithms
,
implementation
1100
x15041
1966A
Card Exchange
constructive algorithms
,
games
,
greedy
800
x17929
1957B
A BIT of a Construction
bitmasks
,
constructive algorithms
,
greedy
,
implementation
1100
x18014
1957A
Stickogon
constructive algorithms
,
greedy
800
x23394
1955B
Progressive Square
constructive algorithms
,
data structures
,
implementation
,
sortings
1000
x28098
1954A
Painting the Ribbon
constructive algorithms
,
greedy
,
math
900
x24280
1951A
Dual Trigger
constructive algorithms
,
greedy
,
math
900
x19828
1948A
Special Characters
brute force
,
constructive algorithms
800
x28646
1944B
Equal XOR
bitmasks
,
constructive algorithms
1100
x16290
1942B
Bessie and MEX
constructive algorithms
,
math
1100
x14037
1942A
Farmer John's Challenge
constructive algorithms
,
math
800
x17319
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x28066
1930B
Permutation Printing
brute force
,
constructive algorithms
,
math
1000
x15443
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x25424
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x31755
1927B
Following the String
constructive algorithms
,
greedy
,
strings
900
x33519
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x29013
1922A
Tricky Template
constructive algorithms
,
implementation
,
strings
800
x27099
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x24048
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x30401
1917A
Least Product
constructive algorithms
,
math
800
x25638
1916B
Two Divisors
constructive algorithms
,
math
,
number theory
1000
x26195
1916A
2023
constructive algorithms
,
implementation
,
math
,
number theory
800
x26161
1914B
Preparing for the Contest
constructive algorithms
,
math
800
x30565
1905A
Constructive Problems
constructive algorithms
,
math
800
x23091
1902A
Binary Imbalance
constructive algorithms
800
x21291
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x29225
1894B
Two Out of Three
constructive algorithms
1000
x16089
1891A
Sorting with Twos
constructive algorithms
,
sortings
800
x19341
1890B
Qingshan Loves Strings
constructive algorithms
,
implementation
800
x17613
1890A
Doremy's Paint 3
constructive algorithms
800
x27850
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x26011
1879B
Chips on the Board
constructive algorithms
,
greedy
900
x22767
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x31647
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x19132
1869A
Make It Zero
constructive algorithms
900
x22384
1867B
XOR Palindromes
bitmasks
,
constructive algorithms
,
strings
1100
x16873
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x20052
1864B
Swap and Reverse
constructive algorithms
,
greedy
,
sortings
,
strings
1100
x15460
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x20400
1862B
Sequence Game
constructive algorithms
800
x33060
1861B
Two Binary Strings
constructive algorithms
,
dp
,
greedy
1000
x21583
1861A
Prime Deletion
constructive algorithms
,
math
800
x24024
1860A
Not a Substring
constructive algorithms
,
strings
900
x21843
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x27915
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x33506
1858C
Yet Another Permutation Problem
constructive algorithms
,
greedy
,
math
,
number theory
1000
x23284
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x29663
1845A
Forbidden Integer
constructive algorithms
,
implementation
,
math
,
number theory
800
x28317
1844B
Permutations & Primes
constructive algorithms
,
math
1000
x18336
1844A
Subtraction Game
constructive algorithms
,
games
800
x24664
1841A
Game with Board
constructive algorithms
,
games
800
x24787
1838B
Minimize Permutation Subarrays
constructive algorithms
,
math
1100
x16528
1838A
Blackboard List
constructive algorithms
,
math
800
x21621
1837C
Best Binary String
constructive algorithms
,
greedy
1000
x22224
1837A
Grasshopper on a Line
constructive algorithms
,
math
800
x33437
1831B
Array merging
constructive algorithms
,
greedy
1000
x21428
1831A
Twin Permutations
constructive algorithms
800
x27691
1828A
Divisible Array
constructive algorithms
,
math
800
x23793
1823A
A-characteristic
combinatorics
,
constructive algorithms
,
math
800
x16224
1818B
Indivisible
constructive algorithms
900
x15135
1816B
Grid Reconstruction
constructive algorithms
,
greedy
1000
x15391
1816A
Ian Visits Mary
constructive algorithms
,
geometry
,
number theory
800
x17677
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