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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
09:05:54
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combine-tags-by-or
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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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Problems
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Custom test
Problems
#
Name
2038N
Fixing the Expression
implementation
800
x5585
2038J
Waiting for...
greedy
,
implementation
800
x4299
2037B
Intercepted Inputs
brute force
,
implementation
800
x16968
2037A
Twice
implementation
800
x21885
2036B
Startup
greedy
,
sortings
800
x22732
2036A
Quintomania
implementation
800
x30148
2035A
Sliding
implementation
,
math
800
x14733
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x32703
2032A
Circuit
greedy
,
implementation
,
math
,
number theory
800
x20091
2031A
Penchick and Modern Monument
constructive algorithms
,
dp
,
greedy
,
math
800
x14335
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x19979
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x23325
2029A
Set
greedy
,
math
800
x10825
2027A
Rectangle Arrangement
geometry
,
implementation
,
math
800
x18412
2025A
Two Screens
binary search
,
greedy
,
strings
,
two pointers
800
x23395
2024A
Profitable Interest Rate
greedy
,
math
800
x18742
2022A
Bus to Pénjamo
constructive algorithms
,
greedy
,
implementation
,
math
800
x13697
2021A
Meaning Mean
data structures
,
greedy
,
math
,
sortings
800
x18538
2020A
Find Minimum Operations
bitmasks
,
brute force
,
greedy
,
math
,
number theory
800
x21829
2019A
Max Plus Size
brute force
,
dp
,
greedy
800
x22797
2014B
Robin Hood and the Major Oak
math
800
x28183
2014A
Robin Helps
greedy
,
implementation
800
x36933
2013A
Zhan's Blender
constructive algorithms
,
math
800
x27069
2010B
Three Brothers
brute force
,
implementation
,
math
800
x19821
2010A
Alternating Sum of Numbers
brute force
,
implementation
,
math
800
x16756
2009B
osu!mania
brute force
,
implementation
800
x41736
2009A
Minimize!
brute force
,
math
800
x51221
2008C
Longest Good Array
binary search
,
brute force
,
math
800
x30302
2008B
Square or Not
brute force
,
math
,
strings
800
x28470
2008A
Sakurako's Exam
brute force
,
constructive algorithms
,
greedy
,
math
800
x35151
2007A
Dora's Set
greedy
,
math
,
number theory
800
x22619
2004A
Closest Point
implementation
,
math
800
x30265
2003B
Turtle and Piggy Are Playing a Game 2
games
,
greedy
,
sortings
800
x25098
2003A
Turtle and Good Strings
greedy
,
strings
800
x28911
2002A
Distanced Coloring
constructive algorithms
,
implementation
,
math
800
x19430
2001B
Generate Permutation
constructive algorithms
800
x24004
2001A
Make All Equal
greedy
,
implementation
800
x29542
2000B
Seating in a Bus
two pointers
800
x33794
2000A
Primary Task
implementation
,
math
,
strings
800
x37330
1999C
Showering
greedy
,
implementation
800
x35086
1999A
A+B Again?
implementation
,
math
800
x56160
1998A
Find K Distinct Points with Fixed Center
constructive algorithms
,
implementation
,
math
800
x23947
1997A
Strong Password
brute force
,
implementation
,
strings
800
x29245
1996B
Scale
greedy
,
implementation
800
x32594
1996A
Legs
binary search
,
math
,
ternary search
800
x43300
1995A
Diagonals
brute force
,
greedy
,
implementation
,
math
800
x24244
1994A
Diverse Game
constructive algorithms
,
greedy
,
implementation
800
x20252
1993A
Question Marks
greedy
,
implementation
800
x29427
1992B
Angry Monk
greedy
,
math
,
sortings
800
x34312
1992A
Only Pluses
brute force
,
constructive algorithms
,
greedy
,
math
,
sortings
800
x41386
1991A
Maximize the Last Element
greedy
,
implementation
800
x21868
1989A
Catch the Coin
implementation
800
x26410
1987A
Upload More RAM
greedy
,
math
800
x25394
1986A
X Axis
brute force
,
geometry
,
math
,
sortings
800
x40632
1985B
Maximum Multiple Sum
brute force
,
math
,
number theory
800
x46515
1985A
Creating Words
implementation
,
strings
800
x54155
1984A
Strange Splitting
constructive algorithms
800
x21184
1983A
Array Divisibility
constructive algorithms
,
math
800
x25709
1982A
Soccer
greedy
,
implementation
,
math
,
sortings
800
x25187
1981A
Turtle and Piggy Are Playing a Game
brute force
,
greedy
,
math
800
x22330
1980B
Choosing Cubes
sortings
,
sortings
800
x34767
1980A
Problem Generator
math
800
x40774
1979A
Guess the Maximum
brute force
,
greedy
,
implementation
800
x29089
1978B
New Bakery
binary search
,
greedy
,
math
,
ternary search
800
x22417
1978A
Alice and Books
constructive algorithms
,
greedy
,
sortings
800
x25786
1977A
Little Nikita
math
800
x33209
1976A
Verify Password
implementation
,
sortings
,
strings
800
x28674
1975A
Bazoka and Mocha's Array
brute force
,
greedy
,
implementation
,
sortings
800
x18550
1974B
Symmetric Encoding
implementation
,
sortings
,
strings
800
x30356
1974A
Phone Desktop
greedy
,
math
800
x33308
1972A
Contest Proposal
brute force
,
greedy
,
two pointers
800
x23008
1971B
Different String
implementation
,
strings
800
x37114
1971A
My First Sorting Problem
implementation
,
sortings
800
x45674
1969A
Two Friends
constructive algorithms
,
implementation
,
math
800
x20008
1968B
Prefiquence
greedy
,
two pointers
800
x28016
1968A
Maximize?
brute force
,
math
,
number theory
800
x34737
1966A
Card Exchange
constructive algorithms
,
games
,
greedy
800
x17932
1957A
Stickogon
constructive algorithms
,
greedy
800
x23399
1956B
Nene and the Card Game
games
,
greedy
800
x21312
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x21774
1955A
Yogurt Sale
math
800
x43831
1950C
Clock Conversion
implementation
,
math
800
x40201
1950B
Upscaling
implementation
800
x38317
1950A
Stair, Peak, or Neither?
implementation
800
x53706
1948A
Special Characters
brute force
,
constructive algorithms
800
x28648
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x26141
1945A
Setting up Camp
greedy
,
math
800
x27841
1944A
Destroying Bridges
graphs
,
greedy
,
math
800
x23892
1942A
Farmer John's Challenge
constructive algorithms
,
math
800
x17336
1941A
Rudolf and the Ticket
brute force
,
math
800
x42687
1937A
Shuffle Party
implementation
,
math
800
x23256
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x28075
1934A
Too Min Too Max
greedy
,
math
800
x25544
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x33080
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x38373
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x29916
1931B
Make Equal
greedy
800
x32419
1931A
Recovering a Small String
brute force
,
strings
800
x36460
1930A
Maximise The Score
greedy
,
sortings
800
x18710
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x25431
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