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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
22:32:45
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Difficulty:
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implementation
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
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Custom test
Problems
#
Name
1822A
TubeTube Feed
brute force
,
implementation
800
x23395
1326B
Maximums
implementation
,
math
900
x23383
1809A
Garland
implementation
800
x23289
1766A
Extremely Round
brute force
,
implementation
800
x23223
272A
Dima and Friends
implementation
,
math
1000
x23183
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x23161
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23132
1430C
Numbers on Whiteboard
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
1000
x23116
1506C
Double-ended Strings
brute force
,
implementation
,
strings
1000
x22902
1856B
Good Arrays
implementation
,
math
900
x22753
1005A
Tanya and Stairways
implementation
800
x22714
1363B
Subsequence Hate
implementation
,
strings
1400
x22713
1674C
Infinite Replacement
combinatorics
,
implementation
,
strings
1000
x22693
1744B
Even-Odd Increments
implementation
,
math
800
x22602
404A
Valera and X
implementation
1000
x22580
1351A
A+B (Trial Problem)
implementation
800
x22566
1907B
YetnotherrokenKeoard
data structures
,
implementation
,
strings
1000
x22561
1598A
Computer Game
brute force
,
dfs and similar
,
dp
,
implementation
800
x22556
1334A
Level Statistics
implementation
,
math
1200
x22554
1790C
Premutation
brute force
,
implementation
,
math
1000
x22548
1923A
Moving Chips
greedy
,
implementation
800
x22424
1647A
Madoka and Math Dad
implementation
,
math
800
x22388
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x22387
165A
Supercentral Point
implementation
1000
x22387
1616A
Integer Diversity
implementation
800
x22364
285C
Building Permutation
greedy
,
implementation
,
sortings
1200
x22316
1362A
Johnny and Ancient Computer
implementation
1000
x22159
1618B
Missing Bigram
implementation
800
x22141
1739A
Immobile Knight
implementation
800
x22126
1453A
Cancel the Trains
implementation
800
x22126
1365C
Rotation Matching
constructive algorithms
,
data structures
,
greedy
,
implementation
1400
x22070
1694A
Creep
greedy
,
implementation
800
x22041
1760D
Challenging Valleys
implementation
,
two pointers
1000
x22028
1005B
Delete from the Left
brute force
,
implementation
,
strings
900
x22015
1705B
Mark the Dust Sweeper
constructive algorithms
,
greedy
,
implementation
900
x22006
1300B
Assigning to Classes
greedy
,
implementation
,
sortings
1000
x21998
483A
Counterexample
brute force
,
implementation
,
math
,
number theory
1100
x21962
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x21901
999A
Mishka and Contest
brute force
,
implementation
800
x21899
1749A
Cowardly Rooks
greedy
,
implementation
800
x21849
294A
Shaass and Oskols
implementation
,
math
800
x21833
1857B
Maximum Rounding
greedy
,
implementation
,
math
1100
x21827
1913A
Rating Increase
implementation
800
x21802
1511C
Yet Another Card Deck
brute force
,
data structures
,
implementation
,
trees
1100
x21783
501A
Contest
implementation
900
x21774
1926C
Vlad and a Sum of Sum of Digits
dp
,
implementation
1200
x21747
716A
Crazy Computer
implementation
800
x21715
300A
Array
brute force
,
constructive algorithms
,
implementation
1100
x21704
1176A
Divide it!
brute force
,
greedy
,
implementation
800
x21688
1709B
Also Try Minecraft
data structures
,
dp
,
implementation
900
x21659
1713A
Traveling Salesman Problem
geometry
,
greedy
,
implementation
800
x21572
129A
Cookies
implementation
900
x21559
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x21527
1B
Spreadsheet
implementation
,
math
1600
x21477
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x21405
1721B
Deadly Laser
implementation
1000
x21396
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x21293
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x21223
1333B
Kind Anton
greedy
,
implementation
1100
x21180
248A
Cupboards
implementation
800
x21161
1061A
Coins
greedy
,
implementation
,
math
800
x21153
1146A
Love "A"
implementation
,
strings
800
x21148
1620A
Equal or Not Equal
constructive algorithms
,
dsu
,
implementation
800
x21098
1228A
Distinct Digits
brute force
,
implementation
800
x21092
1294B
Collecting Packages
implementation
,
sortings
1200
x21066
1613B
Absent Remainder
greedy
,
implementation
,
sortings
1000
x21041
1108A
Two distinct points
implementation
800
x20992
1095B
Array Stabilization
implementation
900
x20918
1006A
Adjacent Replacements
implementation
800
x20894
1454C
Sequence Transformation
greedy
,
implementation
1200
x20882
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x20882
1406A
Subset Mex
greedy
,
implementation
,
math
900
x20830
1669D
Colorful Stamp
implementation
1100
x20805
1405B
Array Cancellation
constructive algorithms
,
implementation
1000
x20788
1691B
Shoe Shuffling
constructive algorithms
,
greedy
,
implementation
,
two pointers
1000
x20699
1555C
Coin Rows
brute force
,
constructive algorithms
,
dp
,
implementation
1300
x20655
1845B
Come Together
geometry
,
implementation
,
math
900
x20610
1698B
Rising Sand
constructive algorithms
,
greedy
,
implementation
800
x20589
1285B
Just Eat It!
dp
,
greedy
,
implementation
1300
x20572
1300A
Non-zero
implementation
,
math
800
x20570
1141B
Maximal Continuous Rest
implementation
900
x20514
746A
Compote
implementation
,
math
800
x20401
1644B
Anti-Fibonacci Permutation
brute force
,
constructive algorithms
,
implementation
800
x20376
38A
Army
implementation
800
x20359
1937A
Shuffle Party
implementation
,
math
800
x20315
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x20314
1494A
ABC String
bitmasks
,
brute force
,
implementation
900
x20312
1426B
Symmetric Matrix
implementation
900
x20275
913A
Modular Exponentiation
implementation
,
math
900
x20226
1841B
Keep it Beautiful
implementation
1000
x20225
1850E
Cardboard for Pictures
binary search
,
geometry
,
implementation
,
math
1100
x20210
1015A
Points in Segments
implementation
800
x20198
1499B
Binary Removals
brute force
,
dp
,
greedy
,
implementation
1000
x20141
1411A
In-game Chat
implementation
800
x20091
1619C
Wrong Addition
implementation
1200
x20081
1371C
A Cookie for You
greedy
,
implementation
,
math
1300
x20080
1658A
Marin and Photoshoot
constructive algorithms
,
implementation
,
math
800
x20078
1671A
String Building
implementation
800
x20072
1767A
Cut the Triangle
implementation
800
x20043
1287A
Angry Students
greedy
,
implementation
800
x20041
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