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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
44:38:17
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brute force
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
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strings
ternary search
trees
two pointers
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Problems
#
Name
988D
Points and Powers of Two
brute force
,
math
1800
x6737
1758D
Range = √Sum
binary search
,
brute force
,
constructive algorithms
,
math
,
two pointers
1800
x6752
3C
Tic-tac-toe
brute force
,
games
,
implementation
1800
x6764
1466E
Apollo versus Pan
bitmasks
,
brute force
,
math
1800
x6885
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7138
1841C
Ranom Numbers
brute force
,
dp
,
greedy
,
math
,
strings
1800
x7140
1244D
Paint the Tree
brute force
,
constructive algorithms
,
dp
,
graphs
,
implementation
,
trees
1800
x7168
1426E
Rock, Paper, Scissors
brute force
,
constructive algorithms
,
flows
,
greedy
,
math
1800
x7177
1335E2
Three Blocks Palindrome (hard version)
brute force
,
data structures
,
dp
,
two pointers
1800
x7903
1572A
Book
binary search
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
1800
x8446
1500A
Going Home
brute force
,
hashing
,
implementation
,
math
1800
x8474
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x8744
300C
Beautiful Numbers
brute force
,
combinatorics
1800
x8756
1396B
Stoned Game
brute force
,
constructive algorithms
,
games
,
greedy
1800
x10777
448D
Multiplication Table
binary search
,
brute force
1800
x13136
183B
Zoo
brute force
,
geometry
1700
x671
202B
Brand New Easy Problem
brute force
1700
x803
98A
Help Victoria the Wise
brute force
,
implementation
1700
x1162
106D
Treasure Island
brute force
,
implementation
1700
x1285
65B
Harry Potter and the History of Magic
brute force
,
greedy
,
implementation
1700
x1305
63C
Bulls and Cows
brute force
,
implementation
1700
x1616
305B
Continued Fractions
brute force
,
implementation
,
math
1700
x2026
18B
Platforms
brute force
,
math
1700
x2047
442A
Borya and Hanabi
bitmasks
,
brute force
,
implementation
1700
x2089
769D
k-Interesting Pairs Of Integers
*special problem
,
bitmasks
,
brute force
,
meet-in-the-middle
1700
x2195
281B
Nearest Fraction
brute force
,
implementation
,
two pointers
1700
x2917
156A
Message
brute force
1700
x2983
850A
Five Dimensional Points
brute force
,
geometry
,
math
1700
x2990
14C
Four Segments
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3018
1142A
The Beatles
brute force
,
math
1700
x3250
938C
Constructing Tests
binary search
,
brute force
,
constructive algorithms
1700
x3264
451C
Predict Outcome of the Game
brute force
,
implementation
,
math
1700
x3293
581D
Three Logos
bitmasks
,
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3388
1580A
Portal
brute force
,
data structures
,
dp
,
greedy
,
implementation
1700
x3519
471C
MUH and House of Cards
binary search
,
brute force
,
greedy
,
math
1700
x3529
1129A1
Toy Train (Simplified)
brute force
,
greedy
1700
x3752
439C
Devu and Partitioning of the Array
brute force
,
constructive algorithms
,
implementation
,
number theory
1700
x3786
761D
Dasha and Very Difficult Problem
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
1700
x3931
685A
Robbers' watch
brute force
,
combinatorics
,
dp
,
math
1700
x4131
766C
Mahmoud and a Message
brute force
,
dp
,
greedy
,
strings
1700
x4299
1202B
You Are Given a Decimal String...
brute force
,
dp
,
shortest paths
1700
x4334
789B
Masha and geometric depression
brute force
,
implementation
,
math
1700
x4339
831C
Jury Marks
brute force
,
constructive algorithms
1700
x4341
1043D
Mysterious Crime
brute force
,
combinatorics
,
math
,
meet-in-the-middle
,
two pointers
1700
x4357
900C
Remove Extra One
brute force
,
data structures
,
math
1700
x4395
1019A
Elections
brute force
,
greedy
1700
x4500
1579F
Array Stabilization (AND version)
brute force
,
graphs
,
math
,
number theory
,
shortest paths
1700
x4529
1903D1
Maximum And Queries (easy version)
binary search
,
bitmasks
,
brute force
,
greedy
1700
x4870
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x4913
1210A
Anadi and Domino
brute force
,
graphs
1700
x5097
578B
"Or" Game
brute force
,
greedy
1700
x5102
1132C
Painting the Fence
brute force
1700
x5150
1735D
Meta-set
brute force
,
combinatorics
,
data structures
,
hashing
,
math
1700
x5202
1884C
Medium Design
brute force
,
data structures
,
dp
,
greedy
,
sortings
1700
x5238
1118D1
Coffee and Coursework (Easy version)
brute force
,
greedy
1700
x5317
1561D1
Up the Strip (simplified version)
brute force
,
data structures
,
dp
,
math
,
number theory
1700
x5337
1015E1
Stars Drawing (Easy Edition)
brute force
,
dp
,
greedy
1700
x5394
1822F
Gardening Friends
brute force
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x5403
815A
Karen and Game
brute force
,
greedy
,
implementation
1700
x5565
1210B
Marcin and Training Camp
brute force
,
greedy
1700
x5651
1807F
Bouncy Ball
brute force
,
dfs and similar
,
implementation
1700
x5767
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x5936
1111B
Average Superhero Gang Power
brute force
,
implementation
,
math
1700
x6019
1111C
Creative Snap
binary search
,
brute force
,
divide and conquer
,
math
1700
x6054
1009D
Relatively Prime Graph
brute force
,
constructive algorithms
,
graphs
,
greedy
,
math
1700
x6118
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6217
1822G1
Magic Triples (Easy Version)
brute force
,
data structures
,
math
,
number theory
1700
x6280
1073D
Berland Fair
binary search
,
brute force
,
data structures
,
greedy
1700
x6283
489D
Unbearable Controversy of Being
brute force
,
combinatorics
,
dfs and similar
,
graphs
1700
x6510
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6589
1706D1
Chopping Carrots (Easy Version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
number theory
1700
x6600
1660F1
Promising String (easy version)
brute force
,
implementation
,
math
,
strings
1700
x6887
1948D
Tandem Repeats?
brute force
,
strings
,
two pointers
1700
x6914
1217C
The Number Of Good Substrings
binary search
,
bitmasks
,
brute force
1700
x7045
1185C2
Exam in BerSU (hard version)
brute force
,
data structures
,
greedy
,
math
1700
x7117
1114C
Trailing Loves (or L'oeufs?)
brute force
,
implementation
,
math
,
number theory
1700
x7154
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7184
1835A
k-th equality
brute force
,
implementation
,
math
1700
x7296
1491C
Pekora and Trampoline
brute force
,
data structures
,
dp
,
greedy
,
implementation
1700
x7672
1512G
Short Task
brute force
,
dp
,
math
,
number theory
1700
x7696
1916D
Mathematical Problem
brute force
,
constructive algorithms
,
geometry
,
math
1700
x7706
1770C
Koxia and Number Theory
brute force
,
chinese remainder theorem
,
math
,
number theory
1700
x8187
1826D
Running Miles
brute force
,
dp
,
greedy
1700
x8232
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8773
490C
Hacking Cypher
brute force
,
math
,
number theory
,
strings
1700
x8872
1469D
Ceil Divisions
brute force
,
constructive algorithms
,
math
,
number theory
1700
x9084
1681D
Required Length
brute force
,
dfs and similar
,
dp
,
hashing
,
shortest paths
1700
x9149
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9311
1814B
Long Legs
brute force
,
math
1700
x9371
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9458
1550C
Manhattan Subarrays
brute force
,
geometry
,
greedy
,
implementation
1700
x9864
1695C
Zero Path
brute force
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x10214
1335E1
Three Blocks Palindrome (easy version)
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x10349
1467B
Hills And Valleys
brute force
,
implementation
1700
x10659
1400B
RPG Protagonist
brute force
,
greedy
,
math
1700
x10797
486C
Palindrome Transformation
brute force
,
greedy
,
implementation
1700
x11446
1360F
Spy-string
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
hashing
,
strings
1700
x11740
1474C
Array Destruction
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1700
x12091
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12144
1554B
Cobb
bitmasks
,
brute force
,
greedy
,
math
1700
x12315
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