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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
43:44:05
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Difficulty:
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math
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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Custom test
Problems
#
Name
621C
Wet Shark and Flowers
combinatorics
,
math
,
number theory
,
probabilities
1700
x5261
1561D1
Up the Strip (simplified version)
brute force
,
data structures
,
dp
,
math
,
number theory
1700
x5337
625A
Guest From the Past
implementation
,
math
1700
x5343
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x5646
1792D
Fixed Prefix Permutations
binary search
,
bitmasks
,
data structures
,
hashing
,
math
,
sortings
1700
x5778
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x5811
1901D
Yet Another Monster Fight
binary search
,
dp
,
greedy
,
implementation
,
math
1700
x5906
1066E
Binary Numbers AND Sum
data structures
,
implementation
,
math
1700
x5947
1215D
Ticket Game
games
,
greedy
,
math
1700
x5950
833A
The Meaningless Game
math
,
number theory
1700
x5984
1111B
Average Superhero Gang Power
brute force
,
implementation
,
math
1700
x6019
1111C
Creative Snap
binary search
,
brute force
,
divide and conquer
,
math
1700
x6054
1936A
Bitwise Operation Wizard
bitmasks
,
constructive algorithms
,
greedy
,
interactive
,
math
1700
x6112
1009D
Relatively Prime Graph
brute force
,
constructive algorithms
,
graphs
,
greedy
,
math
1700
x6118
1562D1
Two Hundred Twenty One (easy version)
data structures
,
dp
,
math
1700
x6149
1194D
1-2-K Game
games
,
math
1700
x6156
630I
Parking Lot
combinatorics
,
math
1700
x6209
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
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6290
1329B
Dreamoon Likes Sequences
bitmasks
,
combinatorics
,
math
1700
x6340
1879D
Sum of XOR Functions
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
1700
x6354
1313B
Different Rules
constructive algorithms
,
greedy
,
implementation
,
math
1700
x6396
1185D
Extra Element
implementation
,
math
1700
x6406
1141E
Superhero Battle
math
1700
x6418
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x6501
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x6542
1091D
New Year and the Permutation Concatenation
combinatorics
,
dp
,
math
1700
x6552
518D
Ilya and Escalator
combinatorics
,
dp
,
math
,
probabilities
1700
x6632
1690F
Shifting String
graphs
,
math
,
number theory
,
strings
1700
x6669
1621C
Hidden Permutations
dfs and similar
,
interactive
,
math
1700
x6689
1551D1
Domino (easy version)
constructive algorithms
,
math
1700
x6796
1829H
Don't Blame Me
bitmasks
,
combinatorics
,
dp
,
math
1700
x6838
1618E
Singers' Tour
constructive algorithms
,
math
1700
x6878
1660F1
Promising String (easy version)
brute force
,
implementation
,
math
,
strings
1700
x6887
1644D
Cross Coloring
data structures
,
implementation
,
math
1700
x6922
1692H
Gambling
data structures
,
dp
,
greedy
,
math
1700
x6930
1810D
Climbing the Tree
binary search
,
math
1700
x6943
1239A
Ivan the Fool and the Probability Theory
combinatorics
,
dp
,
math
1700
x7062
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
1835A
k-th equality
brute force
,
implementation
,
math
1700
x7296
1543D1
RPD and Rap Sheet (Easy Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
1700
x7401
1777C
Quiz Master
binary search
,
math
,
number theory
,
sortings
,
two pointers
1700
x7534
1798C
Candy Store
greedy
,
math
,
number theory
1700
x7649
1512G
Short Task
brute force
,
dp
,
math
,
number theory
1700
x7696
1916D
Mathematical Problem
brute force
,
constructive algorithms
,
geometry
,
math
1700
x7707
1332D
Walk on Matrix
bitmasks
,
constructive algorithms
,
math
1700
x7791
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x7810
1702F
Equate Multisets
constructive algorithms
,
data structures
,
greedy
,
math
,
number theory
1700
x7812
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x7945
1709D
Rorororobot
binary search
,
data structures
,
greedy
,
math
1700
x7976
1422C
Bargain
combinatorics
,
dp
,
math
1700
x8034
1770C
Koxia and Number Theory
brute force
,
chinese remainder theorem
,
math
,
number theory
1700
x8187
1061C
Multiplicity
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x8216
1715C
Monoblock
combinatorics
,
data structures
,
implementation
,
math
1700
x8239
1557C
Moamen and XOR
bitmasks
,
combinatorics
,
dp
,
math
,
matrices
1700
x8246
1598D
Training Session
combinatorics
,
data structures
,
geometry
,
implementation
,
math
1700
x8320
1528B
Kavi on Pairing Duty
combinatorics
,
dp
,
math
1700
x8403
1619E
MEX and Increments
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
sortings
1700
x8541
1228C
Primes and Multiplication
math
,
number theory
1700
x8648
287B
Pipeline
binary search
,
math
1700
x8685
1216C
White Sheet
geometry
,
math
1700
x8693
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8773
1312D
Count the Arrays
combinatorics
,
math
1700
x8833
1661C
Water the Trees
binary search
,
greedy
,
math
1700
x8872
490C
Hacking Cypher
brute force
,
math
,
number theory
,
strings
1700
x8872
1301C
Ayoub's function
binary search
,
combinatorics
,
greedy
,
math
,
strings
1700
x8975
1295B
Infinite Prefixes
math
,
strings
1700
x8995
1658C
Shinju and the Lost Permutation
constructive algorithms
,
math
1700
x9020
1462E2
Close Tuples (hard version)
binary search
,
combinatorics
,
implementation
,
math
,
sortings
,
two pointers
1700
x9083
1469D
Ceil Divisions
brute force
,
constructive algorithms
,
math
,
number theory
1700
x9084
1451D
Circle Game
games
,
geometry
,
math
1700
x9200
1699C
The Third Problem
combinatorics
,
constructive algorithms
,
math
1700
x9288
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
1478C
Nezzar and Symmetric Array
implementation
,
math
,
sortings
1700
x9435
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x9446
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9458
1393C
Pinkie Pie Eats Patty-cakes
constructive algorithms
,
greedy
,
math
,
sortings
1700
x10216
1626C
Monsters And Spells
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1700
x10523
1400B
RPG Protagonist
brute force
,
greedy
,
math
1700
x10797
1336B
Xenia and Colorful Gems
binary search
,
greedy
,
math
,
sortings
,
two pointers
1700
x10912
546D
Soldier and Number Game
constructive algorithms
,
dp
,
math
,
number theory
1700
x11100
1368D
AND, OR and square sum
bitmasks
,
greedy
,
math
1700
x11130
1516C
Baby Ehab Partitions Again
bitmasks
,
constructive algorithms
,
dp
,
math
1700
x11411
1537D
Deleting Divisors
games
,
math
,
number theory
1700
x11741
1554B
Cobb
bitmasks
,
brute force
,
greedy
,
math
1700
x12316
276D
Little Girl and Maximum XOR
bitmasks
,
dp
,
greedy
,
implementation
,
math
1700
x12788
1538D
Another Problem About Dividing Numbers
constructive algorithms
,
math
,
number theory
1700
x12883
1359C
Mixing Water
binary search
,
math
1700
x13175
100E
Lamps in a Line
*special problem
,
math
1600
x262
64C
Table
*special problem
,
greedy
,
implementation
,
math
1600
x330
40B
Repaintings
math
1600
x1103
139B
Wallpaper
implementation
,
math
1600
x1258
73A
The Elder Trolls IV: Oblivon
greedy
,
math
1600
x1289
86A
Reflection
math
1600
x1320
958E1
Guard Duty (easy)
brute force
,
geometry
,
greedy
,
math
1600
x1462
167A
Wizards and Trolleybuses
implementation
,
math
1600
x2002
209A
Multicolored Marbles
dp
,
math
1600
x2212
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