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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
3 days
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Difficulty:
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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
1654C
Alice and the Cake
data structures
,
greedy
,
implementation
,
sortings
1400
x13567
1648A
Weird Sum
combinatorics
,
data structures
,
geometry
,
math
,
matrices
,
sortings
1400
x13139
1644C
Increase Subarray Sums
brute force
,
dp
,
greedy
,
implementation
1400
x13864
1634B
Fortune Telling
bitmasks
,
math
1400
x16827
1628A
Meximum Array
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
1400
x15741
1627C
Not Assigning
constructive algorithms
,
dfs and similar
,
number theory
,
trees
1400
x14634
1624D
Palindromes Coloring
binary search
,
greedy
,
sortings
,
strings
1400
x17170
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9800
1606C
Banknotes
greedy
,
number theory
1400
x14244
1605C
Dominant Character
brute force
,
greedy
,
implementation
,
strings
1400
x17122
1600J
Robot Factory
bitmasks
,
dfs and similar
1400
x3966
1579D
Productive Meeting
constructive algorithms
,
graphs
,
greedy
1400
x16185
1573B
Swaps
greedy
,
math
,
sortings
1400
x14652
1559D1
Mocha and Diana (Easy Version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
trees
1400
x13976
1551B2
Wonderful Coloring - 2
binary search
,
constructive algorithms
,
data structures
,
greedy
1400
x15596
1548A
Web of Lies
brute force
,
graphs
,
greedy
1400
x16528
1540A
Great Graphs
constructive algorithms
,
graphs
,
greedy
,
shortest paths
,
sortings
1400
x14013
1535C
Unstable String
binary search
,
dp
,
greedy
,
implementation
,
strings
,
two pointers
1400
x16595
1526B
I Hate 1111
dp
,
math
,
number theory
1400
x31038
1520E
Arranging The Sheep
greedy
,
math
1400
x21730
1519C
Berland Regional
brute force
,
data structures
,
greedy
,
number theory
,
sortings
1400
x17126
1517C
Fillomino 2
constructive algorithms
,
dfs and similar
,
greedy
,
implementation
1400
x13413
1515C
Phoenix and Towers
constructive algorithms
,
data structures
,
greedy
1400
x17261
1513B
AND Sequences
bitmasks
,
combinatorics
,
constructive algorithms
,
math
1400
x14943
1506D
Epic Transformation
constructive algorithms
,
data structures
,
greedy
1400
x22179
1505C
Fibonacci Words
*special problem
,
implementation
1400
x6463
1494B
Berland Crossword
bitmasks
,
brute force
,
greedy
,
implementation
1400
x14441
1490E
Accidental Victory
binary search
,
data structures
,
greedy
1400
x19253
1475C
Ball in Berland
combinatorics
,
graphs
,
math
1400
x21435
1468C
Berpizza
data structures
,
implementation
1400
x8124
1463B
Find The Array
bitmasks
,
constructive algorithms
,
greedy
1400
x19546
1462D
Add to Neighbour and Remove
greedy
,
math
,
number theory
1400
x16860
1461B
Find the Spruce
brute force
,
dp
,
implementation
1400
x12677
1453B
Suffix Operations
constructive algorithms
,
implementation
1400
x13398
1452B
Toy Blocks
binary search
,
greedy
,
math
,
sortings
1400
x14784
1451C
String Equality
dp
,
greedy
,
hashing
,
implementation
,
strings
1400
x15692
1443C
The Delivery Dilemma
binary search
,
greedy
,
sortings
1400
x15497
1431B
Polycarp and the Language of Gods
*special problem
,
implementation
,
two pointers
1400
x1014
1427B
Chess Cheater
greedy
,
implementation
,
sortings
1400
x10955
1425F
Flamingoes of Mystery
interactive
1400
x5823
1425A
Arena of Greed
games
,
greedy
1400
x6614
1421C
Palindromifier
constructive algorithms
,
strings
1400
x12865
1415C
Bouncing Ball
brute force
,
dp
,
implementation
1400
x10985
1408B
Arrays Sum
constructive algorithms
,
greedy
,
math
1400
x9998
1393B
Applejack and Storages
constructive algorithms
,
data structures
,
greedy
,
implementation
1400
x16764
1380C
Create The Teams
brute force
,
dp
,
greedy
,
implementation
,
sortings
1400
x20862
1380B
Universal Solution
greedy
1400
x14647
1375C
Element Extermination
constructive algorithms
,
data structures
,
greedy
1400
x21309
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x24101
1370C
Number Game
games
,
math
,
number theory
1400
x24762
1369C
RationalLee
greedy
,
math
,
sortings
,
two pointers
1400
x19677
1365C
Rotation Matching
constructive algorithms
,
data structures
,
greedy
,
implementation
1400
x23250
1363B
Subsequence Hate
implementation
,
strings
1400
x23767
1362C
Johnny and Another Rating Drop
bitmasks
,
greedy
,
math
1400
x18570
1355D
Game With Array
constructive algorithms
,
math
1400
x18124
1354C1
Simple Polygon Embedding
binary search
,
geometry
,
math
,
ternary search
1400
x15737
1351C
Skier
data structures
,
implementation
1400
x8622
1350B
Orac and Models
dp
,
math
,
number theory
1400
x22531
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x25520
1346B
Boot Camp
*special problem
,
greedy
1400
x1211
1332B
Composite Coloring
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1400
x17676
1330B
Dreamoon Likes Permutations
implementation
,
math
1400
x14085
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x28776
1320A
Journey Planning
data structures
,
dp
,
greedy
,
math
,
sortings
1400
x16595
1316B
String Modification
brute force
,
constructive algorithms
,
implementation
,
sortings
,
strings
1400
x11297
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x16657
1303B
National Project
math
1400
x15861
1292A
NEKO's Maze Game
data structures
,
dsu
,
implementation
1400
x13402
1285C
Fadi and LCM
brute force
,
math
,
number theory
1400
x23799
1284B
New Year and Ascent Sequence
binary search
,
combinatorics
,
data structures
,
dp
,
implementation
,
sortings
1400
x10862
1282B1
K for the Price of One (Easy Version)
dp
,
greedy
,
sortings
1400
x11560
1279C
Stack of Presents
data structures
,
implementation
1400
x11767
1276A
As Simple as One and Two
dp
,
greedy
1400
x12361
1270C
Make Good
bitmasks
,
constructive algorithms
,
math
1400
x14168
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9726
1263C
Everyone is a Winner!
binary search
,
math
,
meet-in-the-middle
,
number theory
1400
x13792
1263B
PIN Codes
greedy
,
implementation
1400
x11402
1256B
Minimize the Permutation
greedy
1400
x13137
1253B
Silly Mistake
greedy
,
implementation
1400
x11229
1251B
Binary Palindromes
greedy
,
strings
1400
x11028
1250A
Berstagram
implementation
1400
x4090
1245C
Constanze's Machine
dp
1400
x17707
1228B
Filling the Grid
implementation
,
math
1400
x11562
1215B
The Number of Products
combinatorics
,
dp
,
implementation
1400
x13175
1214A
Optimal Currency Exchange
brute force
,
math
1400
x9123
1201C
Maximum Median
binary search
,
greedy
,
math
,
sortings
1400
x24187
1200C
Round Corridor
math
,
number theory
1400
x9914
1197C
Array Splitting
greedy
,
sortings
1400
x13974
1195C
Basketball Exercise
dp
1400
x26505
1190A
Tokitsukaze and Discard Items
implementation
,
two pointers
1400
x9393
1189C
Candies!
data structures
,
dp
,
implementation
,
math
1400
x10624
1184B1
The Doctor Meets Vader (Easy)
binary search
,
sortings
1400
x5434
1183D
Candy Box (easy version)
greedy
,
sortings
1400
x14599
1183C
Computer Game
binary search
,
math
1400
x14059
1167C
News Distribution
dfs and similar
,
dsu
,
graphs
1400
x18823
1167B
Lost Numbers
brute force
,
divide and conquer
,
interactive
,
math
1400
x11855
1162B
Double Matrix
brute force
,
greedy
1400
x5818
1156A
Inscribed Figures
geometry
1400
x8233
1154C
Gourmet Cat
implementation
,
math
1400
x10444
1144D
Equalize Them All
constructive algorithms
,
greedy
1400
x10342
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