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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
26:39:49
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Difficulty:
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constructive algorithms
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
#
Name
1736D
Equal Binary Subsequences
constructive algorithms
,
geometry
,
greedy
,
implementation
,
strings
2200
x2364
549G
Happy Line
constructive algorithms
,
greedy
,
sortings
2200
x2386
1384B2
Koa and the Beach (Hard Version)
constructive algorithms
,
dp
,
greedy
,
implementation
2200
x2428
1415E
New Game Plus!
constructive algorithms
,
greedy
,
math
2200
x2560
1730D
Prefixes and Suffixes
constructive algorithms
,
strings
,
two pointers
2200
x2571
1373E
Sum of Digits
brute force
,
constructive algorithms
,
dp
,
greedy
2200
x2671
1486E
Paired Payment
binary search
,
brute force
,
constructive algorithms
,
dp
,
flows
,
graphs
,
shortest paths
2200
x2770
1305E
Kuroni and the Score Distribution
constructive algorithms
,
greedy
,
implementation
,
math
2200
x2850
1520F2
Guess the K-th Zero (Hard version)
binary search
,
constructive algorithms
,
data structures
,
interactive
2200
x2865
1867E2
Salyg1n and Array (hard version)
constructive algorithms
,
interactive
2200
x2913
1338C
Perfect Triples
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
math
2200
x2940
1656E
Equal Tree Sums
constructive algorithms
,
dfs and similar
,
math
,
trees
2200
x3255
1437E
Make It Increasing
binary search
,
constructive algorithms
,
data structures
,
dp
,
implementation
2200
x3304
1406D
Three Sequences
constructive algorithms
,
data structures
,
greedy
,
math
2200
x3336
1470D
Strange Housing
constructive algorithms
,
dfs and similar
,
graph matchings
,
graphs
,
greedy
2200
x3552
1110E
Magic Stones
constructive algorithms
,
math
,
sortings
2200
x3775
1438D
Powerful Ksenia
bitmasks
,
constructive algorithms
,
math
2200
x4030
1485D
Multiples and Power Differences
constructive algorithms
,
graphs
,
math
,
number theory
2200
x4904
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x6526
209B
Pixels
constructive algorithms
,
math
2100
x351
132D
Constants in the language of Shakespeare
constructive algorithms
,
dp
,
greedy
2100
x598
370D
Broken Monitor
brute force
,
constructive algorithms
,
greedy
,
implementation
2100
x603
81D
Polycarp's Picture Gallery
constructive algorithms
,
greedy
2100
x626
475C
Kamal-ol-molk's Painting
brute force
,
constructive algorithms
,
greedy
2100
x775
226D
The table
constructive algorithms
,
greedy
2100
x942
441D
Valera and Swaps
constructive algorithms
,
dsu
,
graphs
,
implementation
,
math
,
string suffix structures
2100
x1054
12E
Start of the session
constructive algorithms
2100
x1149
356C
Compartments
combinatorics
,
constructive algorithms
,
greedy
,
implementation
2100
x1226
1666J
Job Lookup
constructive algorithms
,
dp
,
shortest paths
,
trees
2100
x1275
746G
New Roads
constructive algorithms
,
graphs
,
trees
2100
x1299
260D
Black and White Tree
constructive algorithms
,
dsu
,
graphs
,
greedy
,
trees
2100
x1305
266C
Below the Diagonal
constructive algorithms
,
greedy
,
math
2100
x1328
1098B
Nice table
brute force
,
constructive algorithms
,
greedy
,
math
2100
x1463
995A
Tesla
constructive algorithms
,
implementation
2100
x1489
811D
Vladik and Favorite Game
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2100
x1520
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1569
269C
Flawed Flow
constructive algorithms
,
flows
,
graphs
,
greedy
2100
x1587
1158C
Permutation recovery
constructive algorithms
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
math
,
sortings
2100
x1667
748D
Santa Claus and a Palindrome
constructive algorithms
,
data structures
,
greedy
2100
x1801
1776G
Another Wine Tasting Event
combinatorics
,
constructive algorithms
,
math
,
strings
2100
x1924
1023E
Down or Right
constructive algorithms
,
interactive
,
matrices
2100
x1944
1876C
Autosynthesis
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
sortings
2100
x2088
1787E
The Harmonization of XOR
bitmasks
,
constructive algorithms
,
greedy
,
math
2100
x2142
1948E
Clique Partition
brute force
,
constructive algorithms
,
graphs
,
greedy
,
implementation
2100
x2179
985D
Sand Fortress
binary search
,
constructive algorithms
,
math
2100
x2222
840B
Leha and another game about graph
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
graphs
2100
x2228
1868B2
Candy Party (Hard Version)
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
implementation
,
math
2100
x2244
788B
Weird journey
combinatorics
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2100
x2269
780E
Underground Lab
constructive algorithms
,
dfs and similar
,
graphs
2100
x2279
1003E
Tree Constructing
constructive algorithms
,
graphs
2100
x2411
128B
String
brute force
,
constructive algorithms
,
hashing
,
implementation
,
string suffix structures
,
strings
2100
x2437
763B
Timofey and rectangles
constructive algorithms
,
geometry
2100
x2566
1296F
Berland Beauty
constructive algorithms
,
dfs and similar
,
greedy
,
sortings
,
trees
2100
x2606
1748D
ConstructOR
bitmasks
,
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
math
,
number theory
2100
x2626
1551D2
Domino (hard version)
constructive algorithms
,
implementation
,
math
2100
x2632
1166E
The LCMs Must be Large
bitmasks
,
brute force
,
constructive algorithms
,
math
,
number theory
2100
x2633
1734E
Rectangular Congruence
constructive algorithms
,
number theory
2100
x2730
766E
Mahmoud and a xor trip
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
math
,
trees
2100
x2769
1605D
Treelabeling
bitmasks
,
constructive algorithms
,
dfs and similar
,
games
,
greedy
,
implementation
,
trees
2100
x2819
1934D1
XOR Break --- Solo Version
bitmasks
,
constructive algorithms
,
greedy
2100
x2826
1530E
Minimax
constructive algorithms
,
greedy
,
strings
2100
x2858
1254B2
Send Boxes to Alice (Hard Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
2100
x2880
1684E
MEX vs DIFF
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2100
x3007
1419E
Decryption
constructive algorithms
,
implementation
,
math
,
number theory
2100
x3117
576C
Points on Plane
constructive algorithms
,
divide and conquer
,
geometry
,
greedy
,
sortings
2100
x3191
1392E
Omkar and Duck
bitmasks
,
constructive algorithms
,
interactive
,
math
2100
x3212
1553E
Permutation Shift
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
math
2100
x3216
1762D
GCD Queries
constructive algorithms
,
interactive
,
number theory
2100
x3245
675C
Money Transfers
constructive algorithms
,
data structures
,
greedy
,
sortings
2100
x3409
1919D
01 Tree
constructive algorithms
,
data structures
,
dsu
,
greedy
,
sortings
,
trees
2100
x3507
1332E
Height All the Same
combinatorics
,
constructive algorithms
,
math
,
matrices
2100
x3540
1333D
Challenges in school №41
brute force
,
constructive algorithms
,
games
,
graphs
,
greedy
,
implementation
,
sortings
2100
x3622
543B
Destroying Roads
constructive algorithms
,
graphs
,
shortest paths
2100
x3818
1322B
Present
binary search
,
bitmasks
,
constructive algorithms
,
data structures
,
math
,
sortings
2100
x3867
1479B2
Painting the Array II
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
2100
x3868
1366E
Two Arrays
binary search
,
brute force
,
combinatorics
,
constructive algorithms
,
dp
,
two pointers
2100
x3930
1621D
The Winter Hike
constructive algorithms
,
greedy
,
math
2100
x3940
1364D
Ehab's Last Corollary
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
trees
2100
x3996
1560F2
Nearest Beautiful Number (hard version)
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
2100
x4166
1360H
Binary Median
binary search
,
bitmasks
,
brute force
,
constructive algorithms
2100
x4267
1365F
Swaps Again
constructive algorithms
,
implementation
,
sortings
2100
x4276
1370E
Binary Subsequence Rotation
binary search
,
constructive algorithms
,
data structures
,
greedy
2100
x4589
1217D
Coloring Edges
constructive algorithms
,
dfs and similar
,
graphs
2100
x4903
796D
Police Stations
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
2100
x5038
1450C1
Errich-Tac-Toe (Easy Version)
constructive algorithms
,
math
2100
x5277
321C
Ciel the Commander
constructive algorithms
,
dfs and similar
,
divide and conquer
,
greedy
,
trees
2100
x6635
1571F
Kotlinforces
*special problem
,
constructive algorithms
,
dp
2000
x175
176C
Playing with Superglue
combinatorics
,
constructive algorithms
2000
x459
45E
Director
constructive algorithms
,
greedy
2000
x517
44J
Triminoes
constructive algorithms
,
greedy
2000
x550
234H
Merging Two Decks
constructive algorithms
,
greedy
2000
x555
59D
Team Arrangement
constructive algorithms
,
greedy
,
implementation
2000
x597
109D
Lucky Sorting
constructive algorithms
,
sortings
2000
x612
126C
E-reader Display
constructive algorithms
,
greedy
2000
x702
261C
Maxim and Matrix
constructive algorithms
,
dp
,
math
2000
x753
26C
Parquet
combinatorics
,
constructive algorithms
,
greedy
,
implementation
2000
x810
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1039
128D
Numbers
constructive algorithms
,
implementation
2000
x1081
542C
Idempotent functions
constructive algorithms
,
graphs
,
math
2000
x1092
1080D
Olya and magical square
constructive algorithms
,
implementation
,
math
2000
x1502
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