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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
44:57:42
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combine-tags-by-or
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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
1515I
Phoenix and Diamonds
binary search
,
data structures
,
sortings
3400
x220
914H
Ember and Storm's Tree Game
combinatorics
,
dp
,
games
,
trees
3400
x225
627F
Island Puzzle
dfs and similar
,
dsu
,
graphs
,
trees
3400
x225
1684H
Hard Cut
constructive algorithms
,
dfs and similar
,
divide and conquer
,
math
3400
x228
1572F
Stations
data structures
3400
x234
1817E
Half-sum
brute force
,
divide and conquer
,
greedy
3400
x241
1239F
Swiper, no swiping!
graphs
,
implementation
3400
x243
1039E
Summer Oenothera Exhibition
data structures
3400
x257
1693F
I Might Be Wrong
binary search
,
greedy
,
two pointers
3400
x266
1801G
A task for substrings
data structures
,
string suffix structures
,
strings
3400
x273
793G
Oleg and chess
data structures
,
divide and conquer
,
flows
,
graph matchings
3400
x304
1276F
Asterisk Substrings
string suffix structures
3400
x315
794G
Replace All
combinatorics
,
dp
,
math
3400
x316
715E
Complete the Permutations
combinatorics
,
fft
,
graphs
,
math
3400
x331
1548E
Gregor and the Two Painters
data structures
,
divide and conquer
,
graphs
,
greedy
,
math
3400
x333
1827E
Bus Routes
binary search
,
constructive algorithms
,
dfs and similar
,
greedy
,
trees
3400
x348
1693E
Outermost Maximums
data structures
,
greedy
3400
x365
1710D
Recover the Tree
constructive algorithms
,
trees
3400
x403
1482H
Exam
data structures
,
string suffix structures
,
trees
3400
x413
1137F
Matches Are Not a Child's Play
data structures
,
trees
3400
x426
1097E
Egor and an RPG game
constructive algorithms
,
greedy
3400
x452
757G
Can Bash Save the Day?
data structures
,
divide and conquer
,
graphs
,
trees
3400
x469
1630F
Making It Bipartite
flows
,
graph matchings
,
graphs
,
number theory
3400
x482
1119F
Niyaz and Small Degrees
data structures
,
dp
,
trees
3400
x639
843D
Dynamic Shortest Path
graphs
,
shortest paths
3400
x741
1491H
Yuezheng Ling and Dynamic Tree
data structures
,
trees
3400
x744
1912C
Cactus Transformation
constructive algorithms
3300
x42
1912I
Innovative Washing Machine
geometry
,
math
,
two pointers
3300
x48
1666B
Budget Distribution
3300
x52
1936F
Grand Finale: Circles
binary search
,
geometry
3300
x55
949F
Astronomy
geometry
,
probabilities
3300
x56
1578I
Interactive Rays
geometry
,
interactive
3300
x58
865F
Egg Roulette
bitmasks
,
brute force
,
divide and conquer
,
math
,
meet-in-the-middle
3300
x66
1938D
Bánh Bò
3300
x67
737F
Dirty plates
constructive algorithms
,
math
3300
x68
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x77
901E
Cyclic Cipher
fft
,
math
3300
x83
1666A
Admissible Map
3300
x97
1930H
Interactive Mex Tree
constructive algorithms
,
dfs and similar
,
interactive
,
trees
3300
x98
1381E
Origami
geometry
,
math
,
sortings
3300
x98
737E
Tanya is 5!
graph matchings
,
graphs
,
greedy
,
schedules
3300
x113
1737F
Ela and Prime GCD
constructive algorithms
,
math
,
number theory
3300
x114
1266G
Permutation Concatenation
string suffix structures
3300
x114
1477E
Nezzar and Tournaments
data structures
,
greedy
3300
x116
865E
Hex Dyslexia
bitmasks
,
brute force
,
dp
,
graphs
3300
x116
868G
El Toll Caves
math
3300
x117
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x118
1530G
What a Reversal
constructive algorithms
3300
x122
1580F
Problems for Codeforces
combinatorics
,
fft
,
math
3300
x128
865G
Flowers and Chocolate
combinatorics
,
math
,
matrices
3300
x129
1209H
Moving Walkways
data structures
,
greedy
,
math
3300
x132
1017H
The Films
brute force
3300
x132
1718F
Burenka, an Array and Queries
data structures
,
math
,
number theory
3300
x140
1361F
Johnny and New Toy
data structures
,
implementation
,
math
3300
x140
1615G
Maximum Adjacent Pairs
constructive algorithms
,
graph matchings
3300
x145
1943E2
MEX Game 2 (Hard Version)
binary search
,
greedy
,
two pointers
3300
x148
1886F
Diamond Theft
data structures
,
greedy
3300
x153
1450H2
Multithreading (Hard Version)
combinatorics
,
implementation
,
math
3300
x159
1284G
Seollal
graphs
3300
x159
725G
Messages on a Tree
3300
x160
1329E
Dreamoon Loves AA
binary search
,
greedy
3300
x167
1804H
Code Lock
bitmasks
,
dp
3300
x168
1870G
MEXanization
data structures
3300
x193
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x194
1740H
MEX Tree Manipulation
data structures
,
trees
3300
x197
855G
Harry Vs Voldemort
dfs and similar
,
dp
,
graphs
,
trees
3300
x197
1641E
Special Positions
combinatorics
,
divide and conquer
,
fft
,
math
3300
x199
1392I
Kevin and Grid
fft
,
graphs
,
math
3300
x201
1060H
Sophisticated Device
constructive algorithms
3300
x201
1500E
Subset Trick
binary search
,
data structures
3300
x209
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x210
618G
Combining Slimes
dp
,
math
,
matrices
,
probabilities
3300
x214
1750G
Doping
combinatorics
,
dp
,
math
3300
x218
1738H
Palindrome Addicts
data structures
,
strings
3300
x221
1188E
Problem from Red Panda
combinatorics
3300
x221
1548D2
Gregor and the Odd Cows (Hard)
brute force
,
geometry
,
math
,
number theory
3300
x236
607E
Cross Sum
binary search
,
geometry
3300
x242
1054G
New Road Network
constructive algorithms
,
greedy
,
math
3300
x248
1466H
Finding satisfactory solutions
combinatorics
,
dp
,
graphs
,
greedy
,
math
3300
x253
1427G
One Billion Shades of Grey
flows
,
graphs
3300
x255
1254E
Send Tree to Charlie
combinatorics
,
dfs and similar
,
dsu
,
trees
3300
x258
1172E
Nauuo and ODT
data structures
3300
x259
1083F
The Fair Nut and Amusing Xor
data structures
3300
x259
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x262
704E
Iron Man
data structures
,
geometry
,
trees
3300
x265
1528F
AmShZ Farm
combinatorics
,
fft
,
math
3300
x266
1495F
Squares
constructive algorithms
,
data structures
,
dp
,
graphs
,
trees
3300
x273
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x276
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x283
1322E
Median Mountain Range
data structures
3300
x292
1396D
Rainbow Rectangles
data structures
,
sortings
,
two pointers
3300
x294
1237H
Balanced Reversals
constructive algorithms
3300
x297
1556G
Gates to Another World
bitmasks
,
data structures
,
dsu
,
two pointers
3300
x301
1753E
N Machines
binary search
,
brute force
,
greedy
3300
x302
1583H
Omkar and Tours
data structures
,
divide and conquer
,
sortings
,
trees
3300
x306
1552H
Guess the Perimeter
binary search
,
interactive
,
number theory
3300
x311
1148G
Gold Experience
constructive algorithms
,
graphs
,
math
,
number theory
,
probabilities
3300
x311
1610G
AmShZ Wins a Bet
data structures
,
greedy
,
hashing
3300
x315
1556H
DIY Tree
graphs
,
greedy
,
math
,
probabilities
3300
x316
983D
Arkady and Rectangles
data structures
3300
x317
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