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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
41:59:00
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binary search
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
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x40
1571I
Physical Examination
*special problem
,
binary search
,
data structures
3200
x54
1936F
Grand Finale: Circles
binary search
,
geometry
3300
x55
1427H
Prison Break
binary search
,
games
,
geometry
,
ternary search
3500
x66
1876F
Indefinite Clownfish
binary search
,
graphs
3500
x68
1910H
Sum of Digits of Sums
*special problem
,
binary search
,
data structures
2400
x75
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x78
1906D
Spaceship Exploration
binary search
,
geometry
2800
x81
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x81
1428H
Rotary Laser Lock
binary search
,
interactive
3500
x82
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x88
1071E
Rain Protection
binary search
,
geometry
3500
x88
1275F
Шардирование постов
*special problem
,
binary search
,
interactive
x91
925F
Parametric Circulation
binary search
,
flows
3100
x93
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x95
649E
Автобус
binary search
,
data structures
,
greedy
,
sortings
2100
x102
185E
Soap Time! - 2
binary search
,
data structures
3000
x102
774F
Pens And Days Of Week
*special problem
,
binary search
,
number theory
2700
x104
1305H
Kuroni the Private Tutor
binary search
,
greedy
3500
x105
799G
Cut the pie
binary search
,
data structures
,
geometry
3500
x105
645G
Armistice Area Apportionment
binary search
,
geometry
3200
x108
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x109
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x109
1170F
Wheels
*special problem
,
binary search
,
greedy
x113
1725D
Deducing Sortability
binary search
,
bitmasks
,
math
2900
x115
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x115
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x118
772E
Verifying Kingdom
binary search
,
divide and conquer
,
interactive
,
trees
3200
x121
1250I
Show Must Go On
binary search
,
brute force
,
greedy
,
shortest paths
3100
x124
1901F
Landscaping
binary search
,
geometry
,
two pointers
2900
x138
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x141
1608G
Alphabetic Tree
binary search
,
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
3500
x144
1158E
Strange device
binary search
,
interactive
,
math
,
trees
3400
x146
1943E2
MEX Game 2 (Hard Version)
binary search
,
greedy
,
two pointers
3300
x149
1431F
Neural Network Problem
*special problem
,
binary search
,
greedy
2100
x152
887E
Little Brother
binary search
,
geometry
,
sortings
2800
x161
1488F
Dogecoin
*special problem
,
*special problem
,
binary search
,
data structures
2300
x162
1466I
The Riddle of the Sphinx
binary search
,
data structures
,
data structures
,
interactive
3400
x164
1895G
Two Characters, Two Colors
binary search
,
data structures
,
dp
,
flows
,
greedy
3100
x166
1601F
Two Sorts
binary search
,
dfs and similar
,
math
,
meet-in-the-middle
3400
x166
1329E
Dreamoon Loves AA
binary search
,
greedy
3300
x167
374E
Inna and Babies
binary search
,
data structures
,
dsu
,
geometry
,
implementation
2600
x175
1211E
Double Permutation Inc.
*special problem
,
binary search
,
greedy
2000
x187
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x194
1178H
Stock Exchange
binary search
,
flows
,
graphs
3500
x204
592E
BCPC
binary search
,
geometry
,
two pointers
2700
x206
1533F
Binary String Partition
*special problem
,
binary search
,
greedy
x207
1098E
Fedya the Potter
binary search
,
implementation
,
math
,
number theory
3400
x208
1500E
Subset Trick
binary search
,
data structures
3300
x209
815E
Karen and Neighborhood
binary search
,
constructive algorithms
,
implementation
2900
x216
774B
Significant Cups
*special problem
,
binary search
,
data structures
,
two pointers
2100
x216
309E
Sheep
binary search
,
greedy
2900
x216
1515I
Phoenix and Diamonds
binary search
,
data structures
,
sortings
3400
x220
1211D
Teams
*special problem
,
binary search
,
greedy
,
math
2000
x220
1190E
Tokitsukaze and Explosion
binary search
,
greedy
3100
x220
1223G
Wooden Raft
binary search
,
math
,
number theory
3200
x225
164D
Minimum Diameter
binary search
,
brute force
3100
x228
1109C
Sasha and a Patient Friend
binary search
,
data structures
,
implementation
2800
x235
607E
Cross Sum
binary search
,
geometry
3300
x242
1386A
Colors
*special problem
,
binary search
,
constructive algorithms
,
interactive
2700
x243
1832F
Zombies
binary search
,
dp
3200
x246
1900F
Local Deletions
binary search
,
data structures
,
implementation
2800
x248
1170E
Sliding Doors
*special problem
,
binary search
x251
434E
Furukawa Nagisa's Tree
binary search
,
divide and conquer
,
sortings
,
trees
3000
x252
350D
Looking for Owls
binary search
,
data structures
,
geometry
,
hashing
,
sortings
2400
x252
1297D
Bonus Distribution
*special problem
,
binary search
,
greedy
,
sortings
x254
1540D
Inverse Inversions
binary search
,
brute force
,
data structures
3200
x258
1482G
Vabank
binary search
,
interactive
3200
x259
1943E1
MEX Game 2 (Easy Version)
binary search
,
brute force
,
greedy
2900
x260
1572E
Polygon
binary search
,
dp
,
geometry
3000
x263
1588F
Jumping Through the Array
binary search
,
data structures
,
graphs
,
two pointers
3500
x265
1446F
Line Distance
binary search
,
data structures
,
geometry
3200
x265
121D
Lucky Segments
binary search
,
implementation
,
two pointers
2500
x265
1913F
Palindromic Problem
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2800
x266
1693F
I Might Be Wrong
binary search
,
greedy
,
two pointers
3400
x266
1533E
Chess Team Forming
*special problem
,
binary search
,
data structures
,
greedy
x267
1531E3
Сортировка слиянием
*special problem
,
binary search
x267
1416E
Split
binary search
,
data structures
,
dp
,
greedy
3200
x267
1403A
The Potion of Great Power
*special problem
,
2-sat
,
binary search
,
data structures
,
graphs
,
interactive
,
sortings
,
two pointers
2400
x281
1838F
Stuck Conveyor
binary search
,
constructive algorithms
,
interactive
3000
x287
1470E
Strange Permutation
binary search
,
combinatorics
,
data structures
,
dp
,
graphs
,
implementation
,
two pointers
3200
x289
1923F
Shrink-Reverse
binary search
,
brute force
,
greedy
,
hashing
,
implementation
,
string suffix structures
,
strings
2800
x293
97C
Winning Strategy
binary search
,
graphs
,
math
,
shortest paths
2400
x294
78D
Archer's Shot
binary search
,
geometry
,
math
,
two pointers
2300
x297
1712F
Triameter
binary search
,
data structures
,
dfs and similar
,
trees
3200
x299
721E
Road to Home
binary search
,
dp
2700
x299
1753E
N Machines
binary search
,
brute force
,
greedy
3300
x302
1615H
Reindeer Games
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
flows
,
graphs
,
shortest paths
3000
x304
1468L
Prime Divisors Selection
binary search
,
greedy
,
math
,
number theory
2700
x307
1552H
Guess the Perimeter
binary search
,
interactive
,
number theory
3300
x311
1488D
Problemsolving Marathon
*special problem
,
binary search
,
greedy
1900
x311
1935F
Andrey's Tree
binary search
,
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
implementation
,
trees
2800
x312
1776M
Parmigiana With Seafood
binary search
,
dp
,
greedy
,
trees
3000
x320
774L
Bars
*special problem
,
binary search
2000
x320
1887E
Good Colorings
binary search
,
constructive algorithms
,
graphs
,
interactive
3100
x325
1773H
Hot and Cold
binary search
,
interactive
2600
x327
1182F
Maximum Sine
binary search
,
data structures
,
number theory
2700
x327
11E
Forward, march!
binary search
,
dp
,
greedy
2800
x329
713E
Sonya Partymaker
binary search
,
dp
3300
x332
518F
Pasha and Pipe
binary search
,
brute force
,
combinatorics
,
dp
,
implementation
2300
x340
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