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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
36:41:42
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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
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Problems
#
Name
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x81
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x88
1534H
Lost Nodes
constructive algorithms
,
dp
,
graphs
,
interactive
,
sortings
,
trees
3500
x141
1515H
Phoenix and Bits
bitmasks
,
brute force
,
data structures
,
sortings
3500
x201
1637H
Minimize Inversions Number
data structures
,
greedy
,
math
,
sortings
3500
x297
833E
Caramel Clouds
data structures
,
dp
,
sortings
3400
x208
1515I
Phoenix and Diamonds
binary search
,
data structures
,
sortings
3400
x220
1381E
Origami
geometry
,
math
,
sortings
3300
x98
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x276
1396D
Rainbow Rectangles
data structures
,
sortings
,
two pointers
3300
x294
1583H
Omkar and Tours
data structures
,
divide and conquer
,
sortings
,
trees
3300
x306
1558F
Strange Sort
data structures
,
sortings
3300
x342
1534G
A New Beginning
data structures
,
dp
,
geometry
,
sortings
3300
x499
1896G
Pepe Racing
constructive algorithms
,
implementation
,
interactive
,
sortings
3200
x221
1762G
Unequal Adjacent Elements
constructive algorithms
,
sortings
3100
x95
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x109
1740G
Dangerous Laser Power
constructive algorithms
,
dsu
,
sortings
3100
x176
720D
Slalom
data structures
,
dp
,
sortings
3100
x193
528E
Triangles 3000
geometry
,
sortings
3100
x213
1805F2
Survival of the Weakest (hard version)
greedy
,
math
,
sortings
,
two pointers
3100
x316
1508E
Tree Calendar
brute force
,
constructive algorithms
,
data structures
,
dfs and similar
,
sortings
,
trees
3100
x321
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x438
1476G
Minimum Difference
data structures
,
hashing
,
sortings
,
two pointers
3100
x518
434E
Furukawa Nagisa's Tree
binary search
,
divide and conquer
,
sortings
,
trees
3000
x252
1181E2
A Story of One Country (Hard)
brute force
,
greedy
,
sortings
3000
x255
778E
Selling Numbers
dp
,
sortings
3000
x294
773E
Blog Post Rating
data structures
,
sortings
3000
x315
1552G
A Serious Referee
bitmasks
,
brute force
,
dfs and similar
,
sortings
3000
x441
798E
Mike and code of a permutation
constructive algorithms
,
data structures
,
graphs
,
sortings
3000
x449
1508D
Swap Pass
constructive algorithms
,
geometry
,
sortings
3000
x520
559E
Gerald and Path
dp
,
sortings
3000
x846
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2015
1402B
Roads
*special problem
,
geometry
,
sortings
2900
x101
1386B
Mixture
*special problem
,
data structures
,
geometry
,
math
,
sortings
2900
x116
478E
Wavy numbers
brute force
,
dfs and similar
,
meet-in-the-middle
,
sortings
2900
x203
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x260
1806F2
GCD Master (hard version)
greedy
,
math
,
sortings
2900
x262
1806F1
GCD Master (easy version)
greedy
,
math
,
number theory
,
sortings
2900
x325
1500D
Tiles for Bathroom
data structures
,
sortings
,
two pointers
2900
x407
48F
Snow sellers
greedy
,
sortings
2800
x122
887E
Little Brother
binary search
,
geometry
,
sortings
2800
x161
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x365
1608E
The Cells on the Paper
binary search
,
implementation
,
sortings
2800
x419
1810F
M-tree
data structures
,
math
,
sortings
,
trees
2800
x520
639E
Bear and Paradox
binary search
,
greedy
,
math
,
sortings
2800
x560
1383D
Rearrange
brute force
,
constructive algorithms
,
graphs
,
greedy
,
sortings
2800
x629
1394D
Boboniu and Jianghu
dp
,
greedy
,
sortings
,
trees
2800
x792
1654F
Minimal String Xoration
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
hashing
,
sortings
,
strings
2800
x1022
613D
Kingdom and its Cities
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
sortings
,
trees
2800
x2594
1682F
MCMF?
data structures
,
flows
,
graphs
,
greedy
,
sortings
,
two pointers
2700
x282
460E
Roland and Rose
brute force
,
geometry
,
math
,
sortings
2700
x333
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x371
1238G
Adilbek and the Watering System
data structures
,
greedy
,
sortings
2700
x386
1388E
Uncle Bogdan and Projections
data structures
,
geometry
,
sortings
2700
x387
1214F
Employment
greedy
,
sortings
2700
x421
1841F
Monocarp and a Strategic Game
geometry
,
sortings
,
two pointers
2700
x462
1682E
Unordered Swaps
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
math
,
sortings
,
trees
2700
x551
1514E
Baby Ehab's Hyper Apartment
binary search
,
graphs
,
interactive
,
sortings
,
two pointers
2700
x559
1019D
Large Triangle
binary search
,
geometry
,
sortings
2700
x611
1799F
Halve or Subtract
binary search
,
brute force
,
dp
,
greedy
,
sortings
2700
x741
1519E
Off by One
constructive algorithms
,
dfs and similar
,
geometry
,
graphs
,
sortings
,
trees
2700
x786
1601D
Difficult Mountain
data structures
,
dp
,
greedy
,
sortings
2700
x1353
140F
New Year Snowflake
geometry
,
sortings
2600
x357
286D
Tourists
data structures
,
sortings
2600
x369
269D
Maximum Waterfall
data structures
,
dp
,
graphs
,
sortings
2600
x412
685D
Kay and Eternity
brute force
,
implementation
,
sortings
2600
x476
173E
Camping Groups
data structures
,
sortings
2600
x530
1267I
Intriguing Selection
brute force
,
constructive algorithms
,
implementation
,
interactive
,
sortings
2600
x676
1107F
Vasya and Endless Credits
dp
,
flows
,
graph matchings
,
graphs
,
sortings
2600
x705
1805F1
Survival of the Weakest (easy version)
binary search
,
brute force
,
implementation
,
math
,
sortings
2600
x793
1539F
Strange Array
data structures
,
greedy
,
sortings
2600
x829
85E
Guard Towers
binary search
,
dsu
,
geometry
,
graphs
,
sortings
2600
x893
1793E
Velepin and Marketing
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2600
x910
1566F
Points Movement
data structures
,
dp
,
greedy
,
implementation
,
sortings
2600
x918
1389F
Bicolored Segments
data structures
,
dp
,
graph matchings
,
sortings
2600
x937
1503D
Flip the Cards
2-sat
,
constructive algorithms
,
data structures
,
greedy
,
sortings
,
two pointers
2600
x959
1656F
Parametric MST
binary search
,
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
2600
x974
797F
Mice and Holes
data structures
,
dp
,
greedy
,
sortings
2600
x1066
887F
Row of Models
greedy
,
sortings
2500
x159
379E
New Year Tree Decorations
geometry
,
schedules
,
sortings
2500
x336
166D
Shoe Store
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
2500
x342
681E
Runaway to a Shadow
geometry
,
sortings
2500
x444
1181E1
A Story of One Country (Easy)
brute force
,
divide and conquer
,
sortings
2500
x445
989D
A Shade of Moonlight
binary search
,
geometry
,
math
,
sortings
,
two pointers
2500
x501
912C
Perun, Ult!
brute force
,
greedy
,
sortings
2500
x505
314D
Sereja and Straight Lines
binary search
,
data structures
,
geometry
,
sortings
,
two pointers
2500
x513
383B
Volcanoes
binary search
,
implementation
,
sortings
,
two pointers
2500
x651
1195F
Geometers Anonymous Club
data structures
,
geometry
,
math
,
sortings
2500
x664
15D
Map
data structures
,
implementation
,
sortings
2500
x702
1918F
Caterpillar on a Tree
dfs and similar
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
2500
x710
1776C
Library game
games
,
greedy
,
interactive
,
sortings
2500
x748
1891E
Brukhovich and Exams
brute force
,
greedy
,
implementation
,
math
,
sortings
2500
x761
1612G
Max Sum Array
combinatorics
,
constructive algorithms
,
greedy
,
sortings
2500
x808
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x841
687D
Dividing Kingdom II
brute force
,
data structures
,
dsu
,
graphs
,
sortings
2500
x848
1764F
Doremy's Experimental Tree
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
sortings
,
trees
2500
x864
1374E2
Reading Books (hard version)
data structures
,
greedy
,
implementation
,
sortings
,
ternary search
,
two pointers
2500
x893
1354F
Summoning Minions
constructive algorithms
,
dp
,
flows
,
graph matchings
,
greedy
,
sortings
2500
x969
1658E
Gojou and Matrix Game
data structures
,
dp
,
games
,
hashing
,
implementation
,
math
,
number theory
,
sortings
2500
x992
1284E
New Year and Castle Construction
combinatorics
,
geometry
,
math
,
sortings
2500
x1030
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