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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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→ Filter Problems
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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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Problems
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Status
Standings
Custom test
Problems
#
Name
200E
Tractor College
implementation
,
math
,
number theory
,
ternary search
2400
x344
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x916
200C
Football Championship
brute force
,
implementation
1800
x1060
200A
Cinema
brute force
,
data structures
2400
x686
199B
Special Olympics
geometry
1900
x805
198E
Gripping Story
binary search
,
data structures
,
sortings
2400
x420
198D
Cube Snake
constructive algorithms
2700
x107
198C
Delivering Carcinogen
binary search
,
geometry
2400
x375
198A
About Bacteria
implementation
,
math
1700
x3157
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6359
196E
Opening Portals
dsu
,
graphs
,
shortest paths
2600
x1021
196D
The Next Good String
data structures
,
greedy
,
hashing
,
strings
2800
x533
196C
Paint Tree
constructive algorithms
,
divide and conquer
,
geometry
,
sortings
,
trees
2200
x960
196B
Infinite Maze
dfs and similar
,
graphs
2000
x2224
195E
Building Forest
data structures
,
dsu
,
graphs
2000
x723
195D
Analyzing Polyline
geometry
,
math
,
sortings
1900
x1044
195C
Try and Catch
expression parsing
,
implementation
1800
x1145
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x343
193D
Two Segments
data structures
2900
x526
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x517
193B
Xor
brute force
2000
x1013
193A
Cutting Figure
constructive algorithms
,
graphs
,
trees
1700
x4014
191E
Thwarting Demonstrations
binary search
,
data structures
,
trees
2200
x856
191D
Metro Scheme
graphs
,
greedy
2700
x365
191C
Fools and Roads
data structures
,
dfs and similar
,
trees
1900
x7298
191B
Demonstration
greedy
1700
x1013
190E
Counter Attack
data structures
,
dsu
,
graphs
,
hashing
,
sortings
2100
x1551
190D
Non-Secret Cypher
two pointers
1900
x2341
190B
Surrounded
geometry
1800
x2857
188H
Stack
*special problem
,
expression parsing
,
implementation
1800
x266
188G
Array Sorting
*special problem
,
implementation
1600
x334
187E
Heaven Tour
data structures
,
greedy
2900
x104
187D
BRT Contract
data structures
2800
x537
187C
Weak Memory
dfs and similar
,
dsu
2000
x1362
187B
AlgoRace
dp
,
shortest paths
1800
x1985
185E
Soap Time! - 2
binary search
,
data structures
3000
x143
185D
Visit of the Great
math
,
number theory
2600
x443
185C
Clever Fat Rat
dp
2500
x138
185B
Mushroom Scientists
math
,
ternary search
1800
x1642
183E
Candy Shop
greedy
2900
x138
183D
T-shirt
dp
,
greedy
,
probabilities
2700
x403
183C
Cyclic Coloring
dfs and similar
2200
x621
183B
Zoo
brute force
,
geometry
1700
x698
183A
Headquarters
constructive algorithms
,
math
1700
x550
182E
Wooden Fence
dp
1800
x1463
182C
Optimal Sum
data structures
,
greedy
2000
x742
182A
Battlefield
geometry
,
graphs
,
implementation
,
shortest paths
2200
x287
180E
Cubes
binary search
,
dp
,
two pointers
1800
x1786
180D
Name
greedy
,
strings
1900
x732
180B
Divisibility Rules
math
,
number theory
2300
x348
180A
Defragmentation
implementation
1800
x541
178F3
Representative Sampling
2500
x434
178F2
Representative Sampling
dp
,
sortings
,
strings
2200
x351
178F1
Representative Sampling
1800
x404
178E3
The Beaver's Problem - 2
2300
x201
178E2
The Beaver's Problem - 2
2000
x230
178E1
The Beaver's Problem - 2
1900
x289
178D3
Magic Squares
2100
x250
178D2
Magic Squares
1900
x273
178C3
Smart Beaver and Resolving Collisions
2000
x324
178C2
Smart Beaver and Resolving Collisions
1900
x307
178C1
Smart Beaver and Resolving Collisions
1600
x492
178B3
Greedy Merchants
1800
x1229
178B2
Greedy Merchants
1600
x682
178B1
Greedy Merchants
1600
x764
177G2
Fibonacci Strings
matrices
,
strings
2600
x204
177G1
Fibonacci Strings
strings
2400
x189
177F2
Script Generation
2300
x210
177F1
Script Generation
1800
x305
177E2
Space Voyage
binary search
1900
x433
177E1
Space Voyage
binary search
1700
x617
176E
Archaeology
data structures
,
dfs and similar
,
trees
3100
x1193
176D
Hyper String
dp
2500
x327
176C
Playing with Superglue
combinatorics
,
constructive algorithms
2000
x482
176B
Word Cut
dp
1700
x1834
175F
Gnomes of Might and Magic
data structures
,
graphs
,
implementation
,
shortest paths
3000
x66
175E
Power Defence
brute force
,
dp
,
geometry
,
greedy
2600
x266
175D
Plane of Tanks: Duel
brute force
,
dp
,
math
,
probabilities
2400
x297
175C
Geometry Horse
greedy
,
implementation
,
sortings
,
two pointers
1600
x1319
174C
Range Increments
data structures
,
greedy
1800
x1100
173E
Camping Groups
data structures
,
sortings
2600
x564
173D
Deputies
constructive algorithms
,
graphs
,
greedy
,
implementation
2500
x250
173C
Spiral Maximum
brute force
,
dp
1900
x989
173B
Chamber of Secrets
dfs and similar
,
shortest paths
1800
x3165
172E
BHTML+BCSS
*special problem
,
dfs and similar
,
expression parsing
2200
x271
171H
A polyline
*special problem
,
implementation
1700
x282
171G
Mysterious numbers - 2
*special problem
1600
x932
171F
ucyhf
*special problem
,
brute force
,
implementation
,
number theory
1600
x1284
171E
MYSTERIOUS LANGUAGE
*special problem
2000
x1466
171C
A Piece of Cake
*special problem
,
implementation
2000
x1095
168B
Wizards and Minimal Spell
implementation
,
strings
1700
x1222
167E
Wizards and Bets
dfs and similar
,
graphs
,
math
,
matrices
2900
x580
167D
Wizards and Roads
data structures
,
divide and conquer
,
graph matchings
,
graphs
,
greedy
3000
x197
167C
Wizards and Numbers
games
,
math
2300
x673
167B
Wizards and Huge Prize
dp
,
math
,
probabilities
1800
x2168
167A
Wizards and Trolleybuses
implementation
,
math
1600
x2044
166D
Shoe Store
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
2500
x363
166B
Polygons
geometry
,
sortings
2100
x2463
165E
Compatible Numbers
bitmasks
,
brute force
,
dfs and similar
,
dp
2200
x6982
165D
Beard Graph
data structures
,
dsu
,
trees
2100
x1669
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