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Rayan
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Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
3 days
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*has extra registration
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Difficulty:
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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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Custom test
Problems
#
Name
207C2
Game with Two Trees
2200
x90
207C1
Game with Two Trees
2100
x107
207B3
Military Trainings
1700
x179
207B2
Military Trainings
1900
x196
207B1
Military Trainings
1600
x280
207A3
Beaver's Calculator 1.0
greedy
2000
x217
207A2
Beaver's Calculator 1.0
greedy
1800
x243
207A1
Beaver's Calculator 1.0
greedy
1600
x297
204E
Little Elephant and Strings
data structures
,
implementation
,
string suffix structures
,
two pointers
2800
x1171
204D
Little Elephant and Retro Strings
dp
2400
x585
204C
Little Elephant and Furik and Rubik
math
,
probabilities
2000
x1119
203E
Transportation
greedy
,
sortings
,
two pointers
2300
x281
203D
Hit Ball
geometry
,
implementation
,
math
1700
x1418
202B
Brand New Easy Problem
brute force
1700
x819
201E
Thoroughly Bureaucratic Organization
binary search
,
combinatorics
2600
x427
201D
Brand New Problem
bitmasks
,
brute force
,
dp
2600
x419
201C
Fragile Bridges
dp
2000
x1367
201B
Guess That Car!
math
,
ternary search
1800
x1293
201A
Clear Symmetry
constructive algorithms
,
dp
,
math
1700
x3017
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
x687
199B
Special Olympics
geometry
1900
x805
198E
Gripping Story
binary search
,
data structures
,
sortings
2400
x431
198D
Cube Snake
constructive algorithms
2700
x107
198C
Delivering Carcinogen
binary search
,
geometry
2400
x375
198A
About Bacteria
implementation
,
math
1700
x3158
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6361
196E
Opening Portals
dsu
,
graphs
,
shortest paths
2600
x1030
196D
The Next Good String
data structures
,
greedy
,
hashing
,
strings
2800
x541
196C
Paint Tree
constructive algorithms
,
divide and conquer
,
geometry
,
sortings
,
trees
2200
x960
196B
Infinite Maze
dfs and similar
,
graphs
2000
x2225
195E
Building Forest
data structures
,
dsu
,
graphs
2000
x728
195D
Analyzing Polyline
geometry
,
math
,
sortings
1900
x1046
195C
Try and Catch
expression parsing
,
implementation
1800
x1148
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x343
193D
Two Segments
data structures
2900
x554
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x517
193B
Xor
brute force
2000
x1015
193A
Cutting Figure
constructive algorithms
,
graphs
,
trees
1700
x4017
191E
Thwarting Demonstrations
binary search
,
data structures
,
trees
2200
x857
191D
Metro Scheme
graphs
,
greedy
2700
x365
191C
Fools and Roads
data structures
,
dfs and similar
,
trees
1900
x7309
191B
Demonstration
greedy
1700
x1014
190E
Counter Attack
data structures
,
dsu
,
graphs
,
hashing
,
sortings
2100
x1553
190D
Non-Secret Cypher
two pointers
1900
x2344
190B
Surrounded
geometry
1800
x2858
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
x1363
187B
AlgoRace
dp
,
shortest paths
1800
x1988
185E
Soap Time! - 2
binary search
,
data structures
3000
x143
185D
Visit of the Great
math
,
number theory
2600
x444
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
x1464
182C
Optimal Sum
data structures
,
greedy
2000
x743
182A
Battlefield
geometry
,
graphs
,
implementation
,
shortest paths
2200
x288
180E
Cubes
binary search
,
dp
,
two pointers
1800
x1786
180D
Name
greedy
,
strings
1900
x732
180B
Divisibility Rules
math
,
number theory
2300
x349
180A
Defragmentation
implementation
1800
x541
178F3
Representative Sampling
2500
x435
178F2
Representative Sampling
dp
,
sortings
,
strings
2200
x352
178F1
Representative Sampling
1800
x405
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
x326
178C2
Smart Beaver and Resolving Collisions
1900
x308
178C1
Smart Beaver and Resolving Collisions
1600
x495
178B3
Greedy Merchants
1800
x1233
178B2
Greedy Merchants
1600
x683
178B1
Greedy Merchants
1600
x766
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
x1196
176D
Hyper String
dp
2500
x327
176C
Playing with Superglue
combinatorics
,
constructive algorithms
2000
x482
176B
Word Cut
dp
1700
x1838
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
x1321
174C
Range Increments
data structures
,
greedy
1800
x1133
173E
Camping Groups
data structures
,
sortings
2600
x564
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