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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
6 days
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Difficulty:
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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
245E
Mishap in Club
greedy
,
implementation
1400
x3297
245D
Restoring Table
constructive algorithms
,
greedy
1500
x2325
245C
Game with Coins
greedy
1700
x1552
244B
Undoubtedly Lucky Numbers
bitmasks
,
brute force
,
dfs and similar
1600
x4515
243A
The Brand New Function
bitmasks
1600
x3952
242C
King's Path
dfs and similar
,
graphs
,
hashing
,
shortest paths
1800
x8772
239B
Easy Tape Programming
brute force
,
implementation
1500
x1374
238B
Boring Partition
constructive algorithms
1800
x1333
237C
Primes on Interval
binary search
,
number theory
,
two pointers
1600
x5840
237B
Young Table
implementation
,
sortings
1500
x2241
235A
LCM Challenge
number theory
1600
x17971
234G
Practice
constructive algorithms
,
divide and conquer
,
implementation
1600
x1480
234F
Fence
dp
1800
x1749
234E
Champions' League
implementation
1600
x1002
234D
Cinema
implementation
1600
x1541
233B
Non-square Equation
binary search
,
brute force
,
math
1400
x7542
232A
Cycles
binary search
,
constructive algorithms
,
graphs
,
greedy
1600
x2551
231D
Magic Box
brute force
,
geometry
1600
x4109
231C
To Add or Not to Add
binary search
,
sortings
,
two pointers
1600
x8685
231B
Magic, Wizardry and Wonders
constructive algorithms
,
greedy
1500
x3624
229B
Planets
binary search
,
data structures
,
graphs
,
shortest paths
1700
x4728
229A
Shifts
brute force
,
two pointers
1500
x3529
228B
Two Tables
brute force
,
implementation
1400
x3469
226A
Flying Saucer Segments
math
1400
x4012
225C
Barcode
dp
,
matrices
1700
x9217
225B
Well-known Numbers
binary search
,
greedy
,
number theory
1600
x3164
224B
Array
bitmasks
,
implementation
,
two pointers
1500
x7361
223A
Bracket Sequence
data structures
,
expression parsing
,
implementation
1700
x2541
222C
Reducing Fractions
implementation
,
math
,
number theory
,
sortings
1800
x2264
220B
Little Elephant and Array
constructive algorithms
,
data structures
1800
x10412
219D
Choosing Capital for Treeland
dfs and similar
,
dp
,
graphs
,
trees
1700
x9651
219C
Color Stripe
brute force
,
dp
,
greedy
1600
x6679
219B
Special Offer! Super Price 999 Bourles!
implementation
1400
x5833
216D
Spider's Web
binary search
,
sortings
,
two pointers
1700
x1358
216C
Hiring Staff
greedy
1800
x1853
216B
Forming Teams
dfs and similar
,
implementation
1700
x6405
214B
Hometask
brute force
,
constructive algorithms
,
greedy
,
math
1600
x4985
213A
Game
dfs and similar
,
greedy
1700
x1726
212E
IT Restaurants
dfs and similar
,
dp
,
trees
1500
x1770
209A
Multicolored Marbles
dp
,
math
1600
x2376
207D9
The Beaver's Problem - 3
1800
x88
207D7
The Beaver's Problem - 3
1600
x101
207D5
The Beaver's Problem - 3
1600
x147
207D1
The Beaver's Problem - 3
1800
x117
207B3
Military Trainings
1700
x179
207B1
Military Trainings
1600
x280
207A2
Beaver's Calculator 1.0
greedy
1800
x243
207A1
Beaver's Calculator 1.0
greedy
1600
x296
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x6046
204B
Little Elephant and Cards
binary search
,
data structures
1500
x5279
204A
Little Elephant and Interval
binary search
,
combinatorics
,
dp
1500
x5845
203D
Hit Ball
geometry
,
implementation
,
math
1700
x1418
203C
Photographer
greedy
,
sortings
1400
x5702
202B
Brand New Easy Problem
brute force
1700
x819
201B
Guess That Car!
math
,
ternary search
1800
x1293
201A
Clear Symmetry
constructive algorithms
,
dp
,
math
1700
x3017
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x916
200C
Football Championship
brute force
,
implementation
1800
x1060
198B
Jumping on Walls
shortest paths
1400
x4356
198A
About Bacteria
implementation
,
math
1700
x3157
197B
Limit
math
1400
x4645
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6360
195C
Try and Catch
expression parsing
,
implementation
1800
x1145
193A
Cutting Figure
constructive algorithms
,
graphs
,
trees
1700
x4015
191B
Demonstration
greedy
1700
x1013
191A
Dynasty Puzzles
dp
1500
x4039
190C
STL
dfs and similar
1500
x2857
190B
Surrounded
geometry
1800
x2858
188H
Stack
*special problem
,
expression parsing
,
implementation
1800
x266
188G
Array Sorting
*special problem
,
implementation
1600
x334
188F
Binary Notation
*special problem
,
implementation
1400
x301
188E
HQ9+
*special problem
,
implementation
1400
x501
188C
LCM
*special problem
,
implementation
,
math
1400
x454
187B
AlgoRace
dp
,
shortest paths
1800
x1986
187A
Permutations
greedy
1500
x2818
185B
Mushroom Scientists
math
,
ternary search
1800
x1642
183B
Zoo
brute force
,
geometry
1700
x698
183A
Headquarters
constructive algorithms
,
math
1700
x550
182E
Wooden Fence
dp
1800
x1463
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x8107
180E
Cubes
binary search
,
dp
,
two pointers
1800
x1786
180C
Letter
dp
1400
x7477
180A
Defragmentation
implementation
1800
x541
178F1
Representative Sampling
1800
x404
178D1
Magic Squares
1500
x646
178C1
Smart Beaver and Resolving Collisions
1600
x495
178B3
Greedy Merchants
1800
x1233
178B2
Greedy Merchants
1600
x683
178B1
Greedy Merchants
1600
x766
177F1
Script Generation
1800
x305
177E1
Space Voyage
binary search
1700
x617
177D2
Encrypting Messages
data structures
1500
x2007
177C2
Party
brute force
,
dfs and similar
,
dsu
,
graphs
1500
x2583
177C1
Party
dfs and similar
,
dsu
,
graphs
1500
x2589
176B
Word Cut
dp
1700
x1837
175C
Geometry Horse
greedy
,
implementation
,
sortings
,
two pointers
1600
x1321
175B
Plane of Tanks: Pro
implementation
1400
x1428
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2403
174C
Range Increments
data structures
,
greedy
1800
x1102
174B
File List
dp
,
greedy
,
implementation
1400
x2253
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