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Rayan
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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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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
1823B
Sort with Step
brute force
,
math
,
sortings
900
x16152
1823A
A-characteristic
combinatorics
,
constructive algorithms
,
math
800
x16228
1822D
Super-Permutation
constructive algorithms
,
math
1200
x16946
1822C
Bun Lover
math
800
x23166
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24943
1822A
TubeTube Feed
brute force
,
implementation
800
x24443
1821B
Sort the Subarray
brute force
,
greedy
1100
x19001
1821A
Matching
combinatorics
,
math
800
x19974
1820B
JoJo's Incredible Adventures
math
,
strings
,
two pointers
1100
x15070
1820A
Yura's New Name
implementation
,
strings
800
x16792
1818B
Indivisible
constructive algorithms
900
x15144
1818A
Politics
greedy
,
implementation
800
x13037
1816B
Grid Reconstruction
constructive algorithms
,
greedy
1000
x15398
1816A
Ian Visits Mary
constructive algorithms
,
geometry
,
number theory
800
x17681
1814A
Coins
implementation
,
math
800
x29900
1811C
Restore the Array
constructive algorithms
,
greedy
1100
x20107
1811B
Conveyor Belts
implementation
,
math
1000
x20543
1811A
Insert Digit
greedy
,
math
,
strings
800
x31345
1810B
Candies
constructive algorithms
,
math
,
number theory
800
x17653
1810A
Beautiful Sequence
brute force
,
greedy
800
x20844
1809B
Points on Plane
binary search
,
greedy
,
math
1000
x20139
1809A
Garland
implementation
800
x24067
1808B
Playing in a Casino
math
,
sortings
1200
x17473
1808A
Lucky Numbers
brute force
,
implementation
900
x18447
1807G2
Subsequence Addition (Hard Version)
bitmasks
,
dp
,
greedy
,
implementation
,
sortings
1100
x19740
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x19319
1807D
Odd Queries
data structures
,
implementation
900
x34147
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x30852
1807B
Grab the Candies
greedy
800
x42664
1807A
Plus or Minus
implementation
800
x64107
1806B
Mex Master
constructive algorithms
,
greedy
900
x17941
1806A
Walking Master
geometry
,
greedy
,
math
800
x25648
1805B
The String Has a Target
greedy
,
strings
800
x18725
1805A
We Need the Zero
bitmasks
,
brute force
800
x24305
1804B
Vaccination
greedy
,
implementation
1000
x14335
1804A
Lame King
greedy
,
math
800
x18014
1802B
Settlement of Guinea Pigs
greedy
,
implementation
,
math
1000
x13434
1802A
Likes
greedy
,
implementation
800
x15944
1800D
Remove Two Letters
data structures
,
greedy
,
hashing
,
strings
1200
x24097
1800C2
Powering the Hero (hard version)
data structures
,
greedy
1100
x22962
1800C1
Powering the Hero (easy version)
data structures
,
greedy
1000
x23995
1800B
Count the Number of Pairs
greedy
,
strings
1000
x25441
1800A
Is It a Cat?
implementation
,
strings
800
x31850
1799B
Equalize by Divide
brute force
,
constructive algorithms
,
greedy
,
math
1200
x11458
1799A
Recent Actions
data structures
,
greedy
,
implementation
,
math
800
x11642
1798B
Three Sevens
brute force
,
data structures
,
greedy
,
implementation
1000
x16797
1798A
Showstopper
greedy
,
implementation
,
sortings
800
x19958
1797B
Li Hua and Pattern
constructive algorithms
,
greedy
1100
x16372
1797A
Li Hua and Maze
constructive algorithms
,
flows
,
graphs
,
greedy
,
implementation
800
x17603
1796B
Asterisk-Minor Template
implementation
,
strings
1000
x16656
1796A
Typical Interview Problem
brute force
,
implementation
,
strings
800
x18905
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x22198
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23706
1794B
Not Dividing
constructive algorithms
,
greedy
,
math
900
x23188
1794A
Prefix and Suffix Array
strings
800
x17252
1793C
Dora and Search
constructive algorithms
,
data structures
,
two pointers
1200
x21031
1793B
Fedya and Array
constructive algorithms
,
math
1100
x15930
1793A
Yet Another Promotion
greedy
,
math
800
x18125
1792B
Stand-up Comedian
greedy
,
math
1200
x21619
1792A
GamingForces
greedy
,
sortings
800
x28358
1791G1
Teleporters (Easy Version)
greedy
,
sortings
1100
x23278
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x29166
1791D
Distinct Split
brute force
,
greedy
,
strings
1000
x31594
1791C
Prepend and Append
implementation
,
two pointers
800
x46957
1791B
Following Directions
geometry
,
implementation
800
x45081
1791A
Codeforces Checking
implementation
,
strings
800
x62283
1790D
Matryoshkas
data structures
,
greedy
,
sortings
1200
x20784
1790C
Premutation
brute force
,
implementation
,
math
1000
x24216
1790B
Taisia and Dice
greedy
,
greedy
,
math
800
x27585
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x37401
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x16290
1789A
Serval and Mocha's Array
brute force
,
math
,
number theory
800
x19611
1788B
Sum of Two Numbers
constructive algorithms
,
greedy
,
implementation
,
math
,
probabilities
1100
x20228
1788A
One and Two
brute force
,
implementation
,
math
800
x31801
1787B
Number Factorization
greedy
,
math
,
number theory
1100
x13382
1787A
Exponential Equation
constructive algorithms
,
math
800
x19285
1786A2
Alternating Deck (hard version)
implementation
800
x11468
1786A1
Non-alternating Deck (easy version)
implementation
800
x14100
1784A
Monsters (easy version)
brute force
,
greedy
1000
x15283
1783B
Matrix of Differences
constructive algorithms
,
math
1100
x17869
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x30987
1781B
Going to the Cinema
brute force
,
greedy
,
sortings
1000
x13592
1781A
Parallel Projection
geometry
,
math
800
x15149
1780B
GCD Partition
brute force
,
greedy
,
math
,
number theory
1100
x18466
1780A
Hayato and School
constructive algorithms
,
greedy
800
x21788
1779B
MKnez's ConstructiveForces Task
constructive algorithms
,
math
900
x23721
1779A
Hall of Fame
constructive algorithms
,
greedy
,
strings
800
x23223
1778A
Flip Flop Sum
greedy
,
implementation
800
x24498
1777B
Emordnilap
combinatorics
,
greedy
,
math
900
x17646
1777A
Everybody Likes Good Arrays!
greedy
,
math
800
x25183
1776A
Walking Boy
greedy
800
x7052
1775A2
Gardener and the Capybaras (hard version)
constructive algorithms
,
greedy
900
x18854
1775A1
Gardener and the Capybaras (easy version)
brute force
,
constructive algorithms
,
implementation
800
x19742
1774A
Add Plus Minus Sign
constructive algorithms
,
math
800
x22527
1773F
Football
constructive algorithms
800
x4196
1772C
Different Differences
constructive algorithms
,
greedy
,
math
1000
x24006
1772B
Matrix Rotation
brute force
,
implementation
800
x29481
1772A
A+B?
implementation
800
x48984
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x23122
1770B
Koxia and Permutation
constructive algorithms
1000
x19483
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