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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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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
2038N
Fixing the Expression
implementation
800
x6127
2038J
Waiting for...
greedy
,
implementation
800
x4638
2037C
Superultra's Favorite Permutation
constructive algorithms
,
greedy
,
math
,
number theory
1000
x15055
2037B
Intercepted Inputs
brute force
,
implementation
800
x17411
2037A
Twice
implementation
800
x22515
2036C
Anya and 1100
brute force
,
implementation
1100
x16270
2036B
Startup
greedy
,
sortings
800
x22851
2036A
Quintomania
implementation
800
x30328
2035B
Everyone Loves Tres
constructive algorithms
,
greedy
,
math
,
number theory
900
x14607
2035A
Sliding
implementation
,
math
800
x14798
2033B
Sakurako and Water
brute force
,
constructive algorithms
,
greedy
900
x22872
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x32790
2032B
Medians
constructive algorithms
,
greedy
,
implementation
,
math
1100
x15479
2032A
Circuit
greedy
,
implementation
,
math
,
number theory
800
x20211
2031B
Penchick and Satay Sticks
brute force
,
greedy
,
sortings
900
x13374
2031A
Penchick and Modern Monument
constructive algorithms
,
dp
,
greedy
,
math
800
x14591
2030C
A TRUE Battle
brute force
,
games
,
greedy
1100
x15715
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x20017
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x23371
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x8185
2029A
Set
greedy
,
math
800
x10897
2028A
Alice's Adventures in ''Chess''
brute force
,
implementation
,
math
900
x13736
2027B
Stalin Sort
brute force
,
greedy
1100
x13561
2027A
Rectangle Arrangement
geometry
,
implementation
,
math
800
x18485
2026A
Perpendicular Segments
constructive algorithms
,
geometry
,
greedy
,
math
900
x15874
2025B
Binomial Coefficients, Kind Of
combinatorics
,
dp
,
math
1100
x16403
2025A
Two Screens
binary search
,
greedy
,
strings
,
two pointers
800
x23430
2024B
Buying Lemonade
binary search
,
constructive algorithms
,
sortings
1100
x13092
2024A
Profitable Interest Rate
greedy
,
math
800
x18783
2022A
Bus to Pénjamo
constructive algorithms
,
greedy
,
implementation
,
math
800
x13720
2021B
Maximize Mex
brute force
,
greedy
,
math
,
number theory
1200
x14285
2021A
Meaning Mean
data structures
,
greedy
,
math
,
sortings
800
x18553
2020B
Brightness Begins
binary search
,
math
1200
x16361
2020A
Find Minimum Operations
bitmasks
,
brute force
,
greedy
,
math
,
number theory
800
x21851
2019B
All Pairs Segments
implementation
,
math
1200
x13827
2019A
Max Plus Size
brute force
,
dp
,
greedy
800
x22817
2014C
Robin Hood in Town
binary search
,
greedy
,
math
1100
x21534
2014B
Robin Hood and the Major Oak
math
800
x28229
2014A
Robin Helps
greedy
,
implementation
800
x36991
2013B
Battle for Survive
constructive algorithms
,
greedy
,
math
900
x22948
2013A
Zhan's Blender
constructive algorithms
,
math
800
x27089
2010B
Three Brothers
brute force
,
implementation
,
math
800
x19862
2010A
Alternating Sum of Numbers
brute force
,
implementation
,
math
800
x16785
2009C
The Legend of Freya the Frog
implementation
,
math
1100
x25883
2009B
osu!mania
brute force
,
implementation
800
x41808
2009A
Minimize!
brute force
,
math
800
x51491
2008D
Sakurako's Hobby
dp
,
dsu
,
graphs
,
math
1100
x19135
2008C
Longest Good Array
binary search
,
brute force
,
math
800
x30334
2008B
Square or Not
brute force
,
math
,
strings
800
x28503
2008A
Sakurako's Exam
brute force
,
constructive algorithms
,
greedy
,
math
800
x35189
2007B
Index and Maximum Value
data structures
,
greedy
900
x21183
2007A
Dora's Set
greedy
,
math
,
number theory
800
x22639
2005B2
The Strict Teacher (Hard Version)
binary search
,
greedy
,
math
,
sortings
1200
x17266
2005B1
The Strict Teacher (Easy Version)
greedy
,
math
,
sortings
1000
x19969
2005A
Simple Palindrome
combinatorics
,
constructive algorithms
,
greedy
,
math
900
x21654
2004C
Splitting Items
games
,
greedy
,
sortings
1100
x23309
2004B
Game with Doors
brute force
,
greedy
1000
x26081
2004A
Closest Point
implementation
,
math
800
x30284
2003C
Turtle and Good Pairs
constructive algorithms
,
greedy
,
sortings
,
strings
1200
x18131
2003B
Turtle and Piggy Are Playing a Game 2
games
,
greedy
,
sortings
800
x25119
2003A
Turtle and Good Strings
greedy
,
strings
800
x28944
2002C
Black Circles
brute force
,
geometry
,
greedy
,
math
1200
x15063
2002B
Removals Game
constructive algorithms
,
games
1000
x18854
2002A
Distanced Coloring
constructive algorithms
,
implementation
,
math
800
x19453
2001B
Generate Permutation
constructive algorithms
800
x24017
2001A
Make All Equal
greedy
,
implementation
800
x29561
2000D
Right Left Wrong
greedy
,
implementation
,
two pointers
1200
x23048
2000C
Numeric String Template
data structures
,
strings
1000
x25426
2000B
Seating in a Bus
two pointers
800
x33812
2000A
Primary Task
implementation
,
math
,
strings
800
x37358
1999D
Slavic's Exam
greedy
,
implementation
,
strings
1100
x27028
1999C
Showering
greedy
,
implementation
800
x35125
1999B
Card Game
brute force
,
constructive algorithms
,
implementation
1000
x32479
1999A
A+B Again?
implementation
,
math
800
x56259
1998B
Minimize Equal Sum Subarrays
constructive algorithms
,
math
,
number theory
1000
x23829
1998A
Find K Distinct Points with Fixed Center
constructive algorithms
,
implementation
,
math
800
x23958
1997C
Even Positions
constructive algorithms
,
data structures
,
greedy
1100
x22039
1997B
Make Three Regions
constructive algorithms
,
two pointers
1100
x20655
1997A
Strong Password
brute force
,
implementation
,
strings
800
x29262
1996C
Sort
dp
,
greedy
,
sortings
,
strings
1200
x22965
1996B
Scale
greedy
,
implementation
800
x32618
1996A
Legs
binary search
,
math
,
ternary search
800
x43351
1995B1
Bouquet (Easy Version)
binary search
,
brute force
,
greedy
,
sortings
,
two pointers
1100
x18019
1995A
Diagonals
brute force
,
greedy
,
implementation
,
math
800
x24259
1994B
Fun Game
bitmasks
,
constructive algorithms
,
greedy
,
math
1100
x16578
1994A
Diverse Game
constructive algorithms
,
greedy
,
implementation
800
x20266
1993B
Parity and Sum
constructive algorithms
,
greedy
1100
x22780
1993A
Question Marks
greedy
,
implementation
800
x29446
1992D
Test of Love
dp
,
greedy
,
implementation
1200
x20464
1992C
Gorilla and Permutation
constructive algorithms
,
math
900
x29175
1992B
Angry Monk
greedy
,
math
,
sortings
800
x34334
1992A
Only Pluses
brute force
,
constructive algorithms
,
greedy
,
math
,
sortings
800
x41425
1991B
AND Reconstruction
bitmasks
,
constructive algorithms
,
greedy
1100
x16408
1991A
Maximize the Last Element
greedy
,
implementation
800
x21887
1990B
Array Craft
constructive algorithms
,
greedy
1200
x16562
1990A
Submission Bait
brute force
,
games
,
greedy
,
sortings
900
x22763
1989B
Substring and Subsequence
brute force
,
greedy
,
strings
1200
x20223
1989A
Catch the Coin
implementation
800
x26419
1988B
Make Majority
greedy
,
implementation
900
x22832
1988A
Split the Multiset
brute force
,
greedy
,
implementation
,
math
900
x23299
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