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Rayan
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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
5 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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Problems
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Status
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Custom test
Problems
#
Name
1097C
Yuhao and a Parenthesis
greedy
,
implementation
1400
x8454
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x29232
1097A
Gennady and a Card Game
brute force
,
implementation
800
x39172
1096G
Lucky Tickets
divide and conquer
,
dp
,
fft
2400
x1509
1096F
Inversion Expectation
dp
,
math
,
probabilities
2300
x1813
1096E
The Top Scorer
combinatorics
,
dp
,
math
,
probabilities
2500
x1025
1096D
Easy Problem
dp
1800
x8186
1096C
Polygon for the Angle
brute force
,
geometry
1600
x6837
1096B
Substring Removal
combinatorics
,
math
,
strings
1300
x10648
1096A
Find Divisible
greedy
,
implementation
,
math
800
x18821
1095F
Make It Connected
dsu
,
graphs
,
greedy
1900
x6255
1095E
Almost Regular Bracket Sequence
implementation
1900
x4139
1095D
Circular Dance
implementation
1600
x7588
1095C
Powers Of Two
bitmasks
,
greedy
1400
x17024
1095B
Array Stabilization
implementation
900
x22222
1095A
Repeating Cipher
implementation
800
x31981
1093G
Multidimensional Queries
bitmasks
,
data structures
2300
x1931
1093F
Vasya and Array
dp
2400
x1021
1093E
Intersection of Permutations
data structures
2400
x1650
1093D
Beautiful Graph
dfs and similar
,
graphs
1700
x9322
1093C
Mishka and the Last Exam
greedy
1300
x9363
1093B
Letters Rearranging
constructive algorithms
,
greedy
,
sortings
,
strings
900
x16617
1093A
Dice Rolling
math
800
x17749
1092F
Tree with Maximum Cost
dfs and similar
,
dp
,
trees
1900
x8302
1092E
Minimal Diameter Forest
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2000
x1760
1092D2
Great Vova Wall (Version 2)
data structures
,
implementation
2200
x3018
1092D1
Great Vova Wall (Version 1)
greedy
,
implementation
,
math
2200
x4837
1092C
Prefixes and Suffixes
strings
1700
x5956
1092B
Teams Forming
sortings
800
x26623
1092A
Uniform String
implementation
800
x16340
1091H
New Year and the Tricolore Recreation
games
3200
x430
1091G
New Year and the Factorisation Collaboration
interactive
,
math
,
number theory
3200
x209
1091F
New Year and the Mallard Expedition
constructive algorithms
,
greedy
2600
x827
1091E
New Year and the Acquaintance Estimation
binary search
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
sortings
2400
x1013
1091D
New Year and the Permutation Concatenation
combinatorics
,
dp
,
math
1700
x6812
1091C
New Year and the Sphere Transmission
math
,
number theory
1400
x10065
1091B
New Year and the Treasure Geolocation
brute force
,
constructive algorithms
,
greedy
,
implementation
1200
x10693
1091A
New Year and the Christmas Ornament
brute force
,
implementation
,
math
800
x17648
1090M
The Pleasant Walk
implementation
1000
x6364
1090L
Berland University
greedy
,
math
2000
x1290
1090K
Right Expansion Of The Mind
math
2000
x1092
1090J
Two Prefixes
strings
2600
x450
1090I
Minimal Product
2000
x1071
1090H
Linearization
graphs
2900
x99
1090G
Combostone
games
,
implementation
2500
x110
1090F
How to Learn You Score
constructive algorithms
,
interactive
2600
x326
1090E
Horseback Riding
flows
,
graphs
2300
x606
1090D
Similar Arrays
constructive algorithms
1800
x2109
1090C
New Year Presents
constructive algorithms
,
data structures
2400
x504
1090B
LaTeX Expert
1900
x1432
1090A
Company Merging
greedy
1300
x4257
1089M
Minegraphed
constructive algorithms
,
graphs
2400
x603
1089L
Lazyland
900
x4026
1089K
King Kog's Reception
data structures
2400
x1121
1089J
JS Minification
greedy
,
implementation
3200
x133
1089I
Interval-Free Permutations
combinatorics
2600
x382
1089H
Harder Satisfiability
2-sat
,
dfs and similar
,
graphs
3400
x112
1089G
Guest Student
math
1500
x2952
1089F
Fractions
math
1900
x1965
1089E
Easy Chess
constructive algorithms
1700
x1995
1089D
Distance Sum
graphs
3100
x100
1089C
Cactus Search
interactive
2500
x422
1089B
Bimatching
graphs
3200
x228
1089A
Alice the Fan
dp
2200
x1150
1088F
Ehab and a weird weight formula
data structures
,
trees
2800
x519
1088E
Ehab and a component choosing problem
dp
,
greedy
,
math
,
trees
2400
x1494
1088D
Ehab and another another xor problem
bitmasks
,
constructive algorithms
,
implementation
,
interactive
2000
x2876
1088C
Ehab and a 2-operation task
constructive algorithms
,
greedy
,
math
1400
x8087
1088B
Ehab and subtraction
implementation
,
sortings
1000
x12667
1088A
Ehab and another construction problem
brute force
,
constructive algorithms
800
x16901
1086F
Forest Fires
math
3500
x244
1085G
Beautiful Matrix
combinatorics
,
data structures
,
dp
2900
x526
1085F
Rock-Paper-Scissors Champion
2500
x618
1085E
Vasya and Templates
greedy
,
implementation
,
strings
2300
x1066
1085D
Minimum Diameter Tree
constructive algorithms
,
implementation
,
trees
1700
x5454
1085C
Connect Three
implementation
,
math
1600
x5452
1085B
Div Times Mod
math
1100
x9349
1085A
Right-Left Cipher
implementation
,
strings
800
x12200
1084C
The Fair Nut and String
combinatorics
,
dp
,
implementation
1500
x8239
1084B
Kvass and the Fair Nut
greedy
,
implementation
1200
x7835
1084A
The Fair Nut and Elevator
brute force
,
implementation
1000
x7939
1083F
The Fair Nut and Amusing Xor
data structures
3300
x278
1083E
The Fair Nut and Rectangles
data structures
,
dp
,
geometry
2400
x4342
1083D
The Fair Nut's getting crazy
data structures
,
implementation
3500
x239
1083C
Max Mex
data structures
,
trees
2900
x941
1083B
The Fair Nut and Strings
greedy
,
strings
2000
x1961
1083A
The Fair Nut and the Best Path
data structures
,
dp
,
trees
1800
x5494
1082G
Petya and Graph
flows
,
graphs
2400
x2149
1082F
Speed Dial
dp
,
strings
,
trees
2800
x423
1082E
Increasing Frequency
binary search
,
dp
,
greedy
2000
x4677
1082D
Maximum Diameter Graph
constructive algorithms
,
graphs
,
implementation
1800
x3829
1082C
Multi-Subject Competition
greedy
,
sortings
1600
x5785
1082B
Vova and Trophies
greedy
1600
x7595
1082A
Vasya and Book
implementation
,
math
1200
x8624
1081H
Palindromic Magic
data structures
,
hashing
,
strings
3500
x107
1081G
Mergesort Strikes Back
math
,
probabilities
3200
x393
1081F
Tricky Interactor
constructive algorithms
,
implementation
,
interactive
2600
x475
1081E
Missing Numbers
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1900
x2602
1081D
Maximum Distance
dsu
,
graphs
,
shortest paths
,
sortings
1800
x4154
1081C
Colorful Bricks
combinatorics
,
dp
,
math
1500
x7348
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