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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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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
510A
Fox And Snake
implementation
800
x85154
509F
Progress Monitoring
dp
,
trees
2300
x1080
509E
Pretty Song
math
,
strings
2000
x1802
509D
Restoring Numbers
constructive algorithms
,
math
2200
x760
509C
Sums of Digits
dp
,
greedy
,
implementation
2000
x2102
509B
Painting Pebbles
constructive algorithms
,
greedy
,
implementation
1300
x9653
509A
Maximum in Table
brute force
,
implementation
800
x38694
508E
Arthur and Brackets
dp
,
greedy
2200
x1767
508D
Tanya and Password
dfs and similar
,
graphs
2500
x3450
508C
Anya and Ghosts
constructive algorithms
,
greedy
1600
x4474
508B
Anton and currency you all know
greedy
,
math
,
strings
1300
x22734
508A
Pasha and Pixels
brute force
1100
x7965
507E
Breaking Good
dfs and similar
,
dp
,
graphs
,
shortest paths
2100
x2923
507D
The Maths Lecture
dp
,
implementation
2200
x1840
507C
Guess Your Way Out!
implementation
,
math
,
trees
1700
x4384
507B
Amr and Pins
geometry
,
math
1400
x24838
507A
Amr and Music
greedy
,
implementation
,
sortings
1000
x18558
506E
Mr. Kitayuta's Gift
combinatorics
,
dp
,
matrices
,
strings
3000
x760
506D
Mr. Kitayuta's Colorful Graph
brute force
,
dfs and similar
,
dsu
,
graphs
2400
x2182
505E
Mr. Kitayuta vs. Bamboos
binary search
,
greedy
2900
x1409
505D
Mr. Kitayuta's Technology
dfs and similar
2200
x2545
505C
Mr. Kitayuta, the Treasure Hunter
dfs and similar
,
dp
,
two pointers
1900
x6431
505B
Mr. Kitayuta's Colorful Graph
dfs and similar
,
dp
,
dsu
,
graphs
1400
x13169
505A
Mr. Kitayuta's Gift
brute force
,
implementation
,
strings
1100
x6692
504E
Misha and LCP on Tree
binary search
,
dfs and similar
,
hashing
,
string suffix structures
,
trees
3000
x940
504D
Misha and XOR
bitmasks
2700
x309
501E
Misha and Palindrome Degree
binary search
,
combinatorics
,
implementation
2500
x919
501D
Misha and Permutations Summation
data structures
2000
x2426
501C
Misha and Forest
constructive algorithms
,
data structures
,
greedy
,
sortings
,
trees
1500
x5664
501B
Misha and Changing Handles
data structures
,
dsu
,
strings
1100
x16643
501A
Contest
implementation
900
x22880
500G
New Year Running
number theory
,
trees
3200
x157
500F
New Year Shopping
divide and conquer
,
dp
2700
x743
500E
New Year Domino
data structures
,
dp
,
dsu
2300
x1447
500D
New Year Santa Network
combinatorics
,
dfs and similar
,
graphs
,
trees
1900
x3128
500C
New Year Book Reading
constructive algorithms
,
greedy
,
implementation
,
math
1600
x5829
500B
New Year Permutation
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
1600
x8909
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x53734
499B
Lecture
implementation
,
strings
1000
x39697
499A
Watching a movie
greedy
,
implementation
1000
x13985
498E
Stairs and Lines
dp
,
matrices
2700
x478
498D
Traffic Jams in the Land
data structures
,
dp
,
number theory
2400
x1126
498C
Array and Operations
flows
,
graph matchings
,
number theory
2100
x3498
498B
Name That Tune
dp
,
probabilities
,
two pointers
2400
x1181
498A
Crazy Town
geometry
1700
x6475
497E
Subsequences Return
dp
,
matrices
2900
x285
497D
Gears
brute force
,
geometry
,
math
2900
x231
496E
Distributing Parts
greedy
,
sortings
2100
x1666
496D
Tennis Game
binary search
1900
x3026
496C
Removing Columns
brute force
,
constructive algorithms
,
implementation
1500
x7763
496B
Secret Combination
brute force
,
constructive algorithms
,
implementation
1500
x5937
496A
Minimum Difficulty
brute force
,
implementation
,
math
900
x16492
495B
Modular Equations
math
,
number theory
1600
x7022
495A
Digital Counter
implementation
1100
x8500
494E
Sharti
data structures
,
games
3200
x321
494D
Birthday
data structures
,
dfs and similar
,
dp
,
trees
2700
x530
494C
Helping People
dp
,
probabilities
2600
x869
494B
Obsessive String
dp
,
strings
2000
x2749
494A
Treasure
greedy
1500
x6261
493E
Vasya and Polynomial
math
2800
x485
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x9715
493C
Vasya and Basketball
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1600
x6841
493B
Vasya and Wrestling
implementation
1400
x13384
493A
Vasya and Football
implementation
1300
x6129
492E
Vanya and Field
math
2000
x1633
492D
Vanya and Computer Game
binary search
,
implementation
,
math
,
sortings
1800
x3161
492C
Vanya and Exams
greedy
,
sortings
1400
x14169
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x76661
492A
Vanya and Cubes
implementation
800
x51327
491C
Deciphering
flows
,
graph matchings
2300
x418
491B
New York Hotel
greedy
,
math
2100
x568
491A
Up the hill
constructive algorithms
,
implementation
1000
x2956
490F
Treeland Tour
data structures
,
dfs and similar
,
dp
,
trees
2200
x1730
490E
Restoring Increasing Sequence
binary search
,
brute force
,
greedy
,
implementation
2000
x1604
490D
Chocolate
brute force
,
dfs and similar
,
math
,
meet-in-the-middle
,
number theory
1900
x2144
490C
Hacking Cypher
brute force
,
math
,
number theory
,
strings
1700
x9107
490B
Queue
dsu
,
implementation
1500
x6017
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x60050
489F
Special Matrices
combinatorics
,
dp
2100
x1674
489E
Hiking
binary search
,
dp
2300
x1033
489D
Unbearable Controversy of Being
brute force
,
combinatorics
,
dfs and similar
,
graphs
1700
x6708
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x46604
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x49499
489A
SwapSort
greedy
,
implementation
,
sortings
1200
x10107
488B
Candy Boxes
brute force
,
constructive algorithms
,
math
1900
x2126
488A
Giga Tower
brute force
1100
x14322
487E
Tourists
data structures
,
dfs and similar
,
graphs
,
trees
3200
x2380
487D
Conveyor Belts
data structures
2700
x902
487C
Prefix Product Sequence
constructive algorithms
,
math
,
number theory
2300
x2795
487B
Strip
binary search
,
data structures
,
dp
,
two pointers
2000
x3559
487A
Fight the Monster
binary search
,
brute force
,
implementation
1800
x3774
486E
LIS of Sequence
data structures
,
dp
,
greedy
,
hashing
,
math
2200
x2284
486D
Valid Sets
dfs and similar
,
dp
,
math
,
trees
2100
x4051
486C
Palindrome Transformation
brute force
,
greedy
,
implementation
1700
x11775
486B
OR in Matrix
greedy
,
hashing
,
implementation
1300
x17848
486A
Calculating Function
implementation
,
math
800
x121075
485B
Valuable Resources
brute force
,
greedy
1300
x6540
485A
Factory
implementation
,
math
,
matrices
1400
x8312
484E
Sign on Fence
binary search
,
constructive algorithms
,
data structures
2500
x2348
484D
Kindergarten
data structures
,
dp
,
greedy
2400
x2655
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