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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
4 days
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*has extra registration
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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
1498A
GCD Sum
brute force
,
math
800
x23367
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x24568
1496A
Split it!
brute force
,
constructive algorithms
,
greedy
,
strings
900
x21038
1494A
ABC String
bitmasks
,
brute force
,
implementation
900
x20981
1493A
Anti-knapsack
constructive algorithms
,
greedy
800
x19347
1492A
Three swimmers
math
800
x22751
1491A
K-th Largest Value
brute force
,
greedy
,
implementation
800
x18292
1490A
Dense Array
greedy
,
math
800
x31317
1488A
From Zero To Y
*special problem
,
math
900
x1434
1487A
Arena
implementation
,
sortings
800
x26615
1486A
Shifting Stacks
greedy
,
implementation
900
x25535
1482A
Prison Break
math
800
x20514
1481A
Space Navigation
greedy
,
strings
800
x25010
1480B
The Great Hero
greedy
,
implementation
,
sortings
900
x17268
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x25974
1478A
Nezzar and Colorful Balls
brute force
,
greedy
800
x26602
1475B
New Year's Number
brute force
,
dp
,
math
900
x49614
1475A
Odd Divisor
math
,
number theory
900
x62465
1474A
Puzzle From the Future
greedy
800
x22648
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x34026
1472B
Fair Division
dp
,
greedy
,
math
800
x51286
1472A
Cards for Friends
greedy
,
math
800
x42258
1471A
Strange Partition
greedy
,
math
,
number theory
900
x26702
1468N
Waste Sorting
greedy
,
implementation
900
x8261
1468E
Four Segments
greedy
800
x8878
1467A
Wizard of Orz
constructive algorithms
,
greedy
,
math
900
x24412
1466B
Last minute enhancements
dp
,
greedy
800
x22734
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22605
1462C
Unique Number
brute force
,
greedy
,
math
900
x32934
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x27482
1462A
Favorite Sequence
implementation
,
two pointers
800
x42346
1461A
String Generation
constructive algorithms
,
greedy
800
x18606
1459A
Red-Blue Shuffle
math
,
probabilities
800
x17043
1455A
Strange Functions
math
,
number theory
800
x26548
1454B
Unique Bid Auction
implementation
800
x28652
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x40876
1453A
Cancel the Trains
implementation
800
x22700
1452C
Two Brackets
greedy
800
x19694
1452A
Robot Program
math
800
x22190
1451B
Non-Substring Subsequence
dp
,
greedy
,
implementation
,
strings
900
x19360
1451A
Subtract or Divide
greedy
,
math
800
x24336
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x18018
1447A
Add Candies
constructive algorithms
,
math
800
x13844
1445B
Elimination
greedy
,
math
900
x15388
1445A
Array Rearrangment
greedy
,
sortings
800
x19139
1443A
Kids Seating
constructive algorithms
,
math
800
x16254
1440B
Sum of Medians
greedy
,
math
900
x19312
1440A
Buy the String
implementation
,
math
800
x19816
1438A
Specific Tastes of Andre
constructive algorithms
,
implementation
800
x19293
1437A
Marketing Scheme
brute force
,
constructive algorithms
,
greedy
,
math
800
x18040
1436B
Prime Square
constructive algorithms
,
math
900
x20691
1436A
Reorder
math
800
x22744
1433C
Dominant Piranha
constructive algorithms
,
greedy
900
x27141
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x28675
1433A
Boring Apartments
implementation
,
math
800
x53260
1431A
Selling Hamburgers
*special problem
800
x1911
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19431
1430A
Number of Apartments
brute force
,
constructive algorithms
,
math
900
x20949
1428A
Box is Pull
math
800
x16354
1427A
Avoiding Zero
math
,
sortings
900
x17296
1426B
Symmetric Matrix
implementation
900
x20716
1426A
Floor Number
implementation
,
math
800
x48652
1422A
Fence
geometry
,
math
800
x21032
1421A
XORwice
bitmasks
,
greedy
,
math
800
x29431
1420A
Cubes Sorting
math
,
sortings
900
x23553
1419A
Digit Game
games
,
greedy
,
implementation
900
x19632
1417A
Copy-paste
greedy
,
math
800
x18304
1415A
Prison Break
brute force
,
math
800
x15210
1413A
Finding Sasuke
constructive algorithms
,
math
800
x14844
1411A
In-game Chat
implementation
800
x20704
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x67423
1408A
Circle Coloring
constructive algorithms
800
x12517
1406A
Subset Mex
greedy
,
implementation
,
math
900
x21578
1405A
Permutation Forgery
constructive algorithms
800
x21495
1401A
Distance and Axis
constructive algorithms
,
math
900
x27596
1400A
String Similarity
constructive algorithms
,
strings
800
x27085
1399B
Gifts Fixing
greedy
800
x43817
1399A
Remove Smallest
greedy
,
sortings
800
x67605
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24733
1398A
Bad Triangle
geometry
,
math
800
x27721
1397A
Juggling Letters
greedy
,
strings
800
x28756
1393A
Rainbow Dash, Fluttershy and Chess Coloring
greedy
,
math
800
x20557
1392B
Omkar and Infinity Clock
implementation
,
math
800
x18509
1392A
Omkar and Password
greedy
,
math
800
x20810
1391B
Fix You
brute force
,
greedy
,
implementation
800
x27495
1391A
Suborrays
constructive algorithms
,
math
800
x24455
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x42018
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x25017
1385B
Restore the Permutation by Merger
greedy
800
x37366
1385A
Three Pairwise Maximums
math
800
x39497
1382A
Common Subsequence
brute force
800
x26594
1380A
Three Indices
brute force
,
data structures
900
x26395
1374B
Multiply by 2, divide by 6
math
900
x51564
1374A
Required Remainder
math
800
x54535
1373B
01 Game
games
900
x36673
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x32050
1371A
Magical Sticks
math
800
x46490
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x53040
1369A
FashionabLee
geometry
,
math
800
x36783
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x39958
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