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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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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
258C
Little Elephant and LCM
binary search
,
combinatorics
,
dp
,
math
2000
x1796
258B
Little Elephant and Elections
brute force
,
combinatorics
,
dp
1900
x1453
258A
Little Elephant and Bits
greedy
,
math
1100
x23113
257E
Greedy Elevator
data structures
,
implementation
2200
x294
257D
Sum
greedy
,
math
1900
x1610
257C
View Angle
brute force
,
geometry
,
math
1800
x4389
257B
Playing Cubes
games
,
greedy
,
implementation
1300
x7128
257A
Sockets
greedy
,
implementation
,
sortings
1100
x6498
256E
Lucky Arrays
data structures
2400
x668
256D
Liars and Serge
dp
2700
x256
255E
Furlo and Rublo and Game
games
,
implementation
,
math
2200
x871
255D
Mr. Bender and Square
binary search
,
implementation
,
math
1800
x2012
255C
Almost Arithmetical Progression
brute force
,
dp
1500
x4733
255B
Code Parsing
implementation
1200
x4996
255A
Greg's Workout
implementation
800
x28989
254E
Dormitory
dp
,
implementation
2100
x678
254D
Rats
brute force
,
dfs and similar
,
graphs
,
implementation
,
shortest paths
2300
x563
254C
Anagram
greedy
,
strings
1800
x1501
254B
Jury Size
brute force
,
implementation
1500
x2161
254A
Cards with Numbers
constructive algorithms
,
sortings
1200
x7111
253E
Printer
binary search
,
data structures
,
implementation
,
sortings
2200
x532
253D
Table with Letters - 2
brute force
,
two pointers
2000
x848
253C
Text Editor
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x2616
253B
Physics Practical
binary search
,
dp
,
sortings
,
two pointers
1400
x10819
253A
Boys and Girls
greedy
1100
x11296
252B
Unsorting Array
brute force
,
sortings
1800
x1721
252A
Little Xor
brute force
,
implementation
1100
x5330
251E
Tree and Table
dfs and similar
,
dp
,
implementation
,
trees
3000
x172
251D
Two Sets
bitmasks
,
math
2700
x479
251C
Number Transformation
dp
,
greedy
,
number theory
2000
x1038
251B
Playing with Permutations
implementation
,
math
1800
x1276
251A
Points on Line
binary search
,
combinatorics
,
two pointers
1300
x17898
250E
Mad Joe
brute force
2000
x469
250D
Building Bridge
geometry
,
ternary search
,
two pointers
1900
x895
250C
Movie Critics
greedy
1600
x1951
250B
Restoring IPv6
implementation
,
strings
1500
x1997
250A
Paper Work
greedy
1000
x4146
249E
Endless Matrix
math
2600
x320
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x462
248E
Piglet's Birthday
dp
,
math
,
probabilities
2600
x584
248D
Sweets for Everyone!
binary search
,
greedy
,
implementation
2300
x500
248C
Robo-Footballer
binary search
,
geometry
2000
x855
248B
Chilly Willy
math
,
number theory
1400
x5347
248A
Cupboards
implementation
800
x22569
246E
Blood Cousins Return
binary search
,
data structures
,
dfs and similar
,
dp
,
sortings
2400
x3375
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x9488
246C
Beauty Pageant
brute force
,
constructive algorithms
,
greedy
1600
x2636
246B
Increase and Decrease
greedy
,
math
1300
x11363
246A
Buggy Sorting
constructive algorithms
,
greedy
,
sortings
900
x9311
245H
Queries for Number of Palindromes
dp
,
hashing
,
strings
1800
x6851
245G
Suggested Friends
brute force
,
graphs
2200
x439
245F
Log Stream Analysis
binary search
,
brute force
,
implementation
,
strings
2000
x878
245E
Mishap in Club
greedy
,
implementation
1400
x3298
245D
Restoring Table
constructive algorithms
,
greedy
1500
x2325
245C
Game with Coins
greedy
1700
x1552
245B
Internet Address
implementation
,
strings
1100
x5242
245A
System Administrator
implementation
800
x8499
244B
Undoubtedly Lucky Numbers
bitmasks
,
brute force
,
dfs and similar
1600
x4515
244A
Dividing Orange
implementation
900
x7965
243E
Matrix
data structures
3000
x192
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x215
243C
Colorado Potato Beetle
dfs and similar
,
implementation
2200
x530
243B
Hydra
graphs
,
sortings
2000
x1236
243A
The Brand New Function
bitmasks
1600
x3952
242E
XOR on Segment
bitmasks
,
data structures
2000
x9438
242D
Dispute
dfs and similar
,
graphs
,
greedy
2100
x1881
242C
King's Path
dfs and similar
,
graphs
,
hashing
,
shortest paths
1800
x8775
242B
Big Segment
implementation
,
sortings
1100
x15856
242A
Heads or Tails
brute force
,
implementation
1100
x6393
241G
Challenging Balloons
constructive algorithms
1900
x549
241F
Race
brute force
,
implementation
2300
x263
241E
Flights
graphs
,
shortest paths
2600
x1113
241D
Numbers
2900
x381
241C
Mirror Box
geometry
,
implementation
2000
x512
241B
Friends
binary search
,
bitmasks
,
data structures
,
math
2700
x818
241A
Old Peykan
greedy
1300
x2244
240F
TorCoder
data structures
2600
x1970
240E
Road Repairs
dfs and similar
,
graphs
,
greedy
2800
x357
239B
Easy Tape Programming
brute force
,
implementation
1500
x1375
239A
Two Bags of Potatoes
greedy
,
implementation
,
math
1200
x19041
238E
Meeting Her
dp
,
graphs
,
shortest paths
2600
x394
238D
Tape Programming
data structures
,
implementation
2900
x251
238C
World Eater Brothers
dfs and similar
,
dp
,
greedy
,
trees
2100
x1247
238B
Boring Partition
constructive algorithms
1800
x1333
238A
Not Wool Sequences
constructive algorithms
,
math
1300
x2049
237E
Build String
flows
,
graphs
2000
x1742
237D
T-decomposition
dfs and similar
,
graphs
,
greedy
,
trees
2000
x568
237C
Primes on Interval
binary search
,
number theory
,
two pointers
1600
x5841
237B
Young Table
implementation
,
sortings
1500
x2241
237A
Free Cash
implementation
1000
x26972
236B
Easy Number Challenge
implementation
,
number theory
1300
x14440
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x215424
235E
Number Challenge
combinatorics
,
dp
,
implementation
,
math
,
number theory
2600
x779
235D
Graph Game
graphs
3000
x507
235C
Cyclical Quest
data structures
,
string suffix structures
,
strings
2700
x2151
235B
Let's Play Osu!
dp
,
math
,
probabilities
2000
x3593
235A
LCM Challenge
number theory
1600
x17975
234H
Merging Two Decks
constructive algorithms
,
greedy
2000
x568
234G
Practice
constructive algorithms
,
divide and conquer
,
implementation
1600
x1480
234F
Fence
dp
1800
x1749
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