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Rayan
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Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
09:00:54
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Before contest
2024-2025 ICPC Asia Jakarta Regional Contest (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
23:30:54
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→ Filter Problems
Difficulty:
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greedy
combine-tags-by-or
*combine tags by OR
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
#
Name
1293B
JOE is on TV!
combinatorics
,
greedy
,
math
1000
x21318
1292E
Rin and The Unknown Flower
constructive algorithms
,
greedy
,
interactive
,
math
3500
x373
1292D
Chaotic V.
dp
,
graphs
,
greedy
,
math
,
number theory
,
trees
2700
x824
1292C
Xenon's Attack on the Gangs
combinatorics
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x2088
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6415
1291B
Array Sharpening
greedy
,
implementation
1300
x14225
1291A
Even But Not Even
greedy
,
math
,
strings
900
x19641
1287A
Angry Students
greedy
,
implementation
800
x20697
1286B
Numbers on Tree
constructive algorithms
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1800
x4759
1286A
Garland
dp
,
greedy
,
sortings
1800
x8884
1285D
Dr. Evil Underscores
bitmasks
,
brute force
,
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
strings
,
trees
1900
x7844
1285B
Just Eat It!
dp
,
greedy
,
implementation
1300
x23136
1283F
DIY Garland
constructive algorithms
,
greedy
,
trees
2200
x1884
1283E
New Year Parties
dp
,
greedy
1800
x6626
1283D
Christmas Trees
graphs
,
greedy
,
shortest paths
1800
x7870
1282C
Petya and Exam
greedy
,
sortings
,
two pointers
1800
x4336
1282B2
K for the Price of One (Hard Version)
dp
,
greedy
,
sortings
1600
x10285
1282B1
K for the Price of One (Easy Version)
dp
,
greedy
,
sortings
1400
x11565
1281B
Azamon Web Services
greedy
1600
x8333
1280D
Miss Punyverse
dp
,
greedy
,
trees
2500
x1019
1280C
Jeremy Bearimy
dfs and similar
,
graphs
,
greedy
,
trees
2000
x2733
1278C
Berry Jam
data structures
,
dp
,
greedy
,
implementation
1700
x8105
1278B
A and B
greedy
,
math
1500
x13403
1277B
Make Them Odd
greedy
,
number theory
1200
x15321
1276C
Beautiful Rectangle
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
greedy
,
math
2300
x1677
1276A
As Simple as One and Two
dp
,
greedy
1400
x12386
1272B
Snow Walking Robot
constructive algorithms
,
greedy
,
implementation
1200
x13965
1272A
Three Friends
brute force
,
greedy
,
math
,
sortings
900
x20793
1271D
Portals
data structures
,
dp
,
greedy
,
implementation
,
sortings
2100
x3120
1271C
Shawarma Tent
brute force
,
geometry
,
greedy
,
implementation
1300
x10624
1271B
Blocks
greedy
,
math
1300
x11416
1271A
Suits
brute force
,
greedy
,
math
800
x15006
1270B
Interesting Subarray
constructive algorithms
,
greedy
,
math
1200
x16462
1270A
Card Game
games
,
greedy
,
math
800
x17042
1268B
Domino for Young
dp
,
greedy
,
math
2000
x6008
1268A
Long Beautiful Integer
constructive algorithms
,
greedy
,
implementation
,
strings
1700
x8688
1267J
Just Arrange the Icons
greedy
,
implementation
,
math
1800
x2879
1267E
Elections
greedy
1700
x3311
1266E
Spaceship Solitaire
data structures
,
greedy
,
implementation
2100
x2255
1266D
Decreasing Debts
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
two pointers
2000
x3656
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9733
1265A
Beautiful String
constructive algorithms
,
greedy
1000
x15173
1264B
Beautiful Sequence
brute force
,
constructive algorithms
,
greedy
1900
x5834
1264A
Beautiful Regional Contest
greedy
,
implementation
1500
x10126
1263B
PIN Codes
greedy
,
implementation
1400
x11405
1260E
Tournament
brute force
,
dp
,
greedy
2400
x1748
1260D
A Game with Traps
binary search
,
dp
,
greedy
,
sortings
1900
x3873
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x8275
1257G
Divisor Set
divide and conquer
,
fft
,
greedy
,
math
,
number theory
2600
x620
1257E
The Contest
data structures
,
dp
,
greedy
2000
x4271
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7626
1257C
Dominated Subarray
greedy
,
implementation
,
sortings
,
strings
,
two pointers
1200
x16078
1257A
Two Rival Students
greedy
,
math
800
x20774
1256E
Yet Another Division Into Teams
dp
,
greedy
,
sortings
2000
x4178
1256D
Binary String Minimizing
greedy
1500
x12146
1256C
Platforms Jumping
greedy
1700
x6933
1256B
Minimize the Permutation
greedy
1400
x13145
1254B2
Send Boxes to Alice (Hard Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
2100
x3207
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4697
1254A
Feeding Chicken
constructive algorithms
,
greedy
,
implementation
1700
x5260
1253E
Antenna Coverage
data structures
,
dp
,
greedy
,
sortings
2200
x2865
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x9342
1253C
Sweets Eating
dp
,
greedy
,
math
,
sortings
1500
x14388
1253B
Silly Mistake
greedy
,
implementation
1400
x11233
1252H
Twin Buildings
greedy
,
implementation
1800
x2691
1252E
Songwriter
greedy
,
two pointers
2200
x1253
1251E2
Voting (Hard Version)
binary search
,
data structures
,
greedy
2400
x2699
1251E1
Voting (Easy Version)
data structures
,
dp
,
greedy
2300
x2372
1251D
Salary Changing
binary search
,
greedy
,
sortings
1900
x6065
1251C
Minimize The Integer
greedy
,
two pointers
1600
x12547
1251B
Binary Palindromes
greedy
,
strings
1400
x11034
1250N
Wires
dfs and similar
,
graphs
,
greedy
2000
x1594
1250L
Divide The Students
binary search
,
greedy
,
math
1500
x4136
1250J
The Parade
binary search
,
greedy
1800
x2970
1250I
Show Must Go On
binary search
,
brute force
,
greedy
,
shortest paths
3100
x135
1250G
Discarding Game
dp
,
greedy
,
two pointers
2300
x728
1250B
The Feast and the Bus
brute force
,
constructive algorithms
,
greedy
,
math
1800
x2619
1249D2
Too Many Segments (hard version)
data structures
,
greedy
,
sortings
1800
x5317
1249D1
Too Many Segments (easy version)
greedy
1800
x5142
1249C2
Good Numbers (hard version)
binary search
,
greedy
,
math
,
meet-in-the-middle
1500
x12725
1249C1
Good Numbers (easy version)
brute force
,
greedy
,
implementation
1300
x15652
1248D1
The World Is Just a Programming Task (Easy Version)
brute force
,
dp
,
greedy
,
implementation
2000
x2407
1248B
Grow The Tree
greedy
,
math
,
sortings
900
x16973
1245D
Shichikuji and Power Grid
dsu
,
graphs
,
greedy
,
shortest paths
,
trees
1900
x7702
1245B
Restricted RPS
constructive algorithms
,
dp
,
greedy
1200
x13889
1244G
Running in Pairs
constructive algorithms
,
greedy
,
math
2400
x1366
1244E
Minimizing Difference
binary search
,
constructive algorithms
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x5261
1239C
Queue in the Train
data structures
,
greedy
,
implementation
2300
x1560
1238G
Adilbek and the Watering System
data structures
,
greedy
,
sortings
2700
x410
1238C
Standard Free2play
dp
,
greedy
,
math
1600
x7451
1238B
Kill `Em All
greedy
,
sortings
1300
x13693
1237G
Balanced Distribution
data structures
,
dp
,
greedy
3500
x123
1237C2
Balanced Removals (Harder)
binary search
,
constructive algorithms
,
divide and conquer
,
greedy
,
implementation
,
sortings
1900
x4358
1237C1
Balanced Removals (Easier)
constructive algorithms
,
geometry
,
greedy
1700
x6115
1236D
Alice and the Doll
brute force
,
data structures
,
greedy
,
implementation
2300
x1679
1236C
Labs
constructive algorithms
,
greedy
,
implementation
1300
x10181
1236A
Stones
brute force
,
greedy
,
math
800
x16506
1231E
Middle-Out
constructive algorithms
,
greedy
,
strings
2200
x844
1231C
Increasing Matrix
greedy
1100
x3882
1230B
Ania and Minimizing
greedy
,
implementation
1000
x18793
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