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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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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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Status
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Custom test
Problems
#
Name
1200B
Block Adventure
dp
,
greedy
1200
x14019
1200A
Hotelier
brute force
,
data structures
,
implementation
800
x20495
1199B
Water Lily
geometry
,
math
1000
x20717
1199A
City Day
implementation
1000
x14965
1197B
Pillars
greedy
,
implementation
1000
x13911
1197A
DIY Wooden Ladder
greedy
,
math
,
sortings
900
x13583
1196B
Odd Sum Segments
constructive algorithms
,
math
1200
x16701
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x27840
1195B
Sport Mafia
binary search
,
brute force
,
math
1000
x19984
1195A
Drinks Choosing
greedy
,
math
1000
x13172
1194A
Remove a Progression
math
800
x16380
1191B
Tokitsukaze and Mahjong
brute force
,
implementation
1200
x9619
1191A
Tokitsukaze and Enhancement
brute force
800
x18210
1189B
Number Circle
greedy
,
math
,
sortings
1100
x14340
1189A
Keanu Reeves
strings
800
x15331
1187A
Stickers and Toys
math
900
x14913
1186A
Vus the Cossack and a Contest
implementation
800
x37903
1185C1
Exam in BerSU (easy version)
greedy
,
sortings
1200
x11442
1185B
Email from Polycarp
implementation
,
strings
1200
x13446
1185A
Ropewalkers
math
800
x14936
1184A1
Heidi Learns Hashing (Easy)
brute force
,
math
,
number theory
1200
x5998
1183B
Equalize Prices
math
900
x18571
1183A
Nearest Interesting Number
implementation
800
x25110
1182A
Filling Shapes
dp
,
math
1000
x31466
1181A
Chunga-Changa
greedy
,
math
1000
x13704
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x25433
1178A
Prime Minister
greedy
800
x10470
1177A
Digits Sequence (Easy Edition)
implementation
1000
x5781
1176B
Merge it!
math
1100
x17223
1176A
Divide it!
brute force
,
greedy
,
implementation
800
x23054
1175A
From Hero to Zero
implementation
,
math
900
x18338
1174B
Ehab Is an Odd Person
sortings
1200
x15589
1174A
Ehab Fails to Be Thanos
constructive algorithms
,
greedy
,
sortings
1000
x17784
1173B
Nauuo and Chess
constructive algorithms
,
greedy
1100
x9092
1173A
Nauuo and Votes
greedy
800
x16271
1169A
Circle Metro
implementation
,
math
900
x11995
1167A
Telephone Number
brute force
,
greedy
,
strings
800
x19398
1166B
All the Vowels Please
constructive algorithms
,
math
,
number theory
1100
x11509
1166A
Silent Classroom
combinatorics
,
greedy
900
x14363
1165B
Polycarp Training
data structures
,
greedy
,
sortings
1000
x21354
1165A
Remainder
implementation
,
math
1100
x13850
1163A
Eating Soup
greedy
,
math
900
x13041
1162A
Zoning Restrictions Again
implementation
800
x8300
1159A
A pile of stones
implementation
,
math
800
x12724
1157A
Reachable Numbers
implementation
1100
x15735
1155B
Game with Telephone Numbers
games
,
greedy
,
implementation
1200
x11936
1155A
Reverse a Substring
implementation
,
sortings
,
strings
1000
x15410
1154B
Make Them Equal
math
1200
x16718
1154A
Restoring Three Numbers
math
800
x72141
1153B
Serval and Toy Bricks
constructive algorithms
,
greedy
1200
x9094
1153A
Serval and Bus
brute force
,
math
1000
x11538
1152A
Neko Finds Grapes
greedy
,
implementation
,
math
800
x15349
1151A
Maxim and Biology
brute force
,
strings
1000
x11246
1150B
Tiling Challenge
greedy
,
implementation
900
x11335
1150A
Stock Arbitraging
greedy
,
implementation
800
x11883
1149A
Prefix Sum Primes
constructive algorithms
,
greedy
,
math
,
number theory
1200
x15308
1148A
Another One Bites The Dust
greedy
800
x14944
1146B
Hate "A"
implementation
,
strings
1100
x8634
1146A
Love "A"
implementation
,
strings
800
x22036
1144C
Two Shuffled Sequences
constructive algorithms
,
sortings
1000
x15451
1144B
Parity Alternated Deletions
greedy
,
implementation
,
sortings
900
x17167
1144A
Diverse Strings
implementation
,
strings
800
x19383
1143B
Nirvana
brute force
,
math
,
number theory
1200
x10584
1143A
The Doors
implementation
800
x13294
1141B
Maximal Continuous Rest
implementation
900
x21473
1141A
Game 23
implementation
,
math
1000
x32348
1140D
Minimum Triangulation
dp
,
greedy
,
math
1200
x12680
1140B
Good String
implementation
,
strings
1200
x11365
1140A
Detective Book
implementation
1000
x12359
1139B
Chocolates
greedy
,
implementation
1000
x16538
1139A
Even Substrings
implementation
,
strings
800
x16837
1138A
Sushi for Two
binary search
,
greedy
,
implementation
900
x18595
1136B
Nastya Is Playing Computer Games
constructive algorithms
,
math
1000
x11754
1136A
Nastya Is Reading a Book
implementation
800
x16450
1133C
Balanced Team
sortings
,
two pointers
1200
x23481
1133B
Preparation for International Women's Day
math
,
number theory
1200
x12981
1133A
Middle of the Contest
implementation
1000
x17624
1132B
Discounts
greedy
,
sortings
900
x13098
1132A
Regular Bracket Sequence
greedy
,
implementation
1100
x9639
1131C
Birthday
binary search
,
greedy
,
sortings
1200
x14899
1131A
Sea Battle
math
800
x12464
1130B
Two Cakes
greedy
1200
x7938
1130A
Be Positive
implementation
800
x11667
1121B
Mike and Children
brute force
,
implementation
1200
x9108
1121A
Technogoblet of Fire
implementation
,
sortings
1100
x7203
1119A
Ilya and a Colorful Walk
greedy
,
implementation
1100
x10865
1118B
Tanya and Candies
implementation
1200
x12260
1118A
Water Buying
math
800
x20222
1117B
Emotes
greedy
,
math
,
sortings
1000
x14494
1117A
Best Subsegment
implementation
,
math
1100
x11046
1115G1
AND oracle
*special problem
1100
x389
1114A
Got Any Grapes?
brute force
,
greedy
,
implementation
800
x18816
1113A
Sasha and His Trip
dp
,
greedy
,
math
900
x17384
1111A
Superhero Transformation
implementation
,
strings
1000
x16917
1110A
Parity
math
900
x15126
1108B
Divisors of Two Integers
brute force
,
greedy
,
math
,
number theory
1100
x23335
1108A
Two distinct points
implementation
800
x21939
1107B
Digital root
math
,
number theory
1000
x16083
1107A
Digits Sequence Dividing
greedy
,
strings
900
x12082
1106C
Lunar New Year and Number Division
greedy
,
implementation
,
math
,
sortings
900
x14741
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