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→ Filter Problems
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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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Problems
#
Name
1255A
Changing Volume
math
800
x17301
1253A
Single Push
implementation
1000
x18112
1252A
Copying Homework
1000
x5663
1251A
Broken Keyboard
brute force
,
strings
,
two pointers
1000
x19764
1250F
Data Center
brute force
,
implementation
800
x7488
1249B1
Books Exchange (easy version)
dsu
,
math
1000
x20805
1249A
Yet Another Dividing into Teams
math
800
x22561
1248B
Grow The Tree
greedy
,
math
,
sortings
900
x16960
1248A
Integer Points
geometry
,
math
1000
x14188
1245A
Good ol' Numbers Coloring
math
,
number theory
1000
x14272
1244B
Rooms and Staircases
brute force
,
implementation
1000
x15927
1244A
Pens and Pencils
math
800
x19312
1243B1
Character Swap (Easy Version)
strings
1000
x14938
1243A
Maximum Square
implementation
800
x15726
1238A
Prime Subtraction
math
,
number theory
900
x24564
1237A
Balanced Rating Changes
implementation
,
math
1000
x20076
1236A
Stones
brute force
,
greedy
,
math
800
x16487
1234B1
Social Network (easy version)
implementation
1000
x18829
1234A
Equalize Prices Again
math
800
x27938
1230B
Ania and Minimizing
greedy
,
implementation
1000
x18779
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x21721
1228A
Distinct Digits
brute force
,
implementation
800
x21868
1225B1
TV Subscriptions (Easy Version)
implementation
1000
x11945
1225A
Forgetting Things
math
900
x15863
1223B
Strings Equalization
strings
1000
x14985
1223A
CME
math
800
x21662
1221A
2048 Game
brute force
,
greedy
,
math
1000
x17008
1220A
Cards
implementation
,
sortings
,
strings
800
x30003
1216B
Shooting
greedy
,
implementation
,
sortings
900
x18519
1216A
Prefixes
strings
800
x18743
1215A
Yellow Cards
greedy
,
implementation
,
math
1000
x11595
1213A
Chips Moving
math
900
x24169
1211A
Three Problems
*special problem
,
implementation
1000
x1425
1209A
Paint the Numbers
greedy
,
implementation
,
math
800
x12253
1208A
XORinacci
math
900
x16887
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x21979
1206B
Make Product Equal One
dp
,
implementation
900
x27062
1206A
Choose Two Numbers
math
,
sortings
800
x24545
1204B
Mislove Has Lost an Array
greedy
,
math
900
x17568
1204A
BowWow and the Timetable
math
1000
x21013
1203A
Circle of Students
implementation
1000
x16742
1201A
Important Exam
implementation
,
strings
900
x15772
1200A
Hotelier
brute force
,
data structures
,
implementation
800
x20488
1199B
Water Lily
geometry
,
math
1000
x20709
1199A
City Day
implementation
1000
x14962
1197B
Pillars
greedy
,
implementation
1000
x13902
1197A
DIY Wooden Ladder
greedy
,
math
,
sortings
900
x13582
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x27832
1195B
Sport Mafia
binary search
,
brute force
,
math
1000
x19977
1195A
Drinks Choosing
greedy
,
math
1000
x13168
1194A
Remove a Progression
math
800
x16376
1191A
Tokitsukaze and Enhancement
brute force
800
x18206
1189A
Keanu Reeves
strings
800
x15331
1187A
Stickers and Toys
math
900
x14911
1186A
Vus the Cossack and a Contest
implementation
800
x37881
1185A
Ropewalkers
math
800
x14933
1183B
Equalize Prices
math
900
x18568
1183A
Nearest Interesting Number
implementation
800
x25104
1182A
Filling Shapes
dp
,
math
1000
x31454
1181A
Chunga-Changa
greedy
,
math
1000
x13700
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x25428
1178A
Prime Minister
greedy
800
x10470
1177A
Digits Sequence (Easy Edition)
implementation
1000
x5780
1176A
Divide it!
brute force
,
greedy
,
implementation
800
x23043
1175A
From Hero to Zero
implementation
,
math
900
x18332
1174A
Ehab Fails to Be Thanos
constructive algorithms
,
greedy
,
sortings
1000
x17782
1173A
Nauuo and Votes
greedy
800
x16268
1169A
Circle Metro
implementation
,
math
900
x11992
1167A
Telephone Number
brute force
,
greedy
,
strings
800
x19390
1166A
Silent Classroom
combinatorics
,
greedy
900
x14360
1165B
Polycarp Training
data structures
,
greedy
,
sortings
1000
x21347
1163A
Eating Soup
greedy
,
math
900
x13039
1162A
Zoning Restrictions Again
implementation
800
x8299
1159A
A pile of stones
implementation
,
math
800
x12722
1155A
Reverse a Substring
implementation
,
sortings
,
strings
1000
x15400
1154A
Restoring Three Numbers
math
800
x72097
1153A
Serval and Bus
brute force
,
math
1000
x11524
1152A
Neko Finds Grapes
greedy
,
implementation
,
math
800
x15346
1151A
Maxim and Biology
brute force
,
strings
1000
x11244
1150B
Tiling Challenge
greedy
,
implementation
900
x11334
1150A
Stock Arbitraging
greedy
,
implementation
800
x11880
1148A
Another One Bites The Dust
greedy
800
x14941
1146A
Love "A"
implementation
,
strings
800
x22029
1144C
Two Shuffled Sequences
constructive algorithms
,
sortings
1000
x15451
1144B
Parity Alternated Deletions
greedy
,
implementation
,
sortings
900
x17164
1144A
Diverse Strings
implementation
,
strings
800
x19376
1143A
The Doors
implementation
800
x13292
1141B
Maximal Continuous Rest
implementation
900
x21468
1141A
Game 23
implementation
,
math
1000
x32337
1140A
Detective Book
implementation
1000
x12358
1139B
Chocolates
greedy
,
implementation
1000
x16531
1139A
Even Substrings
implementation
,
strings
800
x16834
1138A
Sushi for Two
binary search
,
greedy
,
implementation
900
x18587
1136B
Nastya Is Playing Computer Games
constructive algorithms
,
math
1000
x11751
1136A
Nastya Is Reading a Book
implementation
800
x16448
1133A
Middle of the Contest
implementation
1000
x17617
1132B
Discounts
greedy
,
sortings
900
x13097
1131A
Sea Battle
math
800
x12464
1130A
Be Positive
implementation
800
x11662
1118A
Water Buying
math
800
x20217
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