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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
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matrices
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number theory
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Problems
#
Name
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x198609
160A
Twins
greedy
,
sortings
900
x110989
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94600
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77976
230A
Dragons
greedy
,
sortings
1000
x74419
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71233
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70888
1399A
Remove Smallest
greedy
,
sortings
800
x62830
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56704
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55600
1760A
Medium Number
implementation
,
sortings
800
x53910
1850A
To My Critics
implementation
,
sortings
800
x51192
34B
Sale
greedy
,
sortings
900
x48724
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47582
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46598
1360B
Honest Coach
greedy
,
sortings
800
x46110
456A
Laptops
sortings
1100
x45492
1676B
Equal Candies
greedy
,
math
,
sortings
800
x45233
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44525
451B
Sort the Array
implementation
,
sortings
1300
x43079
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40453
1669B
Triple
implementation
,
sortings
800
x39955
459B
Pashmak and Flowers
combinatorics
,
implementation
,
sortings
1300
x38495
149A
Business trip
greedy
,
implementation
,
sortings
900
x37759
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x37743
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x36370
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35414
1760C
Advantage
data structures
,
implementation
,
sortings
800
x35082
1335C
Two Teams Composing
binary search
,
greedy
,
implementation
,
sortings
1100
x33297
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x32985
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32867
1692B
All Distinct
greedy
,
sortings
800
x32821
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x32422
977C
Less or Equal
sortings
1200
x32348
1360C
Similar Pairs
constructive algorithms
,
graph matchings
,
greedy
,
sortings
1100
x31706
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31565
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x31147
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29613
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28868
1220A
Cards
implementation
,
sortings
,
strings
800
x28839
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28552
479C
Exams
greedy
,
sortings
1400
x28547
1626A
Equidistant Letters
constructive algorithms
,
sortings
800
x28334
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x28082
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x27484
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x27467
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x27279
1792A
GamingForces
greedy
,
sortings
800
x27132
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x26768
1487A
Arena
implementation
,
sortings
800
x26184
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x26166
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x26082
1092B
Teams Forming
sortings
800
x25652
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x25646
1339B
Sorted Adjacent Differences
constructive algorithms
,
sortings
1200
x25584
1697B
Promo
greedy
,
sortings
900
x25525
1833B
Restore the Weather
greedy
,
sortings
900
x25399
1334B
Middle Class
greedy
,
sortings
1100
x25205
515C
Drazil and Factorial
greedy
,
math
,
sortings
1400
x24973
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x24947
1355B
Young Explorers
dp
,
greedy
,
sortings
1200
x24874
1705A
Mark the Photographer
greedy
,
sortings
800
x24817
1312B
Bogosort
constructive algorithms
,
sortings
1000
x24704
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x24682
1358B
Maria Breaks the Self-isolation
greedy
,
sortings
1000
x24657
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x24547
1041A
Heist
greedy
,
implementation
,
sortings
800
x24527
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24366
1607C
Minimum Extraction
brute force
,
sortings
1000
x24337
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24318
1971A
My First Sorting Problem
implementation
,
sortings
x24313
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x24153
545D
Queue
greedy
,
implementation
,
sortings
1300
x24083
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24082
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24077
276C
Little Girl and Maximum Sum
data structures
,
greedy
,
implementation
,
sortings
1500
x24046
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x23875
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x23866
1955B
Progressive Square
constructive algorithms
,
data structures
,
implementation
,
sortings
1000
x23658
1419D1
Sage's Birthday (easy version)
binary search
,
constructive algorithms
,
greedy
,
sortings
1000
x23614
37A
Towers
sortings
1000
x23591
1552A
Subsequence Permutation
sortings
,
strings
800
x23515
1206A
Choose Two Numbers
math
,
sortings
800
x23501
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x23478
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23445
1873E
Building an Aquarium
binary search
,
sortings
1100
x23033
1857C
Assembly via Minimums
greedy
,
sortings
1200
x22985
1420A
Cubes Sorting
math
,
sortings
900
x22840
1557B
Moamen and k-subarrays
greedy
,
sortings
1100
x22827
1849B
Monsters
greedy
,
math
,
sortings
1000
x22717
1730A
Planets
data structures
,
greedy
,
sortings
800
x22527
285C
Building Permutation
greedy
,
implementation
,
sortings
1200
x22493
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22436
1722D
Line
greedy
,
sortings
1100
x22286
1300B
Assigning to Classes
greedy
,
implementation
,
sortings
1000
x22246
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x22218
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x22105
1637A
Sorting Parts
brute force
,
sortings
800
x22074
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x22053
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x22045
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