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Name
1849D
Array Painting
constructive algorithms
,
greedy
,
two pointers
1700
x7918
1849C
Binary String Copying
binary search
,
brute force
,
data structures
,
hashing
,
strings
1600
x10000
1849B
Monsters
greedy
,
math
,
sortings
1000
x23430
1849A
Morning Sandwich
implementation
,
math
800
x27270
1848F
Vika and Wiki
binary search
,
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
2400
x1473
1848E
Vika and Stone Skipping
brute force
,
implementation
,
math
,
number theory
2600
x752
1848D
Vika and Bonuses
binary search
,
brute force
,
math
,
ternary search
2200
x2534
1848C
Vika and Price Tags
math
,
number theory
1800
x6059
1848B
Vika and the Bridge
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1200
x13780
1848A
Vika and Her Friends
games
,
math
900
x16385
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x865
1847E
Triangle Platinum?
brute force
,
combinatorics
,
implementation
,
interactive
,
math
,
probabilities
2900
x321
1847D
Professor Higashikata
data structures
,
dsu
,
greedy
,
implementation
,
strings
1900
x3639
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12376
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x19333
1847A
The Man who became a God
greedy
,
sortings
800
x21768
1846G
Rudolf and CodeVid-23
bitmasks
,
dp
,
graphs
,
greedy
,
shortest paths
1900
x4141
1846F
Rudolph and Mimic
constructive algorithms
,
implementation
,
interactive
1800
x2948
1846E2
Rudolf and Snowflakes (hard version)
binary search
,
brute force
,
implementation
,
math
1800
x6689
1846E1
Rudolf and Snowflakes (simple version)
brute force
,
implementation
,
math
1300
x15725
1846D
Rudolph and Christmas Tree
constructive algorithms
,
geometry
,
math
1200
x18592
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x18193
1846B
Rudolph and Tic-Tac-Toe
brute force
,
implementation
,
strings
800
x26287
1846A
Rudolph and Cut the Rope
implementation
,
math
800
x31740
1845F
Swimmers in the Pool
dp
,
fft
,
math
,
number theory
2800
x356
1845E
Boxes and Balls
dp
,
implementation
,
math
2500
x1286
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7440
1845C
Strong Password
binary search
,
dp
,
greedy
,
strings
1400
x13548
1845B
Come Together
geometry
,
implementation
,
math
900
x21066
1845A
Forbidden Integer
constructive algorithms
,
implementation
,
math
,
number theory
800
x25186
1844H
Multiple of Three Cycles
combinatorics
,
data structures
,
dp
,
dsu
,
math
3400
x133
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x661
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x372
1844F1
Min Cost Permutation (Easy Version)
brute force
,
constructive algorithms
,
greedy
,
math
2600
x743
1844E
Great Grids
2-sat
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2400
x1698
1844D
Row Major
constructive algorithms
,
greedy
,
math
,
number theory
,
strings
1400
x11802
1844C
Particles
dp
,
greedy
,
implementation
,
math
1300
x15067
1844B
Permutations & Primes
constructive algorithms
,
math
1000
x17638
1844A
Subtraction Game
constructive algorithms
,
games
800
x24069
1843F2
Omsk Metro (hard version)
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
math
,
trees
2300
x1498
1843F1
Omsk Metro (simple version)
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
1800
x5059
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x11337
1843D
Apple Tree
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
1200
x17261
1843C
Sum in Binary Tree
bitmasks
,
combinatorics
,
math
,
trees
800
x31589
1843B
Long Long
greedy
,
math
,
two pointers
800
x28276
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x33266
1842I
Tenzing and Necklace
divide and conquer
,
dp
,
greedy
3500
x110
1842H
Tenzing and Random Real Numbers
bitmasks
,
dp
,
graphs
,
math
,
probabilities
3000
x574
1842G
Tenzing and Random Operations
combinatorics
,
dp
,
math
,
probabilities
2800
x951
1842F
Tenzing and Tree
dfs and similar
,
greedy
,
shortest paths
,
sortings
,
trees
2500
x1257
1842E
Tenzing and Triangle
data structures
,
dp
,
geometry
,
greedy
,
math
2300
x1555
1842D
Tenzing and His Animal Friends
constructive algorithms
,
graphs
,
greedy
1900
x3951
1842C
Tenzing and Balls
dp
1500
x11944
1842B
Tenzing and Books
bitmasks
,
greedy
,
math
1100
x16056
1842A
Tenzing and Tsondu
games
,
math
800
x19561
1841F
Monocarp and a Strategic Game
geometry
,
sortings
,
two pointers
2700
x478
1841E
Fill the Matrix
data structures
,
greedy
,
math
2200
x1914
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x4198
1841C
Ranom Numbers
brute force
,
dp
,
greedy
,
math
,
strings
1800
x7407
1841B
Keep it Beautiful
implementation
1000
x20843
1841A
Game with Board
constructive algorithms
,
games
800
x24370
1840G2
In Search of Truth (Hard Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2500
x906
1840G1
In Search of Truth (Easy Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2200
x2256
1840F
Railguns
brute force
,
dfs and similar
,
dp
,
graphs
2200
x1727
1840E
Character Blocking
data structures
,
hashing
,
implementation
1600
x7664
1840D
Wooden Toy Festival
binary search
,
greedy
,
sortings
1400
x13057
1840C
Ski Resort
combinatorics
,
math
,
two pointers
1000
x25344
1840B
Binary Cafe
bitmasks
,
combinatorics
,
math
1100
x21786
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x33036
1839E
Decreasing Game
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
interactive
2400
x1172
1839D
Ball Sorting
data structures
,
dp
,
sortings
2100
x2206
1839C
Insert Zero and Invert Prefix
constructive algorithms
1300
x11512
1839B
Lamps
greedy
,
sortings
1100
x14636
1839A
The Good Array
greedy
,
implementation
,
math
800
x17174
1838F
Stuck Conveyor
binary search
,
constructive algorithms
,
interactive
3000
x305
1838E
Count Supersequences
combinatorics
,
dp
,
math
2500
x1386
1838D
Bracket Walk
data structures
,
greedy
,
strings
2100
x3109
1838C
No Prime Differences
constructive algorithms
,
math
,
number theory
1400
x13696
1838B
Minimize Permutation Subarrays
constructive algorithms
,
math
1100
x15966
1838A
Blackboard List
constructive algorithms
,
math
800
x21181
1837F
Editorial for Two
binary search
,
data structures
,
greedy
,
implementation
2400
x2092
1837E
Playoff Fixing
combinatorics
,
trees
2200
x2121
1837D
Bracket Coloring
constructive algorithms
,
greedy
1400
x13761
1837C
Best Binary String
constructive algorithms
,
greedy
1000
x21322
1837B
Comparison String
greedy
900
x27259
1837A
Grasshopper on a Line
constructive algorithms
,
math
800
x29946
1836B
Astrophysicists
greedy
,
math
1100
x12379
1836A
Destroyer
implementation
,
sortings
800
x19961
1835F
Good Graph
bitmasks
,
dfs and similar
,
graph matchings
,
graphs
,
implementation
3500
x155
1835E
Old Mobile
combinatorics
,
dp
,
probabilities
3500
x216
1835D
Doctor's Brown Hypothesis
dfs and similar
,
graphs
,
math
,
number theory
2900
x456
1835C
Twin Clusters
bitmasks
,
brute force
,
constructive algorithms
,
math
,
probabilities
2600
x946
1835B
Lottery
binary search
,
brute force
,
greedy
,
math
,
two pointers
2500
x912
1835A
k-th equality
brute force
,
implementation
,
math
1700
x7544
1834F
Typewriter
brute force
,
math
2500
x494
1834E
MEX of LCM
binary search
,
data structures
,
implementation
,
math
,
number theory
2300
x2098
1834D
Survey in Class
brute force
,
data structures
,
greedy
,
implementation
,
sortings
1900
x4425
1834C
Game with Reversing
games
,
greedy
,
math
,
strings
1200
x12802
1834B
Maximum Strength
greedy
,
math
1000
x14712
1834A
Unit Array
greedy
,
math
800
x22103
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Codeforces Round 953 (Div. 2)
15:28:51
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combine-tags-by-or
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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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