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Before contest
Codeforces Round #956 (Div. 2) and ByteRace 2024
16:55:36
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*has extra registration
→ Filter Problems
Difficulty:
—
two pointers
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
1989D
Smithing Skill
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
,
two pointers
1900
x4074
1986D
Mathematical Problem
brute force
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1400
x11915
1982C
Boring Day
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1200
x13851
1979E
Manhattan Triangle
binary search
,
constructive algorithms
,
data structures
,
geometry
,
implementation
,
two pointers
2400
x1153
1978F
Large Graph
data structures
,
dfs and similar
,
dsu
,
graphs
,
number theory
,
two pointers
2400
x1011
1976D
Invertible Bracket Sequences
binary search
,
combinatorics
,
data structures
,
divide and conquer
,
implementation
,
two pointers
2000
x3478
1976C
Job Interview
binary search
,
dp
,
greedy
,
implementation
,
two pointers
1600
x8797
1974F
Cutting Game
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x3104
1973B
Cat, Fox and the Lonely Array
binary search
,
bitmasks
,
data structures
,
greedy
,
math
,
two pointers
1300
x12521
1972A
Contest Proposal
brute force
,
greedy
,
two pointers
800
x21170
1968B
Prefiquence
greedy
,
two pointers
800
x25855
1967D
Long Way to be Non-decreasing
binary search
,
dfs and similar
,
graphs
,
implementation
,
shortest paths
,
two pointers
2800
x537
1955D
Inaccurate Subsequence Search
data structures
,
two pointers
1400
x14023
1949J
Amanda the Amoeba
graphs
,
implementation
,
trees
,
two pointers
2600
x347
1948D
Tandem Repeats?
brute force
,
strings
,
two pointers
1700
x8677
1943E2
MEX Game 2 (Hard Version)
binary search
,
greedy
,
two pointers
3300
x272
1941F
Rudolf and Imbalance
binary search
,
greedy
,
sortings
,
two pointers
1800
x5513
1941E
Rudolf and k Bridges
binary search
,
data structures
,
dp
,
two pointers
1600
x8762
1939C
More Gifts
*special problem
,
dfs and similar
,
two pointers
x284
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x452
1936B
Pinball
binary search
,
data structures
,
implementation
,
math
,
two pointers
2000
x2586
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x14627
1928B
Equalize
binary search
,
greedy
,
sortings
,
two pointers
1200
x16137
1927E
Klever Permutation
constructive algorithms
,
math
,
two pointers
1400
x13079
1927D
Find the Different Ones!
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
two pointers
1300
x19429
1923D
Slimes
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
1800
x6248
1921D
Very Different Array
data structures
,
greedy
,
sortings
,
two pointers
1100
x20647
1918D
Blocking Elements
binary search
,
data structures
,
dp
,
implementation
,
two pointers
1900
x4452
1912I
Innovative Washing Machine
geometry
,
math
,
two pointers
3300
x55
1905D
Cyclic MEX
data structures
,
implementation
,
math
,
two pointers
2000
x3626
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x11487
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1100
x13853
1901F
Landscaping
binary search
,
geometry
,
two pointers
2900
x147
1899G
Unusual Entertainment
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
sortings
,
trees
,
two pointers
1900
x3002
1899C
Yarik and Array
dp
,
greedy
,
two pointers
1100
x19268
1898E
Sofia and Strings
data structures
,
greedy
,
sortings
,
strings
,
two pointers
2200
x2130
1896D
Ones and Twos
binary search
,
data structures
,
divide and conquer
,
math
,
two pointers
1700
x5408
1896B
AB Flipping
greedy
,
strings
,
two pointers
900
x13982
1895E
Infinite Card Game
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
games
,
graphs
,
greedy
,
sortings
,
two pointers
2300
x1501
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x8344
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x12041
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x841
1887C
Minimum Array
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
two pointers
2400
x1628
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1374
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x12159
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x5074
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x9887
1876D
Lexichromatography
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
two pointers
2500
x835
1873F
Money Trees
binary search
,
greedy
,
math
,
two pointers
1300
x14603
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x33791
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x11071
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x686
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2658
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2741
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4272
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x3081
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x28660
1849E
Max to the Right of Min
binary search
,
data structures
,
divide and conquer
,
dp
,
dsu
,
two pointers
2300
x1561
1849D
Array Painting
constructive algorithms
,
greedy
,
two pointers
1700
x8093
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x19532
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7518
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x11532
1843B
Long Long
greedy
,
math
,
two pointers
800
x28431
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x33522
1841F
Monocarp and a Strategic Game
geometry
,
sortings
,
two pointers
2700
x479
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x4232
1840C
Ski Resort
combinatorics
,
math
,
two pointers
1000
x25836
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x33290
1835B
Lottery
binary search
,
brute force
,
greedy
,
math
,
two pointers
2500
x921
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x6998
1832B
Maximum Sum
brute force
,
sortings
,
two pointers
1100
x20536
1827B1
Range Sorting (Easy Version)
binary search
,
dp
,
dsu
,
greedy
,
trees
,
two pointers
2000
x3742
1827A
Counting Orders
combinatorics
,
math
,
sortings
,
two pointers
1100
x18092
1820B
JoJo's Incredible Adventures
math
,
strings
,
two pointers
1100
x13912
1819D
Misha and Apples
brute force
,
data structures
,
dp
,
two pointers
2800
x609
1819B
The Butcher
geometry
,
greedy
,
implementation
,
sortings
,
two pointers
1900
x3488
1814D
Balancing Weapons
binary search
,
brute force
,
data structures
,
math
,
two pointers
2500
x834
1811G2
Vlad and the Nice Paths (hard version)
binary search
,
combinatorics
,
data structures
,
dp
,
math
,
two pointers
2200
x1683
1808D
Petya, Petya, Petr, and Palindromes
binary search
,
brute force
,
data structures
,
two pointers
2100
x2241
1805F2
Survival of the Weakest (hard version)
greedy
,
math
,
sortings
,
two pointers
3100
x335
1805E
There Should Be a Lot of Maximums
brute force
,
data structures
,
dfs and similar
,
dp
,
trees
,
two pointers
2300
x1555
1797E
Li Hua and Array
brute force
,
data structures
,
dsu
,
math
,
number theory
,
two pointers
2300
x1221
1796D
Maximum Subarray
data structures
,
dp
,
greedy
,
two pointers
2000
x4102
1794C
Scoring Subsequences
binary search
,
greedy
,
math
,
two pointers
1300
x12984
1793E
Velepin and Marketing
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2600
x951
1793D
Moscow Gorillas
binary search
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1800
x5921
1793C
Dora and Search
constructive algorithms
,
data structures
,
two pointers
1200
x18969
1792C
Min Max Sort
binary search
,
brute force
,
greedy
,
math
,
two pointers
1500
x13633
1791C
Prepend and Append
implementation
,
two pointers
800
x42342
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x15953
1788D
Moving Dots
binary search
,
brute force
,
combinatorics
,
math
,
two pointers
2000
x3791
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x149
1781E
Rectangle Shrinking
binary search
,
brute force
,
data structures
,
greedy
,
implementation
,
two pointers
2300
x1282
1777C
Quiz Master
binary search
,
math
,
number theory
,
sortings
,
two pointers
1700
x8113
1776H
Beppa and SwerChat
two pointers
1300
x6162
1774D
Same Count One
brute force
,
constructive algorithms
,
greedy
,
implementation
,
two pointers
1600
x7620
1772G
Gaining Rating
binary search
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
2200
x1297
1771E
Hossam and a Letter
brute force
,
dp
,
implementation
,
two pointers
2500
x670
1771B
Hossam and Friends
binary search
,
constructive algorithms
,
dp
,
two pointers
1400
x13528
1766E
Decomposition
binary search
,
brute force
,
data structures
,
divide and conquer
,
dp
,
two pointers
2300
x1155
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