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Before contest
Codeforces Round #956 (Div. 2) and ByteRace 2024
39:26:43
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Difficulty:
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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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Custom test
Problems
#
Name
1758E
Tick, Tock
combinatorics
,
dfs and similar
,
dsu
,
graphs
2500
x814
1758D
Range = √Sum
binary search
,
brute force
,
constructive algorithms
,
math
,
two pointers
1800
x7074
1758C
Almost All Multiples
greedy
,
number theory
1400
x13252
1753F
Minecraft Series
brute force
,
two pointers
3500
x194
1753E
N Machines
binary search
,
brute force
,
greedy
3300
x311
1753D
The Beach
constructive algorithms
,
dfs and similar
,
graphs
,
shortest paths
2400
x1691
1753C
Wish I Knew How to Sort
dp
,
math
,
probabilities
2000
x4244
1753B
Factorial Divisibility
math
,
number theory
1600
x12371
1753A2
Make Nonzero Sum (hard version)
constructive algorithms
,
dp
,
greedy
1500
x10019
1750H
BinaryStringForces
constructive algorithms
,
data structures
,
dp
3500
x77
1750G
Doping
combinatorics
,
dp
,
math
3300
x232
1750F
Majority
combinatorics
,
dp
,
math
,
strings
2700
x873
1750E
Bracket Cost
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
,
strings
2400
x1375
1750D
Count GCD
combinatorics
,
math
,
number theory
1800
x5705
1750C
Complementary XOR
constructive algorithms
,
implementation
1400
x9392
1749F
Distance to the Path
data structures
,
dfs and similar
,
trees
2800
x489
1749E
Cactus Wall
constructive algorithms
,
dfs and similar
,
graphs
,
shortest paths
2400
x1645
1749D
Counting Arrays
combinatorics
,
dp
,
math
,
number theory
1900
x5420
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13645
1748F
Circular Xor Reversal
bitmasks
,
constructive algorithms
3000
x328
1748E
Yet Another Array Counting Problem
binary search
,
data structures
,
divide and conquer
,
dp
,
flows
,
math
,
trees
2300
x1771
1748D
ConstructOR
bitmasks
,
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
math
,
number theory
2100
x2710
1748C
Zero-Sum Prefixes
brute force
,
data structures
,
dp
,
greedy
,
implementation
1600
x10752
1748B
Diverse Substrings
brute force
,
implementation
,
strings
1400
x14722
1747E
List Generation
combinatorics
,
dp
,
math
2900
x491
1747D
Yet Another Problem
binary search
,
bitmasks
,
constructive algorithms
,
data structures
1900
x4562
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x91
1746F
Kazaee
data structures
,
hashing
,
probabilities
2800
x1606
1746E2
Joking (Hard Version)
dp
,
interactive
3200
x381
1746E1
Joking (Easy Version)
binary search
,
constructive algorithms
,
interactive
,
ternary search
2500
x1389
1746D
Paths on the Tree
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1900
x4508
1744F
MEX vs MED
math
,
two pointers
2000
x2976
1744E2
Divisible Numbers (hard version)
brute force
,
math
,
number theory
1900
x5421
1744E1
Divisible Numbers (easy version)
brute force
,
math
,
number theory
1500
x10519
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x249
1743F
Intersection and Union
data structures
,
dp
,
matrices
,
probabilities
2300
x1443
1743E
FTL
binary search
,
dp
2400
x1506
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7428
1742G
Orray
bitmasks
,
brute force
,
greedy
,
math
,
sortings
1500
x10258
1742F
Smaller
constructive algorithms
,
greedy
,
strings
1500
x11178
1741G
Kirill and Company
bitmasks
,
brute force
,
dfs and similar
,
dp
,
flows
,
graphs
,
shortest paths
2200
x1452
1741F
Multi-Colored Segments
binary search
,
data structures
,
math
,
sortings
2000
x2278
1741E
Sending a Sequence Over the Network
dp
1600
x11326
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x108
1740H
MEX Tree Manipulation
data structures
,
trees
3300
x207
1740G
Dangerous Laser Power
constructive algorithms
,
dsu
,
sortings
3100
x184
1740F
Conditional Mix
combinatorics
,
dp
,
math
2600
x777
1740E
Hanging Hearts
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
1800
x4201
1740D
Knowledge Cards
constructive algorithms
,
data structures
1500
x7867
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x10762
1739F
Keyboard Design
bitmasks
,
data structures
,
dp
,
string suffix structures
,
strings
2600
x517
1739E
Cleaning Robot
bitmasks
,
dp
2400
x1192
1739D
Reset K Edges
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x4972
1739C
Card Game
combinatorics
,
constructive algorithms
,
dp
,
games
1500
x8861
1738H
Palindrome Addicts
data structures
,
strings
3300
x232
1738G
Anti-Increasing Addicts
constructive algorithms
,
dp
,
greedy
,
math
2900
x416
1738F
Connectivity Addicts
constructive algorithms
,
dsu
,
graphs
,
greedy
,
interactive
,
shortest paths
,
trees
2400
x1194
1738E
Balance Addicts
combinatorics
,
dp
,
math
,
two pointers
2300
x1490
1738D
Permutation Addicts
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
1900
x3382
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x10877
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x111
1737F
Ela and Prime GCD
constructive algorithms
,
math
,
number theory
3300
x122
1737E
Ela Goes Hiking
combinatorics
,
dp
,
math
,
probabilities
2500
x908
1737D
Ela and the Wiring Wizard
brute force
,
dp
,
graphs
,
greedy
,
implementation
,
shortest paths
2200
x1821
1737C
Ela and Crickets
constructive algorithms
,
games
,
implementation
,
math
1500
x5636
1736E
Swap and Take
dp
,
greedy
2600
x669
1736D
Equal Binary Subsequences
constructive algorithms
,
geometry
,
greedy
,
implementation
,
strings
2200
x2423
1736C2
Good Subarrays (Hard Version)
binary search
,
data structures
,
dp
,
two pointers
2400
x1260
1735F
Pebbles and Beads
data structures
,
geometry
2900
x219
1735E
House Planning
constructive algorithms
,
data structures
,
graph matchings
,
greedy
2400
x1032
1735D
Meta-set
brute force
,
combinatorics
,
data structures
,
hashing
,
math
1700
x5382
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9693
1734F
Zeros and Ones
bitmasks
,
divide and conquer
,
dp
,
math
2500
x778
1734E
Rectangular Congruence
constructive algorithms
,
number theory
2100
x2827
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x6147
1733E
Conveyor
constructive algorithms
,
dp
,
math
2700
x1112
1733D2
Zero-One (Hard Version)
dp
,
greedy
2000
x4067
1733D1
Zero-One (Easy Version)
constructive algorithms
,
greedy
,
math
1400
x13122
1732E
Location
data structures
,
dp
,
math
,
number theory
2800
x419
1732D2
Balance (Hard version)
brute force
,
data structures
,
number theory
2400
x1381
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8458
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2493
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5690
1731F
Function Sum
brute force
,
combinatorics
,
dp
,
fft
,
math
2500
x671
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2725
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6905
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x9197
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x425
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x619
1730D
Prefixes and Suffixes
constructive algorithms
,
strings
,
two pointers
2200
x2617
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x12210
1729G
Cut Substrings
combinatorics
,
dp
,
hashing
,
strings
,
two pointers
2100
x2106
1729F
Kirei and the Linear Function
hashing
,
math
1900
x4069
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6854
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x435
1728F
Fishermen
flows
,
graph matchings
,
greedy
3100
x415
1728E
Red-Black Pepper
brute force
,
data structures
,
greedy
,
math
,
number theory
2300
x1678
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x7002
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x15557
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x82
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