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Codeforces Round 946 (Div. 3)
2 days
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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
1739C
Card Game
combinatorics
,
constructive algorithms
,
dp
,
games
1500
x8727
1739B
Array Recovery
constructive algorithms
,
greedy
,
math
1100
x21468
1739A
Immobile Knight
implementation
800
x22326
1738H
Palindrome Addicts
data structures
,
strings
3300
x228
1738G
Anti-Increasing Addicts
constructive algorithms
,
dp
,
greedy
,
math
2900
x370
1738F
Connectivity Addicts
constructive algorithms
,
dsu
,
graphs
,
greedy
,
interactive
,
shortest paths
,
trees
2400
x1157
1738E
Balance Addicts
combinatorics
,
dp
,
math
,
two pointers
2300
x1457
1738D
Permutation Addicts
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
1900
x3331
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x10595
1738B
Prefix Sum Addicts
constructive algorithms
,
greedy
,
math
,
sortings
1200
x14853
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13349
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x108
1737F
Ela and Prime GCD
constructive algorithms
,
math
,
number theory
3300
x117
1737E
Ela Goes Hiking
combinatorics
,
dp
,
math
,
probabilities
2500
x893
1737D
Ela and the Wiring Wizard
brute force
,
dp
,
graphs
,
greedy
,
implementation
,
shortest paths
2200
x1813
1737C
Ela and Crickets
constructive algorithms
,
games
,
implementation
,
math
1500
x5567
1737B
Ela's Fitness and the Luxury Number
binary search
,
implementation
,
math
1300
x9199
1737A
Ela Sorting Books
greedy
,
implementation
,
strings
900
x9961
1736E
Swap and Take
dp
,
greedy
2600
x644
1736D
Equal Binary Subsequences
constructive algorithms
,
geometry
,
greedy
,
implementation
,
strings
2200
x2403
1736C2
Good Subarrays (Hard Version)
binary search
,
data structures
,
dp
,
two pointers
2400
x1242
1736C1
Good Subarrays (Easy Version)
binary search
,
data structures
,
schedules
,
two pointers
1300
x14552
1736B
Playing with GCD
math
,
number theory
1200
x17294
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22458
1735F
Pebbles and Beads
data structures
,
geometry
2900
x218
1735E
House Planning
constructive algorithms
,
data structures
,
graph matchings
,
greedy
2400
x1023
1735D
Meta-set
brute force
,
combinatorics
,
data structures
,
hashing
,
math
1700
x5296
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9593
1735B
Tea with Tangerines
greedy
,
math
900
x17739
1735A
Working Week
constructive algorithms
,
greedy
,
math
800
x19901
1734F
Zeros and Ones
bitmasks
,
divide and conquer
,
dp
,
math
2500
x770
1734E
Rectangular Congruence
constructive algorithms
,
number theory
2100
x2767
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x6042
1734C
Removing Smallest Multiples
greedy
,
math
1200
x16961
1734B
Bright, Nice, Brilliant
constructive algorithms
800
x15588
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20777
1733E
Conveyor
constructive algorithms
,
dp
,
math
2700
x1095
1733D2
Zero-One (Hard Version)
dp
,
greedy
2000
x3999
1733D1
Zero-One (Easy Version)
constructive algorithms
,
greedy
,
math
1400
x12938
1733C
Parity Shuffle Sorting
constructive algorithms
,
sortings
1300
x15136
1733B
Rule of League
constructive algorithms
,
math
900
x19307
1733A
Consecutive Sum
greedy
,
sortings
800
x20676
1732E
Location
data structures
,
dp
,
math
,
number theory
2800
x414
1732D2
Balance (Hard version)
brute force
,
data structures
,
number theory
2400
x1366
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8293
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2462
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5581
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14036
1732A
Bestie
brute force
,
combinatorics
,
constructive algorithms
,
implementation
,
math
,
number theory
1000
x14444
1731F
Function Sum
brute force
,
combinatorics
,
dp
,
fft
,
math
2500
x660
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2671
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6749
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8989
1731B
Kill Demodogs
greedy
,
math
1100
x16826
1731A
Joey Takes Money
greedy
,
math
800
x22140
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x412
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x615
1730D
Prefixes and Suffixes
constructive algorithms
,
strings
,
two pointers
2200
x2598
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x16080
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11893
1730A
Planets
data structures
,
greedy
,
sortings
800
x22541
1729G
Cut Substrings
combinatorics
,
dp
,
hashing
,
strings
,
two pointers
2100
x2063
1729F
Kirei and the Linear Function
hashing
,
math
1900
x4001
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6745
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x18919
1729C
Jumping on Tiles
constructive algorithms
,
strings
1100
x19462
1729B
Decode String
greedy
,
strings
800
x29436
1729A
Two Elevators
math
800
x39016
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x424
1728F
Fishermen
flows
,
graph matchings
,
greedy
3100
x409
1728E
Red-Black Pepper
brute force
,
data structures
,
greedy
,
math
,
number theory
2300
x1652
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x6890
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x15274
1728B
Best Permutation
constructive algorithms
,
greedy
800
x19927
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24374
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x80
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x283
1726F
Late For Work (submissions are not allowed)
data structures
,
greedy
,
schedules
,
shortest paths
2900
x131
1726E
Almost Perfect
combinatorics
,
fft
,
math
2400
x1358
1726D
Edge Split
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
probabilities
,
trees
2000
x3552
1726C
Jatayu's Balanced Bracket Sequence
data structures
,
dsu
,
graphs
,
greedy
1300
x12083
1726B
Mainak and Interesting Sequence
bitmasks
,
constructive algorithms
,
math
1100
x14674
1726A
Mainak and Array
greedy
,
math
900
x19945
1725M
Moving Both Hands
dp
,
graphs
,
shortest paths
1800
x2860
1725L
Lemper Cooking Competition
data structures
2400
x876
1725K
Kingdom of Criticism
data structures
,
dsu
2500
x580
1725J
Journey
dp
,
trees
2500
x356
1725I
Imitating the Key Tree
combinatorics
,
dsu
,
trees
2800
x187
1725H
Hot Black Hot White
constructive algorithms
,
math
1800
x2507
1725G
Garage
binary search
,
geometry
,
math
1500
x5616
1725F
Field Photography
bitmasks
,
data structures
,
sortings
2100
x938
1725E
Electrical Efficiency
combinatorics
,
data structures
,
dp
,
math
,
number theory
,
trees
2500
x433
1725D
Deducing Sortability
binary search
,
bitmasks
,
math
2900
x118
1725C
Circular Mirror
binary search
,
combinatorics
,
geometry
,
math
,
two pointers
2000
x1542
1725B
Basketball Together
binary search
,
greedy
,
sortings
1000
x11777
1725A
Accumulation of Dominoes
math
800
x9074
1722G
Even-Odd XOR
bitmasks
,
constructive algorithms
,
greedy
1500
x10431
1722F
L-shapes
dfs and similar
,
implementation
1700
x6567
1722E
Counting Rectangles
brute force
,
data structures
,
dp
,
implementation
1600
x10105
1722D
Line
greedy
,
sortings
1100
x22323
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