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Kotlin Heroes: Episode 11
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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
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Status
Standings
Custom test
Problems
#
Name
1667A
Make it Increasing
brute force
,
greedy
,
math
1300
x14674
1666L
Labyrinth
dfs and similar
,
graphs
1800
x3091
1666K
Kingdom Partition
flows
3200
x244
1666J
Job Lookup
constructive algorithms
,
dp
,
shortest paths
,
trees
2100
x1327
1666I
Interactive Treasure Hunt
brute force
,
constructive algorithms
,
geometry
,
interactive
,
math
2200
x1435
1666H
Heroes of Might
math
3500
x67
1666G
Global Warming
geometry
,
math
3100
x136
1666F
Fancy Stack
combinatorics
,
dp
,
implementation
2200
x1155
1666E
Even Split
binary search
,
constructive algorithms
,
greedy
,
math
2500
x710
1666D
Deletive Editing
greedy
900
x8387
1666C
Connect the Points
brute force
,
constructive algorithms
,
geometry
1800
x3162
1666B
Budget Distribution
3300
x54
1666A
Admissible Map
3300
x109
1665E
MinimizOR
bitmasks
,
brute force
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
two pointers
2500
x1515
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x3906
1665C
Tree Infection
binary search
,
greedy
,
sortings
,
trees
1600
x8342
1665B
Array Cloning Technique
constructive algorithms
,
greedy
,
sortings
900
x20247
1665A
GCD vs LCM
constructive algorithms
,
math
800
x23529
1663H
Cross-Language Program
*special problem
,
constructive algorithms
x1281
1663G
Six Characters
*special problem
,
constructive algorithms
,
strings
x211
1663F
In Every Generation...
*special problem
,
strings
x342
1663E
Are You Safe?
*special problem
,
implementation
x553
1663D
Is it rated - 3
*special problem
,
combinatorics
,
dp
,
math
x1406
1663C
Pōja Verdon
*special problem
,
implementation
,
math
x5667
1663B
Mike's Sequence
*special problem
,
divide and conquer
,
implementation
,
math
x3393
1663A
Who Tested?
*special problem
,
expression parsing
,
trees
x10484
1662O
Circular Maze
brute force
,
dfs and similar
,
graphs
,
implementation
x1342
1662N
Drone Photo
combinatorics
,
math
,
sortings
x751
1662M
Bottle Arrangements
constructive algorithms
x3431
1662L
Il Derby della Madonnina
data structures
,
dp
,
math
x1062
1662K
Pandemic Restrictions
geometry
,
ternary search
x334
1662J
Training Camp
flows
,
graphs
x230
1662I
Ice Cream Shop
brute force
,
implementation
,
sortings
x2096
1662H
Boundary
brute force
,
math
x2951
1662G
Gastronomic Event
dp
,
greedy
,
trees
x467
1662F
Antennas
data structures
,
dfs and similar
,
graphs
,
graphs
,
implementation
,
implementation
,
shortest paths
,
shortest paths
x1031
1662E
Round Table
math
x143
1662D
Evolution of Weasels
greedy
,
implementation
,
strings
x1798
1662C
European Trip
dp
,
graphs
,
math
,
matrices
x318
1662B
Toys
greedy
,
strings
x136
1662A
Organizing SWERC
brute force
,
implementation
x4314
1661F
Teleporters
binary search
,
greedy
2600
x586
1661E
Narrow Components
brute force
,
data structures
,
dp
,
dsu
,
math
,
trees
2500
x945
1661D
Progressions Covering
data structures
,
greedy
1900
x4719
1661C
Water the Trees
binary search
,
greedy
,
math
1700
x9305
1661B
Getting Zero
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1300
x17670
1661A
Array Balancing
greedy
,
math
800
x18344
1660F2
Promising String (hard version)
data structures
,
implementation
,
math
,
strings
2100
x2704
1660F1
Promising String (easy version)
brute force
,
implementation
,
math
,
strings
1700
x7231
1660E
Matrix and Shifts
brute force
,
constructive algorithms
,
greedy
,
implementation
1600
x7280
1660D
Maximum Product Strikes Back
brute force
,
implementation
,
math
,
two pointers
1600
x8630
1660C
Get an Even String
dp
,
greedy
,
strings
1300
x19504
1660B
Vlad and Candies
math
800
x28047
1660A
Vasya and Coins
greedy
,
math
800
x35899
1659F
Tree and Permutation Game
dfs and similar
,
games
,
graphs
,
trees
3000
x191
1659E
AND-MEX Walk
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2200
x1548
1659D
Reverse Sort Sum
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
,
two pointers
1900
x3998
1659C
Line Empire
binary search
,
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x10435
1659B
Bit Flipping
bitmasks
,
constructive algorithms
,
greedy
,
strings
1300
x10910
1659A
Red Versus Blue
constructive algorithms
,
greedy
,
implementation
,
math
1000
x18538
1658F
Juju and Binary String
brute force
,
constructive algorithms
,
greedy
,
math
2700
x760
1658E
Gojou and Matrix Game
data structures
,
dp
,
games
,
hashing
,
implementation
,
math
,
number theory
,
sortings
2500
x1046
1658D2
388535 (Hard Version)
bitmasks
,
brute force
,
data structures
,
math
2300
x2530
1658D1
388535 (Easy Version)
bitmasks
,
math
1600
x9041
1658C
Shinju and the Lost Permutation
constructive algorithms
,
math
1700
x9297
1658B
Marin and Anti-coprime Permutation
combinatorics
,
math
,
number theory
800
x18563
1658A
Marin and Photoshoot
constructive algorithms
,
implementation
,
math
800
x20299
1657F
Words on Tree
2-sat
,
dfs and similar
,
dsu
,
graphs
,
trees
2600
x574
1657E
Star MST
combinatorics
,
dp
,
graph matchings
,
math
2200
x2071
1657D
For Gamers. By Gamers.
binary search
,
brute force
,
greedy
,
math
,
sortings
2000
x4844
1657C
Bracket Sequence Deletion
greedy
,
implementation
1200
x16780
1657B
XY Sequence
greedy
800
x22772
1657A
Integer Moves
brute force
,
math
800
x23955
1656I
Neighbour Ordering
constructive algorithms
,
graphs
3500
x104
1656H
Equal LCM Subsets
data structures
,
math
,
number theory
3200
x569
1656G
Cycle Palindrome
constructive algorithms
,
graphs
,
math
3200
x383
1656F
Parametric MST
binary search
,
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
2600
x1031
1656E
Equal Tree Sums
constructive algorithms
,
dfs and similar
,
math
,
trees
2200
x3437
1656D
K-good
constructive algorithms
,
math
,
number theory
1900
x6836
1656C
Make Equal With Mod
constructive algorithms
,
math
,
number theory
,
sortings
1200
x19084
1656B
Subtract Operation
data structures
,
greedy
,
math
,
two pointers
1100
x18752
1656A
Good Pairs
math
,
sortings
800
x19572
1654H
Three Minimums
combinatorics
,
constructive algorithms
,
divide and conquer
,
dp
,
fft
,
math
3500
x76
1654G
Snowy Mountain
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
trees
2900
x393
1654F
Minimal String Xoration
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
hashing
,
sortings
,
strings
2800
x1191
1654E
Arithmetic Operations
brute force
,
data structures
,
graphs
,
math
2300
x2079
1654D
Potion Brewing Class
dfs and similar
,
math
,
number theory
,
trees
2100
x2838
1654C
Alice and the Cake
data structures
,
greedy
,
implementation
,
sortings
1400
x13448
1654B
Prefix Removals
strings
800
x15600
1654A
Maximum Cake Tastiness
brute force
,
greedy
,
implementation
,
sortings
800
x18628
1651F
Tower Defense
binary search
,
brute force
,
data structures
3000
x377
1651E
Sum of Matchings
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
graph matchings
,
greedy
,
math
2600
x517
1651D
Nearest Excluded Points
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
1900
x5080
1651C
Fault-tolerant Network
brute force
,
data structures
,
implementation
1500
x10692
1651B
Prove Him Wrong
constructive algorithms
,
greedy
800
x19514
1651A
Playoff
implementation
800
x25647
1650G
Counting Shortcuts
data structures
,
dfs and similar
,
dp
,
graphs
,
shortest paths
2100
x2471
1650F
Vitaly and Advanced Useless Algorithms
dp
,
greedy
,
implementation
2200
x1438
1650E
Rescheduling the Exam
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1900
x4134
1650D
Twist the Permutation
brute force
,
constructive algorithms
,
implementation
,
math
1300
x12990
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