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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
#
Name
1528A
Parsa's Humongous Tree
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
trees
1600
x14668
1527C
Sequence Pair Weight
hashing
,
implementation
,
math
1600
x13520
1526C2
Potions (Hard Version)
data structures
,
greedy
1600
x22564
1526C1
Potions (Easy Version)
brute force
,
data structures
,
dp
,
greedy
1500
x22371
1526B
I Hate 1111
dp
,
math
,
number theory
1400
x30490
1525D
Armchairs
dp
,
flows
,
graph matchings
,
greedy
1800
x9761
1523C
Compression and Expansion
brute force
,
data structures
,
greedy
,
implementation
,
trees
1600
x8758
1520F1
Guess the K-th Zero (Easy version)
binary search
,
interactive
1600
x11710
1520E
Arranging The Sheep
greedy
,
math
1400
x21358
1519D
Maximum Sum of Products
brute force
,
dp
,
implementation
,
math
,
two pointers
1600
x15211
1519C
Berland Regional
brute force
,
data structures
,
greedy
,
number theory
,
sortings
1400
x16906
1517D
Explorer Space
dp
,
graphs
,
shortest paths
1800
x7706
1517C
Fillomino 2
constructive algorithms
,
dfs and similar
,
greedy
,
implementation
1400
x13354
1516C
Baby Ehab Partitions Again
bitmasks
,
constructive algorithms
,
dp
,
math
1700
x11926
1516B
AGAGA XOOORRR
bitmasks
,
brute force
,
dp
,
greedy
1500
x19336
1515D
Phoenix and Socks
greedy
,
sortings
,
two pointers
1500
x11370
1515C
Phoenix and Towers
constructive algorithms
,
data structures
,
greedy
1400
x17092
1514C
Product 1 Modulo N
greedy
,
number theory
1600
x15084
1513C
Add One
dp
,
matrices
1600
x13987
1513B
AND Sequences
bitmasks
,
combinatorics
,
constructive algorithms
,
math
1400
x14676
1512G
Short Task
brute force
,
dp
,
math
,
number theory
1700
x8123
1512E
Permutation by Sum
brute force
,
greedy
,
math
1600
x10466
1511D
Min Cost String
brute force
,
constructive algorithms
,
graphs
,
greedy
,
strings
1600
x11488
1509C
The Sports Festival
dp
,
greedy
1800
x12531
1508B
Almost Sorted
binary search
,
combinatorics
,
constructive algorithms
,
implementation
1800
x3993
1506E
Restoring the Permutation
constructive algorithms
,
implementation
1500
x13076
1506D
Epic Transformation
constructive algorithms
,
data structures
,
greedy
1400
x21713
1505E
Cakewalk
*special problem
,
greedy
,
implementation
,
shortest paths
1800
x1800
1505D
Xenolith? Hippodrome?
*special problem
,
number theory
1800
x795
1505C
Fibonacci Words
*special problem
,
implementation
1400
x6430
1505B
DMCA
*special problem
,
implementation
,
number theory
1600
x6156
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x7034
1503A
Balance the Bits
constructive algorithms
,
greedy
1600
x13393
1500A
Going Home
brute force
,
hashing
,
implementation
,
math
1800
x8819
1499C
Minimum Grid Path
brute force
,
data structures
,
greedy
,
math
1500
x12636
1498C
Planar Reflections
brute force
,
data structures
,
dp
1600
x9691
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x8304
1497C2
k-LCM (hard version)
constructive algorithms
,
math
1600
x17232
1494B
Berland Crossword
bitmasks
,
brute force
,
greedy
,
implementation
1400
x14313
1492C
Maximum width
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1500
x16078
1491D
Zookeeper and The Infinite Zoo
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
1800
x7169
1491C
Pekora and Trampoline
brute force
,
data structures
,
dp
,
greedy
,
implementation
1700
x7908
1490F
Equalize the Array
binary search
,
data structures
,
greedy
,
math
,
sortings
1500
x16122
1490E
Accidental Victory
binary search
,
data structures
,
greedy
1400
x19059
1488B
RBS Deletion
*special problem
,
greedy
1800
x558
1487D
Pythagorean Triples
binary search
,
brute force
,
math
,
number theory
1500
x17864
1487C
Minimum Ties
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
1500
x14135
1486C1
Guessing the Greatest (easy version)
binary search
,
interactive
1600
x12161
1486B
Eastern Exhibition
binary search
,
geometry
,
shortest paths
,
sortings
1500
x15942
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9937
1482C
Basic Diplomacy
brute force
,
constructive algorithms
,
greedy
,
implementation
1600
x9387
1482B
Restore Modulo
implementation
,
math
1500
x9178
1481C
Fence Painting
brute force
,
constructive algorithms
,
greedy
1600
x11620
1479A
Searching Local Minimum
binary search
,
interactive
,
ternary search
1700
x11619
1478C
Nezzar and Symmetric Array
implementation
,
math
,
sortings
1700
x9758
1477A
Nezzar and Board
constructive algorithms
,
math
,
number theory
1800
x5934
1476D
Journey
dfs and similar
,
dp
,
dsu
,
implementation
1700
x8628
1476C
Longest Simple Cycle
dp
,
graphs
,
greedy
1600
x11362
1475E
Advertising Agency
combinatorics
,
math
,
sortings
1600
x13615
1475D
Cleaning the Phone
binary search
,
dp
,
sortings
,
two pointers
1800
x10143
1475C
Ball in Berland
combinatorics
,
graphs
,
math
1400
x21145
1474C
Array Destruction
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1700
x12653
1473D
Program
data structures
,
dp
,
implementation
,
strings
1700
x9624
1473C
No More Inversions
constructive algorithms
,
math
1500
x12679
1472E
Correct Placement
binary search
,
data structures
,
dp
,
sortings
,
two pointers
1700
x8013
1469D
Ceil Divisions
brute force
,
constructive algorithms
,
math
,
number theory
1700
x9424
1469C
Building a Fence
dp
,
greedy
,
implementation
,
two pointers
1600
x10741
1468K
The Robot
brute force
,
implementation
1600
x5090
1468J
Road Reform
dsu
,
graphs
,
greedy
1800
x4267
1468F
Full Turn
geometry
,
hashing
,
number theory
1700
x3712
1468D
Firecrackers
binary search
,
sortings
1700
x4654
1468C
Berpizza
data structures
,
implementation
1400
x7808
1467B
Hills And Valleys
brute force
,
implementation
1700
x10931
1466E
Apollo versus Pan
bitmasks
,
brute force
,
math
1800
x7294
1466D
13th Labour of Heracles
data structures
,
greedy
,
sortings
,
trees
1500
x11324
1463C
Busy Robot
implementation
1800
x5654
1463B
Find The Array
bitmasks
,
constructive algorithms
,
greedy
1400
x19372
1462F
The Treasure of The Segments
binary search
,
data structures
,
greedy
1800
x6960
1462E2
Close Tuples (hard version)
binary search
,
combinatorics
,
implementation
,
math
,
sortings
,
two pointers
1700
x9680
1462E1
Close Tuples (easy version)
binary search
,
combinatorics
,
math
,
sortings
,
two pointers
1500
x13725
1462D
Add to Neighbour and Remove
greedy
,
math
,
number theory
1400
x16716
1461D
Divide and Summarize
binary search
,
brute force
,
data structures
,
divide and conquer
,
implementation
,
sortings
1600
x9224
1461C
Random Events
dp
,
math
,
probabilities
1500
x11209
1461B
Find the Spruce
brute force
,
dp
,
implementation
1400
x12615
1458A
Row GCD
math
,
number theory
1600
x17675
1455D
Sequence and Swaps
dp
,
greedy
,
sortings
1600
x12309
1453C
Triangles
greedy
,
implementation
1700
x6032
1453B
Suffix Operations
constructive algorithms
,
implementation
1400
x13327
1452D
Radio Towers
combinatorics
,
dp
,
math
1600
x7974
1452B
Toy Blocks
binary search
,
greedy
,
math
,
sortings
1400
x14696
1451D
Circle Game
games
,
geometry
,
math
1700
x9511
1451C
String Equality
dp
,
greedy
,
hashing
,
implementation
,
strings
1400
x15555
1450D
Rating Compression
binary search
,
data structures
,
greedy
,
implementation
,
two pointers
1800
x5474
1446B
Catching Cheaters
dp
,
strings
1800
x7830
1444A
Division
brute force
,
math
,
number theory
1500
x13015
1443C
The Delivery Dilemma
binary search
,
greedy
,
sortings
1400
x15257
1442B
Identify the Operations
combinatorics
,
data structures
,
dsu
,
greedy
,
implementation
1800
x4483
1442A
Extreme Subtraction
constructive algorithms
,
dp
,
greedy
1800
x8867
1439A1
Binary Table (Easy Version)
constructive algorithms
,
implementation
1500
x9366
1437D
Minimal Height Tree
graphs
,
greedy
,
shortest paths
,
trees
1600
x12732
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