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EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)
19:41:35
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combine-tags-by-or
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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
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x18726
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x15066
1869A
Make It Zero
constructive algorithms
900
x19672
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x71
1868E
Min-Sum-Max
constructive algorithms
,
dp
,
greedy
3500
x77
1868D
Flower-like Pseudotree
constructive algorithms
,
graphs
,
greedy
,
implementation
,
trees
3000
x257
1868C
Travel Plan
combinatorics
,
dp
,
implementation
,
math
,
trees
2400
x1105
1868B2
Candy Party (Hard Version)
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
implementation
,
math
2100
x2319
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6660
1868A
Fill in the Matrix
constructive algorithms
,
implementation
1300
x11515
1867F
Most Different Tree
brute force
,
constructive algorithms
,
dfs and similar
,
greedy
,
hashing
2700
x405
1867E2
Salyg1n and Array (hard version)
constructive algorithms
,
interactive
2200
x3050
1867E1
Salyg1n and Array (simple version)
constructive algorithms
,
interactive
,
math
2000
x3595
1867D
Cyclic Operations
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
1800
x5508
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x10816
1867B
XOR Palindromes
bitmasks
,
constructive algorithms
,
strings
1100
x16254
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x19566
1866M
Mighty Rock Tower
brute force
,
combinatorics
,
dp
,
math
,
probabilities
2400
x703
1866L
Lihmuf Balling
binary search
,
brute force
,
math
2400
x663
1866K
Keen Tree Calculation
binary search
,
data structures
,
dp
,
geometry
,
graphs
,
implementation
,
trees
2500
x416
1866J
Jackets and Packets
dp
2800
x271
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x684
1866H
Happy Sets
combinatorics
2100
x1556
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1547
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x125
1866E
Elevators of Tamem
dp
2700
x279
1866D
Digital Wallet
dp
,
greedy
2300
x1222
1866C
Completely Searching for Inversions
dfs and similar
,
dp
,
graphs
1900
x2915
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7396
1866A
Ambitious Kid
math
800
x19375
1864I
Future Dominators
graphs
,
greedy
3500
x85
1864H
Asterism Stream
dp
,
math
,
matrices
3200
x276
1864G
Magic Square
combinatorics
,
constructive algorithms
,
implementation
3100
x255
1864F
Exotic Queries
data structures
,
implementation
,
sortings
2300
x1352
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2501
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6490
1864C
Divisor Chain
bitmasks
,
constructive algorithms
,
math
,
number theory
1300
x12947
1864B
Swap and Reverse
constructive algorithms
,
greedy
,
sortings
,
strings
1100
x14975
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x19969
1863I
Redundant Routes
constructive algorithms
,
dp
,
trees
3500
x72
1863H
Goldberg Machine 3
dp
,
trees
3500
x73
1863G
Swaps
combinatorics
,
dp
,
graphs
,
math
2800
x587
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x1053
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2656
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x9160
1863C
MEX Repetition
implementation
,
math
1100
x13635
1863B
Split Sort
greedy
,
math
,
sortings
1100
x14810
1863A
Channel
greedy
,
implementation
800
x17650
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2736
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x5866
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x10091
1862D
Ice Cream Balls
binary search
,
combinatorics
,
constructive algorithms
,
math
1300
x16450
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x20045
1862B
Sequence Game
constructive algorithms
800
x29896
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x31454
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x188
1861E
Non-Intersecting Subpermutations
combinatorics
,
dp
,
implementation
,
math
2300
x1645
1861D
Sorting By Multiplication
dp
,
greedy
1800
x6438
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x9693
1861B
Two Binary Strings
constructive algorithms
,
dp
,
greedy
1000
x20653
1861A
Prime Deletion
constructive algorithms
,
math
800
x23442
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x266
1860E
Fast Travel Text Editor
data structures
,
dfs and similar
,
graphs
,
shortest paths
2400
x1333
1860D
Balanced String
dp
2200
x2836
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12721
1860B
Fancy Coins
binary search
,
brute force
,
greedy
,
math
1200
x16367
1860A
Not a Substring
constructive algorithms
,
strings
900
x21172
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x381
1859E
Maximum Monogonosity
brute force
,
dp
,
math
2500
x1691
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6691
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x16546
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x25245
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x30337
1858E2
Rollbacks (Hard Version)
data structures
,
interactive
,
trees
2600
x1021
1858E1
Rollbacks (Easy Version)
brute force
,
data structures
,
dfs and similar
,
trees
2500
x1267
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2735
1858C
Yet Another Permutation Problem
constructive algorithms
,
greedy
,
math
,
number theory
1000
x22373
1858B
The Walkway
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x10900
1858A
Buttons
games
,
greedy
,
math
800
x35679
1857G
Counting Graphs
combinatorics
,
divide and conquer
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2000
x4201
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x10752
1857E
Power of Points
math
,
sortings
1500
x11819
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x18303
1857C
Assembly via Minimums
greedy
,
sortings
1200
x23973
1857B
Maximum Rounding
greedy
,
implementation
,
math
1100
x22440
1857A
Array Coloring
greedy
,
math
800
x45081
1856E2
PermuTree (hard version)
bitmasks
,
dfs and similar
,
dp
,
fft
,
greedy
,
implementation
,
math
,
trees
2700
x1332
1856E1
PermuTree (easy version)
dfs and similar
,
dp
,
trees
1800
x5026
1856D
More Wrong
divide and conquer
,
interactive
2100
x3149
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x11505
1856B
Good Arrays
implementation
,
math
900
x23548
1856A
Tales of a Sort
implementation
800
x26059
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x24790
1855A
Dalton the Teacher
greedy
,
math
800
x27478
1854F
Mark and Spaceship
brute force
,
dp
3500
x116
1854E
Game Bundles
brute force
,
constructive algorithms
,
dp
,
greedy
,
math
3000
x388
1854D
Michael and Hotel
binary search
,
interactive
,
trees
3000
x530
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1414
1854B
Earn or Unlock
bitmasks
,
brute force
,
dp
2200
x3406
1854A2
Dual (Hard Version)
constructive algorithms
,
math
1900
x6805
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