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EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)
28:02:22
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Difficulty:
—
greedy
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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Status
Standings
Custom test
Problems
#
Name
1986B
Matrix Stabilization
brute force
,
data structures
,
greedy
,
sortings
1000
x20645
1985C
Good Prefixes
greedy
1000
x25633
1982A
Soccer
greedy
,
implementation
,
math
,
sortings
800
x19844
1981A
Turtle and Piggy Are Playing a Game
brute force
,
greedy
,
math
800
x19479
1979B
XOR Sequences
bitmasks
,
greedy
1000
x19710
1979A
Guess the Maximum
brute force
,
greedy
,
implementation
800
x25822
1978B
New Bakery
binary search
,
greedy
,
math
,
ternary search
800
x18533
1978A
Alice and Books
constructive algorithms
,
greedy
,
sortings
800
x21100
1975B
378QAQ and Mocha's Array
brute force
,
greedy
,
math
,
sortings
1000
x15331
1975A
Bazoka and Mocha's Array
brute force
,
greedy
,
implementation
,
sortings
800
x16915
1974A
Phone Desktop
greedy
,
math
800
x30271
1972A
Contest Proposal
brute force
,
greedy
,
two pointers
800
x20907
1969B
Shifts and Sorting
constructive algorithms
,
greedy
1000
x16785
1968B
Prefiquence
greedy
,
two pointers
800
x25665
1966A
Card Exchange
constructive algorithms
,
games
,
greedy
800
x16334
1957A
Stickogon
constructive algorithms
,
greedy
800
x21631
1956B
Nene and the Card Game
games
,
greedy
800
x20057
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x20243
1954A
Painting the Ribbon
constructive algorithms
,
greedy
,
math
900
x22048
1951A
Dual Trigger
constructive algorithms
,
greedy
,
math
900
x18042
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x24722
1945A
Setting up Camp
greedy
,
math
800
x26060
1944A
Destroying Bridges
graphs
,
greedy
,
math
800
x22267
1941C
Rudolf and the Ugly String
dp
,
greedy
,
strings
900
x31092
1941B
Rudolf and 121
brute force
,
dp
,
greedy
,
math
1000
x27693
1934A
Too Min Too Max
greedy
,
math
800
x24217
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x36543
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x27856
1931C
Make Equal Again
brute force
,
greedy
,
math
1000
x27171
1931B
Make Equal
greedy
800
x30872
1930A
Maximise The Score
greedy
,
sortings
800
x17743
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x24320
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x29955
1927C
Choose the Different Ones!
brute force
,
greedy
,
math
1000
x26421
1927B
Following the String
constructive algorithms
,
greedy
,
strings
900
x31338
1927A
Make it White
greedy
,
strings
800
x40940
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x27789
1923A
Moving Chips
greedy
,
implementation
800
x23780
1921C
Sending Messages
greedy
,
math
900
x28021
1921B
Arranging Cats
greedy
,
implementation
800
x32616
1921A
Square
greedy
,
math
800
x41012
1920A
Satisfying Constraints
brute force
,
greedy
,
math
800
x26919
1919B
Plus-Minus Split
greedy
800
x29156
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x22714
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x29272
1915D
Unnatural Language Processing
greedy
,
implementation
,
strings
900
x28623
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x26646
1901A
Line Trip
greedy
,
math
800
x27164
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x23609
1896B
AB Flipping
greedy
,
strings
,
two pointers
900
x13903
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x19962
1884A
Simple Design
brute force
,
greedy
,
math
800
x16849
1882A
Increasing Sequence
greedy
800
x24776
1879B
Chips on the Board
constructive algorithms
,
greedy
900
x21675
1879A
Rigged!
greedy
800
x22635
1878A
How Much Does Daytona Cost?
greedy
800
x40686
1876A
Helmets in Night Light
greedy
,
sortings
1000
x15772
1875A
Jellyfish and Undertale
brute force
,
greedy
900
x23041
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x33659
1873B
Good Kid
brute force
,
greedy
,
math
800
x46022
1872B
The Corridor or There and Back Again
greedy
,
implementation
900
x27132
1872A
Two Vessels
brute force
,
greedy
,
math
800
x38019
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x18724
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x19968
1863A
Channel
greedy
,
implementation
800
x17647
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x31450
1861B
Two Binary Strings
constructive algorithms
,
dp
,
greedy
1000
x20650
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x25241
1858C
Yet Another Permutation Problem
constructive algorithms
,
greedy
,
math
,
number theory
1000
x22368
1858A
Buttons
games
,
greedy
,
math
800
x35671
1857A
Array Coloring
greedy
,
math
800
x45066
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x24784
1855A
Dalton the Teacher
greedy
,
math
800
x27476
1853A
Desorting
brute force
,
greedy
,
math
800
x29536
1851C
Tiles Comeback
greedy
1000
x22699
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x28599
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x33883
1849B
Monsters
greedy
,
math
,
sortings
1000
x23740
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x19438
1847A
The Man who became a God
greedy
,
sortings
800
x21819
1843B
Long Long
greedy
,
math
,
two pointers
800
x28381
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x33459
1839A
The Good Array
greedy
,
implementation
,
math
800
x17217
1837C
Best Binary String
constructive algorithms
,
greedy
1000
x21423
1837B
Comparison String
greedy
900
x27550
1834B
Maximum Strength
greedy
,
math
1000
x14795
1834A
Unit Array
greedy
,
math
800
x22424
1833C
Vlad Building Beautiful Array
greedy
,
math
800
x25741
1833B
Restore the Weather
greedy
,
sortings
900
x25763
1831B
Array merging
constructive algorithms
,
greedy
1000
x19302
1829C
Mr. Perfectly Fine
bitmasks
,
greedy
,
implementation
800
x27656
1825B
LuoTianyi and the Table
greedy
,
math
1000
x14347
1825A
LuoTianyi and the Palindrome String
greedy
,
strings
800
x19407
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24301
1818A
Politics
greedy
,
implementation
800
x12779
1816B
Grid Reconstruction
constructive algorithms
,
greedy
1000
x14929
1811A
Insert Digit
greedy
,
math
,
strings
800
x30413
1810A
Beautiful Sequence
brute force
,
greedy
800
x20488
1809B
Points on Plane
binary search
,
greedy
,
math
1000
x19293
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x29628
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