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Codeforces Round 943 (Div. 3)
20:00:08
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Difficulty:
—
implementation
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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Custom test
Problems
#
Name
1512B
Almost Rectangle
implementation
800
x24996
1569A
Balanced Substring
implementation
800
x25264
1651A
Playoff
implementation
800
x25329
1690C
Restoring the Duration of Tasks
data structures
,
greedy
,
implementation
800
x25373
1697A
Parkway Walk
greedy
,
implementation
800
x25388
1814A
Coins
implementation
,
math
800
x25526
1856A
Tales of a Sort
implementation
800
x25738
1922A
Tricky Template
constructive algorithms
,
implementation
,
strings
800
x25808
1701A
Grass Field
implementation
800
x25828
1547B
Alphabetical Strings
greedy
,
implementation
,
strings
800
x25949
1846B
Rudolph and Tic-Tac-Toe
brute force
,
implementation
,
strings
800
x25995
1391B
Fix You
brute force
,
greedy
,
implementation
800
x26011
978A
Remove Duplicates
implementation
800
x26017
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x26053
1560C
Infinity Table
implementation
,
math
800
x26074
1487A
Arena
implementation
,
sortings
800
x26152
1744A
Number Replacement
greedy
,
implementation
800
x26311
1003A
Polycarp's Pockets
implementation
800
x26351
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x26441
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x26514
1721A
Image
greedy
,
implementation
800
x26574
1644A
Doors and Keys
implementation
800
x26829
119A
Epic Game
implementation
800
x26876
1849A
Morning Sandwich
implementation
,
math
800
x26980
1829C
Mr. Perfectly Fine
bitmasks
,
greedy
,
implementation
800
x27018
330A
Cakeminator
brute force
,
implementation
800
x27399
1788A
One and Two
brute force
,
implementation
,
math
800
x27455
1454B
Unique Bid Auction
implementation
800
x27569
255A
Greg's Workout
implementation
800
x27650
599A
Patrick and Shopping
implementation
800
x27781
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x27968
1772B
Matrix Rotation
brute force
,
implementation
800
x28143
34A
Reconnaissance 2
implementation
800
x28420
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x28502
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x28644
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28721
1759A
Yes-Yes?
implementation
,
strings
800
x28723
711A
Bus to Udayland
brute force
,
implementation
800
x28799
1220A
Cards
implementation
,
sortings
,
strings
800
x28805
1632A
ABC
implementation
800
x28891
1541A
Pretty Permutations
constructive algorithms
,
greedy
,
implementation
800
x28967
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x28974
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x29104
1714B
Remove Prefix
data structures
,
greedy
,
implementation
800
x29276
1722C
Word Game
data structures
,
implementation
800
x29351
1095A
Repeating Cipher
implementation
800
x29395
1926B
Vlad and Shapes
geometry
,
implementation
800
x29479
1914A
Problemsolving Log
implementation
,
strings
800
x29545
1567A
Domino Disaster
implementation
,
strings
800
x29614
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x29678
1741A
Compare T-Shirt Sizes
implementation
,
implementation
,
strings
800
x29769
1547A
Shortest Path with Obstacle
implementation
,
math
800
x29854
1800A
Is It a Cat?
implementation
,
strings
800
x29931
1619B
Squares and Cubes
implementation
,
math
800
x30020
1303A
Erasing Zeroes
implementation
,
strings
800
x30469
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30627
1846A
Rudolph and Cut the Rope
implementation
,
math
800
x31321
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x31401
540A
Combination Lock
implementation
800
x31466
1833A
Musical Puzzle
implementation
,
strings
800
x31507
822A
I'm bored with life
implementation
,
math
,
number theory
800
x31631
1921B
Arranging Cats
greedy
,
implementation
800
x31857
1692C
Where's the Bishop?
implementation
800
x32384
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x32474
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x32483
1950B
Upscaling
implementation
800
x32523
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x32782
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32816
1650A
Deletions of Two Adjacent Letters
implementation
,
strings
800
x33838
1907A
Rook
implementation
800
x33841
1703C
Cypher
brute force
,
implementation
,
strings
800
x34043
1950C
Clock Conversion
implementation
,
math
800
x34119
265A
Colorful Stones (Simplified Edition)
implementation
800
x34303
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x34831
1760C
Advantage
data structures
,
implementation
,
sortings
800
x34885
1873C
Target Practice
implementation
,
math
800
x35001
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x35428
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35578
1607A
Linear Keyboard
implementation
,
strings
800
x35977
1186A
Vus the Cossack and a Contest
implementation
800
x36094
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36719
1097A
Gennady and a Card Game
brute force
,
implementation
800
x36970
509A
Maximum in Table
brute force
,
implementation
800
x37208
1915C
Can I Square?
binary search
,
implementation
800
x37245
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x38235
1669B
Triple
implementation
,
sortings
800
x39735
1462A
Favorite Sequence
implementation
,
two pointers
800
x39854
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40206
233A
Perfect Permutation
implementation
,
math
800
x40341
1791C
Prepend and Append
implementation
,
two pointers
800
x40364
1829B
Blank Space
implementation
800
x40570
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40637
1850C
Word on the Paper
implementation
,
strings
800
x40815
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x41364
935A
Fafa and his Company
brute force
,
implementation
800
x41463
1926A
Vlad and the Best of Five
implementation
800
x41500
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41580
1791B
Following Directions
geometry
,
implementation
800
x41681
1950A
Stair, Peak, or Neither?
implementation
800
x42503
731A
Night at the Museum
implementation
,
strings
800
x43048
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