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Codeforces Round 945 (Div. 2)
3 days
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math
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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
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probabilities
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Problems
#
Name
1681B
Card Trick
implementation
,
math
800
x19830
1735A
Working Week
constructive algorithms
,
greedy
,
math
800
x19890
1623A
Robot Cleaner
brute force
,
implementation
,
math
800
x19892
835A
Key races
math
800
x19944
513A
Game
constructive algorithms
,
math
800
x19945
1515A
Phoenix and Gold
constructive algorithms
,
greedy
,
math
800
x20016
1257A
Two Rival Students
greedy
,
math
800
x20029
1658A
Marin and Photoshoot
constructive algorithms
,
implementation
,
math
800
x20135
1482A
Prison Break
math
800
x20141
1392A
Omkar and Password
greedy
,
math
800
x20183
1393A
Rainbow Dash, Fluttershy and Chess Coloring
greedy
,
math
800
x20215
1605A
A.M. Deviation
math
,
number theory
800
x20339
832A
Sasha and Sticks
games
,
math
800
x20367
1615A
Closing The Gap
greedy
,
math
800
x20500
1684B
Z mod X = C
constructive algorithms
,
math
800
x20609
746A
Compote
implementation
,
math
800
x20634
1422A
Fence
geometry
,
math
800
x20641
1300A
Non-zero
implementation
,
math
800
x20682
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20765
1530A
Binary Decimal
greedy
,
math
800
x20768
1269A
Equation
brute force
,
math
800
x20900
1499A
Domino on Windowsill
combinatorics
,
constructive algorithms
,
math
800
x21019
1680A
Minimums and Maximums
brute force
,
math
800
x21028
1838A
Blackboard List
constructive algorithms
,
math
800
x21072
1716B
Permutation Chain
constructive algorithms
,
math
800
x21198
1928A
Rectangle Cutting
geometry
,
math
800
x21209
1638A
Reverse
constructive algorithms
,
greedy
,
math
800
x21217
1944A
Destroying Bridges
graphs
,
greedy
,
math
800
x21244
1834A
Unit Array
greedy
,
math
800
x21269
1223A
CME
math
800
x21319
1777A
Everybody Likes Good Arrays!
greedy
,
math
800
x21327
1061A
Coins
greedy
,
implementation
,
math
800
x21330
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x21359
1937A
Shuffle Party
implementation
,
math
800
x21475
1708A
Difference Operations
greedy
,
math
800
x21485
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x21628
1759B
Lost Permutation
math
800
x21645
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x21711
1452A
Robot Program
math
800
x21788
1905A
Constructive Problems
constructive algorithms
,
math
800
x21815
1249A
Yet Another Dividing into Teams
math
800
x21833
1774A
Add Plus Minus Sign
constructive algorithms
,
math
800
x21957
1731A
Joey Takes Money
greedy
,
math
800
x22130
294A
Shaass and Oskols
implementation
,
math
800
x22272
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22281
1822C
Bun Lover
math
800
x22327
1806A
Walking Master
geometry
,
greedy
,
math
800
x22342
1436A
Reorder
math
800
x22421
1492A
Three swimmers
math
800
x22443
1647A
Madoka and Math Dad
implementation
,
math
800
x22487
1700A
Optimal Path
constructive algorithms
,
greedy
,
math
800
x22555
1498A
GCD Sum
brute force
,
math
800
x22663
1566A
Median Maximization
binary search
,
greedy
,
math
800
x22752
1744B
Even-Odd Increments
implementation
,
math
800
x22834
1629B
GCD Arrays
greedy
,
math
,
number theory
800
x22980
1665A
GCD vs LCM
constructive algorithms
,
math
800
x22987
1828A
Divisible Array
constructive algorithms
,
math
800
x23020
1861A
Prime Deletion
constructive algorithms
,
math
800
x23127
1715A
Crossmarket
constructive algorithms
,
greedy
,
math
800
x23200
1934A
Too Min Too Max
greedy
,
math
800
x23422
1895A
Treasure Chest
math
800
x23434
1102A
Integer Sequence Dividing
math
800
x23445
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23483
1748A
The Ultimate Square
math
800
x23506
1206A
Choose Two Numbers
math
,
sortings
800
x23513
1699A
The Third Three Number Problem
constructive algorithms
,
math
800
x23657
1657A
Integer Moves
brute force
,
math
800
x23684
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x23802
1514A
Perfectly Imperfect Array
math
,
number theory
800
x23804
1345A
Puzzle Pieces
math
800
x23817
1594A
Consecutive Sum Riddle
math
800
x23856
1451A
Subtract or Divide
greedy
,
math
800
x23925
1646A
Square Counting
math
800
x23994
1883A
Morning
math
800
x24002
1391A
Suborrays
constructive algorithms
,
math
800
x24009
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24097
1917A
Least Product
constructive algorithms
,
math
800
x24225
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x24236
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x24547
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24551
1916A
2023
constructive algorithms
,
implementation
,
math
,
number theory
800
x24569
1845A
Forbidden Integer
constructive algorithms
,
implementation
,
math
,
number theory
800
x24647
1945A
Setting up Camp
greedy
,
math
800
x24727
1741B
Funny Permutation
constructive algorithms
,
math
800
x24800
1304A
Two Rabbits
math
800
x25021
1719A
Chip Game
games
,
math
800
x25025
1525A
Potion-making
math
,
number theory
800
x25075
1517A
Sum of 2050
greedy
,
math
800
x25111
1562A
The Miracle and the Sleeper
greedy
,
math
800
x25197
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25336
1901A
Line Trip
greedy
,
math
800
x25371
1833C
Vlad Building Beautiful Array
greedy
,
math
800
x25536
1674B
Dictionary
combinatorics
,
math
800
x25641
1674A
Number Transformation
constructive algorithms
,
math
800
x25684
1814A
Coins
implementation
,
math
800
x25737
1455A
Strange Functions
math
,
number theory
800
x26042
1560C
Infinity Table
implementation
,
math
800
x26107
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x26146
1968A
Maximize?
brute force
,
math
,
number theory
800
x26156
1920A
Satisfying Constraints
brute force
,
greedy
,
math
800
x26506
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