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Codeforces Round 941 (Div. 1)
3 days
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Before contest
Codeforces Round 941 (Div. 2)
3 days
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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
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implementation
interactive
math
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number theory
probabilities
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Problems
#
Name
1833C
Vlad Building Beautiful Array
greedy
,
math
800
x25447
1814A
Coins
implementation
,
math
800
x25435
1355A
Sequence with Digits
brute force
,
implementation
,
math
1200
x25434
1927C
Choose the Different Ones!
brute force
,
greedy
,
math
1000
x25283
450B
Jzzhu and Sequences
implementation
,
math
1300
x25268
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25259
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25255
1562A
The Miracle and the Sleeper
greedy
,
math
800
x25164
1517A
Sum of 2050
greedy
,
math
800
x25072
1593B
Make it Divisible by 25
dfs and similar
,
dp
,
greedy
,
math
,
math
900
x25044
1525A
Potion-making
math
,
number theory
800
x25037
1304A
Two Rabbits
math
800
x24982
1719A
Chip Game
games
,
math
800
x24962
515C
Drazil and Factorial
greedy
,
math
,
sortings
1400
x24884
598A
Tricky Sum
math
900
x24744
1741B
Funny Permutation
constructive algorithms
,
math
800
x24725
1901A
Line Trip
greedy
,
math
800
x24713
352A
Jeff and Digits
brute force
,
implementation
,
math
1000
x24558
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24525
1607B
Odd Grasshopper
math
900
x24444
1497C1
k-LCM (easy version)
constructive algorithms
,
math
1200
x24440
1916A
2023
constructive algorithms
,
implementation
,
math
,
number theory
800
x24421
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x24412
1463A
Dungeon
binary search
,
math
1100
x24403
1471A
Strange Partition
greedy
,
math
,
number theory
900
x24400
1840C
Ski Resort
combinatorics
,
math
,
two pointers
1000
x24390
1845A
Forbidden Integer
constructive algorithms
,
implementation
,
math
,
number theory
800
x24382
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24085
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x24079
1515B
Phoenix and Puzzle
brute force
,
geometry
,
math
,
number theory
1000
x24072
1917A
Least Product
constructive algorithms
,
math
800
x24045
1398C
Good Subarrays
data structures
,
dp
,
math
1600
x24037
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24010
1391A
Suborrays
constructive algorithms
,
math
800
x23976
1624C
Division by Two and Permutation
constructive algorithms
,
flows
,
graph matchings
,
greedy
,
math
1100
x23968
1646A
Square Counting
math
800
x23950
1613A
Long Comparison
implementation
,
math
900
x23911
1451A
Subtract or Divide
greedy
,
math
800
x23896
1945A
Setting up Camp
greedy
,
math
800
x23887
1467A
Wizard of Orz
constructive algorithms
,
greedy
,
math
900
x23832
1345A
Puzzle Pieces
math
800
x23795
507B
Amr and Pins
geometry
,
math
1400
x23783
1514A
Perfectly Imperfect Array
math
,
number theory
800
x23764
1594A
Consecutive Sum Riddle
math
800
x23763
1883A
Morning
math
800
x23676
1657A
Integer Moves
brute force
,
math
800
x23642
1699A
The Third Three Number Problem
constructive algorithms
,
math
800
x23608
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x23585
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x23549
1420B
Rock and Lever
bitmasks
,
math
1200
x23511
1881B
Three Threadlets
math
900
x23477
1370C
Number Game
games
,
math
,
number theory
1400
x23474
1213A
Chips Moving
math
900
x23459
1326B
Maximums
implementation
,
math
900
x23449
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23444
272A
Dima and Friends
implementation
,
math
1000
x23439
1916B
Two Divisors
constructive algorithms
,
math
,
number theory
1000
x23437
1748A
The Ultimate Square
math
800
x23433
1206A
Choose Two Numbers
math
,
sortings
800
x23419
1395A
Boboniu Likes to Color Balls
brute force
,
math
1000
x23411
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23383
1895A
Treasure Chest
math
800
x23317
1102A
Integer Sequence Dividing
math
800
x23296
1430C
Numbers on Whiteboard
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
1000
x23270
1238A
Prime Subtraction
math
,
number theory
900
x23215
1354A
Alarm Clock
math
900
x23211
1715A
Crossmarket
constructive algorithms
,
greedy
,
math
800
x23152
1934A
Too Min Too Max
greedy
,
math
800
x23053
1370B
GCD Compression
constructive algorithms
,
math
,
number theory
1100
x23044
1861A
Prime Deletion
constructive algorithms
,
math
800
x23019
1856B
Good Arrays
implementation
,
math
900
x22987
1779B
MKnez's ConstructiveForces Task
constructive algorithms
,
math
900
x22949
1629B
GCD Arrays
greedy
,
math
,
number theory
800
x22941
1665A
GCD vs LCM
constructive algorithms
,
math
800
x22899
1790C
Premutation
brute force
,
implementation
,
math
1000
x22855
1828A
Divisible Array
constructive algorithms
,
math
800
x22846
1420A
Cubes Sorting
math
,
sortings
900
x22815
1744B
Even-Odd Increments
implementation
,
math
800
x22731
1409C
Yet Another Array Restoration
brute force
,
math
,
number theory
1200
x22705
1566A
Median Maximization
binary search
,
greedy
,
math
800
x22692
1543B
Customising the Track
combinatorics
,
greedy
,
math
900
x22625
1772C
Different Differences
constructive algorithms
,
greedy
,
math
1000
x22619
1498A
GCD Sum
brute force
,
math
800
x22616
1334A
Level Statistics
implementation
,
math
1200
x22606
1514B
AND 0, Sum Big
bitmasks
,
combinatorics
,
math
1200
x22584
1367C
Social Distance
constructive algorithms
,
greedy
,
math
1300
x22568
1338A
Powered Addition
greedy
,
math
1500
x22550
1700A
Optimal Path
constructive algorithms
,
greedy
,
math
800
x22523
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x22459
1849B
Monsters
greedy
,
math
,
sortings
1000
x22458
1647A
Madoka and Math Dad
implementation
,
math
800
x22436
1492A
Three swimmers
math
800
x22393
1436A
Reorder
math
800
x22388
1883C
Raspberries
dp
,
math
1000
x22358
1617B
GCD Problem
brute force
,
constructive algorithms
,
math
,
number theory
900
x22333
1108B
Divisors of Two Integers
brute force
,
greedy
,
math
,
number theory
1100
x22317
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22254
1822C
Bun Lover
math
800
x22235
1806A
Walking Master
geometry
,
greedy
,
math
800
x22135
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x22129
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