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Before contest
Codeforces Round 941 (Div. 1)
18:26:07
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Before contest
Codeforces Round 941 (Div. 2)
18:26:07
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sortings
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
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number theory
probabilities
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Problems
#
Name
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197407
160A
Twins
greedy
,
sortings
900
x110465
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94032
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77619
230A
Dragons
greedy
,
sortings
1000
x74048
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70895
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70388
1399A
Remove Smallest
greedy
,
sortings
800
x62492
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56482
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55280
1760A
Medium Number
implementation
,
sortings
800
x53217
1850A
To My Critics
implementation
,
sortings
800
x50661
34B
Sale
greedy
,
sortings
900
x48414
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47423
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46343
1360B
Honest Coach
greedy
,
sortings
800
x45924
456A
Laptops
sortings
1100
x45217
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44899
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44104
451B
Sort the Array
implementation
,
sortings
1300
x42902
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40109
1669B
Triple
implementation
,
sortings
800
x39655
459B
Pashmak and Flowers
combinatorics
,
implementation
,
sortings
1300
x38369
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x37609
149A
Business trip
greedy
,
implementation
,
sortings
900
x37598
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x36172
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35046
1760C
Advantage
data structures
,
implementation
,
sortings
800
x34817
1335C
Two Teams Composing
binary search
,
greedy
,
implementation
,
sortings
1100
x33183
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x32861
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32805
1692B
All Distinct
greedy
,
sortings
800
x32650
977C
Less or Equal
sortings
1200
x32188
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x32031
1360C
Similar Pairs
constructive algorithms
,
graph matchings
,
greedy
,
sortings
1100
x31633
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31488
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x31002
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29520
1220A
Cards
implementation
,
sortings
,
strings
800
x28781
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28668
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28524
479C
Exams
greedy
,
sortings
1400
x28464
1626A
Equidistant Letters
constructive algorithms
,
sortings
800
x28304
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x27961
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x27436
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x27292
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x27097
1792A
GamingForces
greedy
,
sortings
800
x27091
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x26620
1487A
Arena
implementation
,
sortings
800
x26139
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x26063
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x26003
1092B
Teams Forming
sortings
800
x25595
1339B
Sorted Adjacent Differences
constructive algorithms
,
sortings
1200
x25514
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x25412
1697B
Promo
greedy
,
sortings
900
x25396
1833B
Restore the Weather
greedy
,
sortings
900
x25299
1334B
Middle Class
greedy
,
sortings
1100
x25131
515C
Drazil and Factorial
greedy
,
math
,
sortings
1400
x24894
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x24833
1355B
Young Explorers
dp
,
greedy
,
sortings
1200
x24830
1705A
Mark the Photographer
greedy
,
sortings
800
x24788
1358B
Maria Breaks the Self-isolation
greedy
,
sortings
1000
x24577
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x24519
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x24499
1312B
Bogosort
constructive algorithms
,
sortings
1000
x24494
1041A
Heist
greedy
,
implementation
,
sortings
800
x24444
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24325
1607C
Minimum Extraction
brute force
,
sortings
1000
x24271
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24117
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24043
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24022
545D
Queue
greedy
,
implementation
,
sortings
1300
x23936
276C
Little Girl and Maximum Sum
data structures
,
greedy
,
implementation
,
sortings
1500
x23913
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x23837
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x23834
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x23614
1419D1
Sage's Birthday (easy version)
binary search
,
constructive algorithms
,
greedy
,
sortings
1000
x23542
37A
Towers
sortings
1000
x23520
1552A
Subsequence Permutation
sortings
,
strings
800
x23492
1206A
Choose Two Numbers
math
,
sortings
800
x23430
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23393
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x23074
1420A
Cubes Sorting
math
,
sortings
900
x22821
1557B
Moamen and k-subarrays
greedy
,
sortings
1100
x22777
1857C
Assembly via Minimums
greedy
,
sortings
1200
x22699
1873E
Building an Aquarium
binary search
,
sortings
1100
x22647
1849B
Monsters
greedy
,
math
,
sortings
1000
x22501
1730A
Planets
data structures
,
greedy
,
sortings
800
x22486
285C
Building Permutation
greedy
,
implementation
,
sortings
1200
x22415
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22398
1955B
Progressive Square
constructive algorithms
,
data structures
,
implementation
,
sortings
1000
x22265
1300B
Assigning to Classes
greedy
,
implementation
,
sortings
1000
x22182
1722D
Line
greedy
,
sortings
1100
x22158
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x22139
1637A
Sorting Parts
brute force
,
sortings
800
x22058
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x22008
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x21985
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x21937
1847A
The Man who became a God
greedy
,
sortings
800
x21628
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