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Before contest
Codeforces Round 941 (Div. 1)
09:06:56
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Before contest
Codeforces Round 941 (Div. 2)
09:06:56
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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
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matrices
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number theory
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Problems
#
Name
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197421
160A
Twins
greedy
,
sortings
900
x110474
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94040
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77624
230A
Dragons
greedy
,
sortings
1000
x74053
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70901
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70395
1399A
Remove Smallest
greedy
,
sortings
800
x62496
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56488
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55281
1760A
Medium Number
implementation
,
sortings
800
x53221
1850A
To My Critics
implementation
,
sortings
800
x50666
34B
Sale
greedy
,
sortings
900
x48415
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47426
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46346
1360B
Honest Coach
greedy
,
sortings
800
x45930
456A
Laptops
sortings
1100
x45220
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44904
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44106
451B
Sort the Array
implementation
,
sortings
1300
x42903
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40113
1669B
Triple
implementation
,
sortings
800
x39659
459B
Pashmak and Flowers
combinatorics
,
implementation
,
sortings
1300
x38374
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x37609
149A
Business trip
greedy
,
implementation
,
sortings
900
x37600
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x36181
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35057
1760C
Advantage
data structures
,
implementation
,
sortings
800
x34821
1335C
Two Teams Composing
binary search
,
greedy
,
implementation
,
sortings
1100
x33184
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x32862
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32805
1692B
All Distinct
greedy
,
sortings
800
x32652
977C
Less or Equal
sortings
1200
x32191
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x32038
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
x31009
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29521
1220A
Cards
implementation
,
sortings
,
strings
800
x28784
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28673
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28524
479C
Exams
greedy
,
sortings
1400
x28466
1626A
Equidistant Letters
constructive algorithms
,
sortings
800
x28304
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x27964
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
x27296
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x27100
1792A
GamingForces
greedy
,
sortings
800
x27091
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x26624
1487A
Arena
implementation
,
sortings
800
x26139
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x26066
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x26003
1092B
Teams Forming
sortings
800
x25596
1339B
Sorted Adjacent Differences
constructive algorithms
,
sortings
1200
x25514
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x25415
1697B
Promo
greedy
,
sortings
900
x25402
1833B
Restore the Weather
greedy
,
sortings
900
x25301
1334B
Middle Class
greedy
,
sortings
1100
x25132
515C
Drazil and Factorial
greedy
,
math
,
sortings
1400
x24894
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x24835
1355B
Young Explorers
dp
,
greedy
,
sortings
1200
x24830
1705A
Mark the Photographer
greedy
,
sortings
800
x24789
1358B
Maria Breaks the Self-isolation
greedy
,
sortings
1000
x24577
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x24522
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x24501
1312B
Bogosort
constructive algorithms
,
sortings
1000
x24497
1041A
Heist
greedy
,
implementation
,
sortings
800
x24446
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24325
1607C
Minimum Extraction
brute force
,
sortings
1000
x24273
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24118
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24043
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24022
545D
Queue
greedy
,
implementation
,
sortings
1300
x23940
276C
Little Girl and Maximum Sum
data structures
,
greedy
,
implementation
,
sortings
1500
x23915
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x23838
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x23836
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x23622
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
x23494
1206A
Choose Two Numbers
math
,
sortings
800
x23431
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23393
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x23087
1420A
Cubes Sorting
math
,
sortings
900
x22822
1557B
Moamen and k-subarrays
greedy
,
sortings
1100
x22778
1857C
Assembly via Minimums
greedy
,
sortings
1200
x22705
1873E
Building an Aquarium
binary search
,
sortings
1100
x22653
1849B
Monsters
greedy
,
math
,
sortings
1000
x22503
1730A
Planets
data structures
,
greedy
,
sortings
800
x22486
285C
Building Permutation
greedy
,
implementation
,
sortings
1200
x22417
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22399
1955B
Progressive Square
constructive algorithms
,
data structures
,
implementation
,
sortings
1000
x22295
1300B
Assigning to Classes
greedy
,
implementation
,
sortings
1000
x22182
1722D
Line
greedy
,
sortings
1100
x22158
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x22141
1637A
Sorting Parts
brute force
,
sortings
800
x22058
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x22009
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x21987
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x21939
1847A
The Man who became a God
greedy
,
sortings
800
x21628
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