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Codeforces Round 937 (Div. 4)
04:46:03
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Difficulty:
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sortings
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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Problems
#
Name
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x194867
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x76773
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x69216
1399A
Remove Smallest
greedy
,
sortings
800
x61733
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x55937
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x54609
1760A
Medium Number
implementation
,
sortings
800
x52097
1850A
To My Critics
implementation
,
sortings
800
x49166
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47068
1360B
Honest Coach
greedy
,
sortings
800
x45476
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44193
1742B
Increasing
greedy
,
implementation
,
sortings
800
x43346
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x39341
1669B
Triple
implementation
,
sortings
800
x38957
1760C
Advantage
data structures
,
implementation
,
sortings
800
x34429
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x33956
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32644
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x32494
1692B
All Distinct
greedy
,
sortings
800
x32324
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31277
1220A
Cards
implementation
,
sortings
,
strings
800
x28637
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28403
1626A
Equidistant Letters
constructive algorithms
,
sortings
800
x28178
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x27937
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x27554
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x27347
1792A
GamingForces
greedy
,
sortings
800
x26948
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x26500
1487A
Arena
implementation
,
sortings
800
x26075
1092B
Teams Forming
sortings
800
x25244
1705A
Mark the Photographer
greedy
,
sortings
800
x24705
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24246
1041A
Heist
greedy
,
implementation
,
sortings
800
x24186
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x23968
1822B
Karina and Array
greedy
,
math
,
sortings
800
x23846
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x23768
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x23765
1552A
Subsequence Permutation
sortings
,
strings
800
x23432
1206A
Choose Two Numbers
math
,
sortings
800
x23368
1730A
Planets
data structures
,
greedy
,
sortings
800
x22370
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22244
1637A
Sorting Parts
brute force
,
sortings
800
x21990
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x21963
1847A
The Man who became a God
greedy
,
sortings
800
x21464
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x21348
1646B
Quality vs Quantity
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
800
x20768
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20654
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20577
1733A
Consecutive Sum
greedy
,
sortings
800
x20546
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x19647
1836A
Destroyer
implementation
,
sortings
800
x19593
1767B
Block Towers
data structures
,
greedy
,
sortings
800
x19484
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x19389
1798A
Showstopper
greedy
,
implementation
,
sortings
800
x19235
1656A
Good Pairs
math
,
sortings
800
x19150
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19072
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x19025
1445A
Array Rearrangment
greedy
,
sortings
800
x18783
984A
Game
sortings
800
x18663
1654A
Maximum Cake Tastiness
brute force
,
greedy
,
implementation
,
sortings
800
x18351
1891A
Sorting with Twos
constructive algorithms
,
sortings
800
x18140
1688B
Patchouli's Magical Talisman
bitmasks
,
constructive algorithms
,
greedy
,
sortings
800
x17770
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x17435
1896A
Jagged Swaps
sortings
800
x16907
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x16657
1561A
Simply Strange Sort
brute force
,
implementation
,
sortings
800
x16417
1930A
Maximise The Score
greedy
,
sortings
800
x16343
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16313
1617A
Forbidden Subsequence
constructive algorithms
,
greedy
,
sortings
,
strings
800
x16053
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x15942
1670A
Prof. Slim
greedy
,
implementation
,
sortings
800
x15178
937A
Olympiad
implementation
,
sortings
800
x14608
1305A
Kuroni and the Gifts
brute force
,
constructive algorithms
,
greedy
,
sortings
800
x13699
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13446
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13267
992A
Nastya and an Array
implementation
,
sortings
800
x12823
169A
Chores
sortings
800
x6501
291A
Spyke Talks
*special problem
,
implementation
,
sortings
800
x5953
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5543
648B
Собери стол
constructive algorithms
,
sortings
800
x1162
160A
Twins
greedy
,
sortings
900
x109257
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x92798
34B
Sale
greedy
,
sortings
900
x47764
149A
Business trip
greedy
,
implementation
,
sortings
900
x37192
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x30972
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29348
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x25827
1697B
Promo
greedy
,
sortings
900
x25179
1833B
Restore the Weather
greedy
,
sortings
900
x25086
1420A
Cubes Sorting
math
,
sortings
900
x22713
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x21802
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x21503
1272A
Three Friends
brute force
,
greedy
,
math
,
sortings
900
x19861
807A
Is it rated?
implementation
,
sortings
900
x19181
1501B
Napoleon Cake
dp
,
implementation
,
sortings
900
x18338
1665B
Array Cloning Technique
constructive algorithms
,
greedy
,
sortings
900
x18253
1216B
Shooting
greedy
,
implementation
,
sortings
900
x17945
1480B
The Great Hero
greedy
,
implementation
,
sortings
900
x16866
1427A
Avoiding Zero
math
,
sortings
900
x16758
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x16561
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