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Before contest
Codeforces Round 941 (Div. 1)
10:33:06
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Before contest
Codeforces Round 941 (Div. 2)
10:33:06
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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
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implementation
interactive
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matrices
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number theory
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Custom test
Problems
#
Name
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197420
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77623
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70394
1399A
Remove Smallest
greedy
,
sortings
800
x62496
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56487
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55281
1760A
Medium Number
implementation
,
sortings
800
x53221
1850A
To My Critics
implementation
,
sortings
800
x50664
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47426
1360B
Honest Coach
greedy
,
sortings
800
x45928
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44903
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44106
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40112
1669B
Triple
implementation
,
sortings
800
x39658
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35055
1760C
Advantage
data structures
,
implementation
,
sortings
800
x34820
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
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31488
1220A
Cards
implementation
,
sortings
,
strings
800
x28784
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28672
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28524
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
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x27099
1792A
GamingForces
greedy
,
sortings
800
x27091
1487A
Arena
implementation
,
sortings
800
x26139
1092B
Teams Forming
sortings
800
x25596
1705A
Mark the Photographer
greedy
,
sortings
800
x24789
1041A
Heist
greedy
,
implementation
,
sortings
800
x24446
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24325
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24043
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24022
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
x23619
1552A
Subsequence Permutation
sortings
,
strings
800
x23493
1206A
Choose Two Numbers
math
,
sortings
800
x23431
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x23082
1730A
Planets
data structures
,
greedy
,
sortings
800
x22486
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22398
1637A
Sorting Parts
brute force
,
sortings
800
x22058
1847A
The Man who became a God
greedy
,
sortings
800
x21628
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x21554
1646B
Quality vs Quantity
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
800
x20845
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20733
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20705
1733A
Consecutive Sum
greedy
,
sortings
800
x20642
1836A
Destroyer
implementation
,
sortings
800
x19752
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x19583
1767B
Block Towers
data structures
,
greedy
,
sortings
800
x19552
1798A
Showstopper
greedy
,
implementation
,
sortings
800
x19313
1656A
Good Pairs
math
,
sortings
800
x19225
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x19146
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19102
984A
Game
sortings
800
x18874
1445A
Array Rearrangment
greedy
,
sortings
800
x18797
1654A
Maximum Cake Tastiness
brute force
,
greedy
,
implementation
,
sortings
800
x18401
1896A
Jagged Swaps
sortings
800
x18334
1891A
Sorting with Twos
constructive algorithms
,
sortings
800
x18306
1688B
Patchouli's Magical Talisman
bitmasks
,
constructive algorithms
,
greedy
,
sortings
800
x17836
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x17471
1930A
Maximise The Score
greedy
,
sortings
800
x16977
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x16778
1561A
Simply Strange Sort
brute force
,
implementation
,
sortings
800
x16440
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16362
1617A
Forbidden Subsequence
constructive algorithms
,
greedy
,
sortings
,
strings
800
x16080
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x15990
1670A
Prof. Slim
greedy
,
implementation
,
sortings
800
x15227
937A
Olympiad
implementation
,
sortings
800
x14814
1305A
Kuroni and the Gifts
brute force
,
constructive algorithms
,
greedy
,
sortings
800
x13767
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13531
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13319
992A
Nastya and an Array
implementation
,
sortings
800
x12885
169A
Chores
sortings
800
x6545
291A
Spyke Talks
*special problem
,
implementation
,
sortings
800
x5977
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5565
648B
Собери стол
constructive algorithms
,
sortings
800
x1199
160A
Twins
greedy
,
sortings
900
x110472
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94035
34B
Sale
greedy
,
sortings
900
x48415
149A
Business trip
greedy
,
implementation
,
sortings
900
x37600
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x32036
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29521
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x26066
1697B
Promo
greedy
,
sortings
900
x25402
1833B
Restore the Weather
greedy
,
sortings
900
x25300
1420A
Cubes Sorting
math
,
sortings
900
x22822
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x21986
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x21939
1272A
Three Friends
brute force
,
greedy
,
math
,
sortings
900
x20008
807A
Is it rated?
implementation
,
sortings
900
x19385
1665B
Array Cloning Technique
constructive algorithms
,
greedy
,
sortings
900
x18628
1501B
Napoleon Cake
dp
,
implementation
,
sortings
900
x18425
1216B
Shooting
greedy
,
implementation
,
sortings
900
x18028
1480B
The Great Hero
greedy
,
implementation
,
sortings
900
x16911
1427A
Avoiding Zero
math
,
sortings
900
x16818
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x16750
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