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Before contest
Codeforces Round 941 (Div. 1)
22:05:10
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*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
22:05:10
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greedy
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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sortings
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strings
ternary search
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Name
1332C
K-Complete Word
dfs and similar
,
dsu
,
greedy
,
implementation
,
strings
1500
x15570
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x15745
1400C
Binary String Reconstruction
2-sat
,
brute force
,
constructive algorithms
,
greedy
1500
x16710
1201B
Zero Array
greedy
,
math
1500
x17626
1399D
Binary String To Subsequences
constructive algorithms
,
data structures
,
greedy
,
implementation
1500
x17631
1516B
AGAGA XOOORRR
bitmasks
,
brute force
,
dp
,
greedy
1500
x18009
1418C
Mortal Kombat Tower
dp
,
graphs
,
greedy
,
shortest paths
1500
x18079
1389C
Good String
brute force
,
dp
,
greedy
,
two pointers
1500
x18319
1409D
Decrease the Sum of Digits
greedy
,
math
1500
x18639
1368B
Codeforces Subsequences
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1500
x18989
1526C1
Potions (Easy Version)
brute force
,
data structures
,
dp
,
greedy
1500
x21116
1338A
Powered Addition
greedy
,
math
1500
x22560
276C
Little Girl and Maximum Sum
data structures
,
greedy
,
implementation
,
sortings
1500
x23910
545C
Woodcutters
dp
,
greedy
1500
x26158
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x36159
1346B
Boot Camp
*special problem
,
greedy
1400
x1179
174B
File List
dp
,
greedy
,
implementation
1400
x2188
45I
TCMCF+++
greedy
1400
x2300
413C
Jeopardy!
greedy
,
math
1400
x2301
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2453
523C
Name Quest
*special problem
,
greedy
1400
x2466
929A
Прокат велосипедов
*special problem
,
greedy
,
implementation
1400
x2491
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2505
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2742
1046C
Space Formula
greedy
1400
x3033
245E
Mishap in Club
greedy
,
implementation
1400
x3219
120F
Spiders
dp
,
greedy
,
trees
1400
x3502
270B
Multithreading
data structures
,
greedy
,
implementation
1400
x4071
526B
Om Nom and Dark Park
dfs and similar
,
greedy
,
implementation
1400
x4465
111A
Petya and Inequiations
greedy
1400
x4617
1773E
Easy Assembly
greedy
,
sortings
1400
x4633
261A
Maxim and Discounts
greedy
,
sortings
1400
x5086
313C
Ilya and Matrix
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x5515
994B
Knights of a Polygonal Table
greedy
,
implementation
,
sortings
1400
x5521
203C
Photographer
greedy
,
sortings
1400
x5567
1162B
Double Matrix
brute force
,
greedy
1400
x5759
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x5930
808C
Tea Party
constructive algorithms
,
greedy
,
sortings
1400
x5953
472C
Design Tutorial: Make It Nondeterministic
greedy
1400
x6313
1425A
Arena of Greed
games
,
greedy
1400
x6344
379C
New Year Ratings Change
greedy
,
sortings
1400
x6492
435B
Pasha Maximizes
greedy
1400
x6739
441B
Valera and Fruits
greedy
,
implementation
1400
x6925
995B
Suit and Tie
greedy
,
implementation
,
math
1400
x7008
1061B
Views Matter
greedy
,
implementation
,
sortings
1400
x7213
762B
USB vs. PS/2
greedy
,
implementation
,
sortings
,
two pointers
1400
x7456
479B
Towers
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x7541
518B
Tanya and Postcard
greedy
,
implementation
,
strings
1400
x7792
1088C
Ehab and a 2-operation task
constructive algorithms
,
greedy
,
math
1400
x7930
604B
More Cowbell
binary search
,
greedy
1400
x8233
548B
Mike and Fun
brute force
,
dp
,
greedy
,
implementation
1400
x8264
1097C
Yuhao and a Parenthesis
greedy
,
implementation
1400
x8327
719B
Anatoly and Cockroaches
greedy
1400
x8332
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x8545
416A
Guess a number!
greedy
,
implementation
,
two pointers
1400
x8634
940B
Our Tanya is Crying Out Loud
dp
,
greedy
1400
x8811
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x8895
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x8982
1764C
Doremy's City Construction
graphs
,
greedy
1400
x9032
1951C
Ticket Hoarding
greedy
,
math
,
sortings
1400
x9044
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x9062
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9076
1761C
Set Construction
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1400
x9142
525B
Pasha and String
constructive algorithms
,
greedy
,
math
,
strings
1400
x9172
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9346
1131B
Draw!
greedy
,
implementation
1400
x9467
804B
Minimum number of steps
combinatorics
,
greedy
,
implementation
,
math
1400
x9512
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9542
1932D
Card Game
greedy
,
implementation
1400
x9719
1408B
Arrays Sum
constructive algorithms
,
greedy
,
math
1400
x9750
757B
Bash's Big Day
greedy
,
math
,
number theory
1400
x9791
534B
Covered Path
dp
,
greedy
,
math
1400
x9837
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x9871
1009B
Minimum Ternary String
greedy
,
implementation
1400
x9887
1144D
Equalize Them All
constructive algorithms
,
greedy
1400
x9906
797B
Odd sum
dp
,
greedy
,
implementation
1400
x10135
1102B
Array K-Coloring
greedy
,
sortings
1400
x10140
1903C
Theofanis' Nightmare
constructive algorithms
,
greedy
1400
x10274
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x10531
1110B
Tape
greedy
,
sortings
1400
x10585
1901C
Add, Divide and Floor
constructive algorithms
,
greedy
,
math
1400
x10601
1427B
Chess Cheater
greedy
,
implementation
,
sortings
1400
x10682
1251B
Binary Palindromes
greedy
,
strings
1400
x10719
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x10728
1824A
LuoTianyi and the Show
greedy
,
implementation
1400
x10761
1253B
Silly Mistake
greedy
,
implementation
1400
x10901
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x10919
1905C
Largest Subsequence
greedy
,
strings
1400
x10958
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x11056
1263B
PIN Codes
greedy
,
implementation
1400
x11115
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x11139
1282B1
K for the Price of One (Easy Version)
dp
,
greedy
,
sortings
1400
x11162
1696C
Fishingprince Plays With Array
constructive algorithms
,
greedy
,
implementation
,
math
1400
x11295
388A
Fox and Box Accumulation
greedy
,
sortings
1400
x11326
1844D
Row Major
constructive algorithms
,
greedy
,
math
,
number theory
,
strings
1400
x11577
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x12000
1276A
As Simple as One and Two
dp
,
greedy
1400
x12027
445B
DZY Loves Chemistry
dfs and similar
,
dsu
,
greedy
1400
x12069
1800E1
Unforgivable Curse (easy version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
strings
1400
x12096
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12172
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