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Before contest
Codeforces Round 941 (Div. 1)
29:18:37
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*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
29:18:37
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→ Filter Problems
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games
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
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
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x43914
1899A
Game with Integers
games
,
math
,
number theory
800
x37239
1858A
Buttons
games
,
greedy
,
math
800
x33936
1373B
01 Game
games
900
x32651
1919A
Wallet Exchange
games
,
math
800
x31568
276B
Little Girl and Game
games
,
greedy
1300
x27141
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x25998
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x25400
1719A
Chip Game
games
,
math
800
x24968
1841A
Game with Board
constructive algorithms
,
games
800
x24167
1527B1
Palindrome Game (easy version)
constructive algorithms
,
games
1200
x24096
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24041
1382B
Sequential Nim
dp
,
games
1100
x23849
1844A
Subtraction Game
constructive algorithms
,
games
800
x23796
1365A
Matrix Game
games
,
greedy
,
implementation
1100
x23532
1370C
Number Game
games
,
math
,
number theory
1400
x23480
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23444
1681A
Game with Cards
games
,
greedy
800
x20703
832A
Sasha and Sticks
games
,
math
800
x20317
1747C
Swap Game
games
1200
x20248
1842A
Tenzing and Tsondu
games
,
math
800
x19415
1419A
Digit Game
games
,
greedy
,
implementation
900
x19240
1455C
Ping-pong
constructive algorithms
,
games
,
math
1100
x19205
1920B
Summation Game
games
,
greedy
,
math
,
sortings
1100
x19116
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18205
1695B
Circle Game
games
,
greedy
1000
x17975
1363C
Game On Leaves
games
,
trees
1600
x17779
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x17618
1956B
Nene and the Card Game
games
,
greedy
800
x17468
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x17032
1270A
Card Game
games
,
greedy
,
math
800
x16607
1916C
Training Before the Olympiad
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1200
x16560
1627B
Not Sitting
games
,
greedy
,
sortings
1300
x16242
1848A
Vika and Her Friends
games
,
math
900
x16169
1695A
Subrectangle Guess
games
800
x16095
1672A
Log Chopping
games
,
implementation
,
math
800
x15828
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x15726
1874A
Jellyfish and Game
brute force
,
games
,
greedy
,
implementation
1200
x15698
1943A
MEX Game 1
games
,
greedy
1300
x14837
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13252
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x13107
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x13068
1102C
Doors Breaking and Repairing
games
1200
x12739
1834C
Game with Reversing
games
,
greedy
,
math
,
strings
1200
x12576
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12340
841B
Godsend
games
,
math
1100
x11947
1537D
Deleting Divisors
games
,
math
,
number theory
1700
x11820
1155B
Game with Telephone Numbers
games
,
greedy
,
implementation
1200
x11707
616B
Dinner with Emma
games
,
greedy
1000
x11254
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x11132
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x11050
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x10906
1396B
Stoned Game
brute force
,
constructive algorithms
,
games
,
greedy
1800
x10847
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x10527
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x10498
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x10494
1220C
Substring Game in the Lesson
games
,
greedy
,
strings
1300
x9889
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x9479
1451D
Circle Game
games
,
geometry
,
math
1700
x9240
705B
Spider Man
games
,
math
1100
x9028
1921E
Eat the Chip
brute force
,
games
,
greedy
,
math
1600
x8818
1739C
Card Game
combinatorics
,
constructive algorithms
,
dp
,
games
1500
x8683
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x8491
346A
Alice and Bob
games
,
math
,
number theory
1600
x8441
630R
Game
games
,
math
1200
x8284
150A
Win or Freeze
games
,
math
,
number theory
1400
x7559
1527B2
Palindrome Game (hard version)
constructive algorithms
,
games
1900
x7517
1404B
Tree Tag
dfs and similar
,
dp
,
games
,
trees
1900
x7069
257B
Playing Cubes
games
,
greedy
,
implementation
1300
x6851
3C
Tic-tac-toe
brute force
,
games
,
implementation
1800
x6849
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x6831
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x6821
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x6736
934A
A Compatible Pair
brute force
,
games
1400
x6699
1873H
Mad City
dfs and similar
,
dsu
,
games
,
graphs
,
shortest paths
,
trees
1700
x6515
1772E
Permutation Game
games
1700
x6363
1425A
Arena of Greed
games
,
greedy
1400
x6332
1194D
1-2-K Game
games
,
math
1700
x6185
1190B
Tokitsukaze, CSL and Stone Game
games
1800
x6174
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6027
1215D
Ticket Game
games
,
greedy
,
math
1700
x5964
1495B
Let's Go Hiking
games
,
greedy
1900
x5832
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
1900
x5641
1737C
Ela and Crickets
constructive algorithms
,
games
,
implementation
,
math
1500
x5547
1955F
Unfair Game
dp
,
games
,
greedy
,
math
,
schedules
1800
x5404
1033C
Permutation Game
brute force
,
dp
,
games
1600
x5367
1372D
Omkar and Circle
brute force
,
dp
,
games
,
greedy
2100
x5285
859C
Pie Rules
dp
,
games
1500
x5235
1383B
GameGame
bitmasks
,
constructive algorithms
,
dp
,
games
,
greedy
,
math
1900
x4753
980C
Posterized
games
,
greedy
1700
x3720
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x3677
1770D
Koxia and Game
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
flows
,
games
,
graph matchings
,
graphs
,
implementation
2000
x3654
1333D
Challenges in school №41
brute force
,
constructive algorithms
,
games
,
graphs
,
greedy
,
implementation
,
sortings
2100
x3630
917B
MADMAX
dfs and similar
,
dp
,
games
,
graphs
1700
x3477
388C
Fox and Card Game
games
,
greedy
,
sortings
2000
x3075
1147C
Thanos Nim
games
2000
x3046
936B
Sleepy Game
dfs and similar
,
dp
,
games
,
graphs
2100
x3028
794C
Naming Company
games
,
greedy
,
sortings
1800
x3019
1628D1
Game on Sum (Easy Version)
combinatorics
,
dp
,
games
,
math
2100
x3006
1605D
Treelabeling
bitmasks
,
constructive algorithms
,
dfs and similar
,
games
,
greedy
,
implementation
,
trees
2100
x2832
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