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Codeforces Round (Div. 4)
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games
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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Custom test
Problems
#
Name
1899A
Game with Integers
games
,
math
,
number theory
800
x52435
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x49215
1858A
Buttons
games
,
greedy
,
math
800
x42216
1373B
01 Game
games
900
x38245
1919A
Wallet Exchange
games
,
math
800
x34206
276B
Little Girl and Game
games
,
greedy
1300
x29344
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x28126
2055A
Two Frogs
constructive algorithms
,
games
,
greedy
,
math
800
x28098
1527B1
Palindrome Game (easy version)
constructive algorithms
,
games
1200
x27291
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x26166
2003B
Turtle and Piggy Are Playing a Game 2
games
,
greedy
,
sortings
800
x25862
1719A
Chip Game
games
,
math
800
x25821
1370C
Number Game
games
,
math
,
number theory
1400
x25139
1841A
Game with Board
constructive algorithms
,
games
800
x25059
1844A
Subtraction Game
constructive algorithms
,
games
800
x24950
1382B
Sequential Nim
dp
,
games
1100
x24932
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24863
1365A
Matrix Game
games
,
greedy
,
implementation
1100
x24324
2004C
Splitting Items
games
,
greedy
,
sortings
1100
x24240
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x24140
1990A
Submission Bait
brute force
,
games
,
greedy
,
sortings
900
x23784
2060C
Game of Mathletes
games
,
greedy
,
sortings
,
two pointers
900
x23092
1972B
Coin Games
games
900
x22704
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x22382
1956B
Nene and the Card Game
games
,
greedy
800
x21886
1747C
Swap Game
games
1200
x21757
1920B
Summation Game
games
,
greedy
,
math
,
sortings
1100
x21492
2040A
Game of Division
games
,
math
800
x21419
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x21331
1681A
Game with Cards
games
,
greedy
800
x21143
832A
Sasha and Sticks
games
,
math
800
x21112
1842A
Tenzing and Tsondu
games
,
math
800
x20051
2002B
Removals Game
constructive algorithms
,
games
1000
x20021
1455C
Ping-pong
constructive algorithms
,
games
,
math
1100
x19778
1419A
Digit Game
games
,
greedy
,
implementation
900
x19738
1363C
Game On Leaves
games
,
trees
1600
x19248
1943A
MEX Game 1
games
,
greedy
1300
x18841
1695B
Circle Game
games
,
greedy
1000
x18837
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18593
1916C
Training Before the Olympiad
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1200
x18544
1966A
Card Exchange
constructive algorithms
,
games
,
greedy
800
x18434
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x17948
1874A
Jellyfish and Game
brute force
,
games
,
greedy
,
implementation
1200
x17661
2030C
A TRUE Battle
brute force
,
games
,
greedy
1100
x17324
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x17324
1848A
Vika and Her Friends
games
,
math
900
x17202
1270A
Card Game
games
,
greedy
,
math
800
x17154
1627B
Not Sitting
games
,
greedy
,
sortings
1300
x16859
1695A
Subrectangle Guess
games
800
x16456
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x16303
1672A
Log Chopping
games
,
implementation
,
math
800
x16276
2042B
Game with Colored Marbles
games
,
greedy
900
x15769
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x15574
1968D
Permutation Game
brute force
,
dfs and similar
,
games
,
graphs
,
greedy
,
math
1300
x15527
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x14480
1965A
Everything Nim
games
,
greedy
,
math
,
sortings
1400
x14461
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x13931
1834C
Game with Reversing
games
,
greedy
,
math
,
strings
1200
x13787
1102C
Doors Breaking and Repairing
games
1200
x13265
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x13074
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x12810
1537D
Deleting Divisors
games
,
math
,
number theory
1700
x12689
841B
Godsend
games
,
math
1100
x12430
616B
Dinner with Emma
games
,
greedy
1000
x12159
1155B
Game with Telephone Numbers
games
,
greedy
,
implementation
1200
x11999
1396B
Stoned Game
brute force
,
constructive algorithms
,
games
,
greedy
1800
x11634
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x11608
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x11605
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x11494
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x11388
1220C
Substring Game in the Lesson
games
,
greedy
,
strings
1300
x10380
1921E
Eat the Chip
brute force
,
games
,
greedy
,
math
1600
x10208
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x9778
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x9735
1451D
Circle Game
games
,
geometry
,
math
1700
x9671
1739C
Card Game
combinatorics
,
constructive algorithms
,
dp
,
games
1500
x9338
705B
Spider Man
games
,
math
1100
x9227
630R
Game
games
,
math
1200
x8862
346A
Alice and Bob
games
,
math
,
number theory
1600
x8807
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x8695
1527B2
Palindrome Game (hard version)
constructive algorithms
,
games
1900
x8101
150A
Win or Freeze
games
,
math
,
number theory
1400
x8001
1873H
Mad City
dfs and similar
,
dsu
,
games
,
graphs
,
shortest paths
,
trees
1700
x7902
1404B
Tree Tag
dfs and similar
,
dp
,
games
,
trees
1900
x7573
3C
Tic-tac-toe
brute force
,
games
,
implementation
1800
x7514
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x7485
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x7483
1987D
World is Mine
dp
,
games
1800
x7473
1955F
Unfair Game
dp
,
games
,
greedy
,
math
,
schedules
1800
x7457
257B
Playing Cubes
games
,
greedy
,
implementation
1300
x7291
2006A
Iris and Game on the Tree
constructive algorithms
,
dfs and similar
,
games
,
graphs
,
greedy
,
trees
1700
x7168
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x7126
934A
A Compatible Pair
brute force
,
games
1400
x7082
1772E
Permutation Game
games
1700
x6972
1425A
Arena of Greed
games
,
greedy
1400
x6681
1194D
1-2-K Game
games
,
math
1700
x6657
1190B
Tokitsukaze, CSL and Stone Game
games
1800
x6514
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6448
1215D
Ticket Game
games
,
greedy
,
math
1700
x6241
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
1900
x6102
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