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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
39:19:21
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→ Filter Problems
Difficulty:
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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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Status
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Custom test
Problems
#
Name
1537D
Deleting Divisors
games
,
math
,
number theory
1700
x12508
1536F
Omkar and Akmar
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
fft
,
games
,
geometry
,
math
,
meet-in-the-middle
,
string suffix structures
2600
x964
1527B2
Palindrome Game (hard version)
constructive algorithms
,
games
1900
x7986
1527B1
Palindrome Game (easy version)
constructive algorithms
,
games
1200
x26466
1511G
Chips on a Board
bitmasks
,
brute force
,
data structures
,
dp
,
games
,
two pointers
2700
x803
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x7087
1498F
Christmas Game
bitmasks
,
data structures
,
dfs and similar
,
dp
,
games
,
math
,
trees
2500
x929
1495B
Let's Go Hiking
games
,
greedy
1900
x6049
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x25961
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x27712
1458E
Nim Shortcuts
data structures
,
games
3100
x497
1455C
Ping-pong
constructive algorithms
,
games
,
math
1100
x19662
1451F
Nullify The Matrix
constructive algorithms
,
games
2700
x993
1451D
Circle Game
games
,
geometry
,
math
1700
x9579
1442F
Differentiating Games
games
,
interactive
3400
x140
1439E
Cheat and Win
bitmasks
,
data structures
,
games
,
trees
3500
x222
1434E
A Convex Game
dsu
,
games
3500
x176
1431G
Number Deletion Game
*special problem
,
dp
,
games
,
greedy
2100
x189
1427H
Prison Break
binary search
,
games
,
geometry
,
ternary search
3500
x79
1425A
Arena of Greed
games
,
greedy
1400
x6614
1419A
Digit Game
games
,
greedy
,
implementation
900
x19630
1411G
No Game No Life
bitmasks
,
games
,
math
,
matrices
2700
x676
1404B
Tree Tag
dfs and similar
,
dp
,
games
,
trees
1900
x7451
1402C
Star Trek
*special problem
,
combinatorics
,
dfs and similar
,
dp
,
games
,
graphs
,
matrices
,
trees
2600
x205
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24731
1396B
Stoned Game
brute force
,
constructive algorithms
,
games
,
greedy
1800
x11489
1383B
GameGame
bitmasks
,
constructive algorithms
,
dp
,
games
,
greedy
,
math
1900
x5092
1382B
Sequential Nim
dp
,
games
1100
x24749
1375F
Integer Game
constructive algorithms
,
games
,
interactive
,
math
2600
x2270
1373B
01 Game
games
900
x36621
1372D
Omkar and Circle
brute force
,
dp
,
games
,
greedy
2100
x5417
1370C
Number Game
games
,
math
,
number theory
1400
x24768
1369F
BareLee
dfs and similar
,
dp
,
games
2700
x653
1368F
Lamps on a Circle
games
,
implementation
,
interactive
,
math
2600
x1051
1365A
Matrix Game
games
,
greedy
,
implementation
1100
x24184
1363C
Game On Leaves
games
,
trees
1600
x18929
1346H
Game with Segments
*special problem
,
data structures
,
games
2700
x50
1333D
Challenges in school №41
brute force
,
constructive algorithms
,
games
,
graphs
,
greedy
,
implementation
,
sortings
2100
x3949
1312F
Attack on Red Kingdom
games
,
two pointers
2500
x920
1270A
Card Game
games
,
greedy
,
math
800
x17034
1221E
Game With String
games
2500
x1097
1220C
Substring Game in the Lesson
games
,
greedy
,
strings
1300
x10294
1215D
Ticket Game
games
,
greedy
,
math
1700
x6205
1197F
Coloring Game
dp
,
games
,
matrices
2700
x261
1194D
1-2-K Game
games
,
math
1700
x6592
1190C
Tokitsukaze and Duel
brute force
,
games
,
greedy
2300
x2031
1190B
Tokitsukaze, CSL and Stone Game
games
1800
x6470
1155B
Game with Telephone Numbers
games
,
greedy
,
implementation
1200
x11934
1149E
Election Promises
games
,
graphs
3200
x531
1147F
Zigzag Game
games
,
interactive
3500
x265
1147C
Thanos Nim
games
2000
x3292
1110G
Tree-Tac-Toe
constructive algorithms
,
games
,
trees
3100
x625
1102C
Doors Breaking and Repairing
games
1200
x13150
1100D
Dasha and Chess
constructive algorithms
,
games
,
interactive
2500
x859
1099F
Cookies
binary search
,
data structures
,
dfs and similar
,
dp
,
games
,
trees
2400
x961
1091H
New Year and the Tricolore Recreation
games
3200
x430
1090G
Combostone
games
,
implementation
2500
x110
1076G
Array Game
data structures
,
games
3000
x592
1037G
A Game on Strings
games
3200
x310
1033G
Chip Game
games
3500
x387
1033C
Permutation Game
brute force
,
dp
,
games
1600
x5619
980C
Posterized
games
,
greedy
1700
x3801
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x47893
936B
Sleepy Game
dfs and similar
,
dp
,
games
,
graphs
2100
x3274
934A
A Compatible Pair
brute force
,
games
1400
x7018
930D
Game with Tokens
data structures
,
games
,
implementation
2500
x408
919F
A Game With Numbers
games
,
graphs
,
shortest paths
2600
x340
917B
MADMAX
dfs and similar
,
dp
,
games
,
graphs
1700
x3543
914H
Ember and Storm's Tree Game
combinatorics
,
dp
,
games
,
trees
3400
x240
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x8636
896B
Ithea Plays With Chtholly
binary search
,
constructive algorithms
,
games
,
greedy
,
interactive
2000
x2131
859C
Pie Rules
dp
,
games
1500
x5436
850C
Arpa and a game with Mojtaba
bitmasks
,
dp
,
games
2200
x1511
841B
Godsend
games
,
math
1100
x12312
838C
Future Failure
dp
,
games
2800
x295
832A
Sasha and Sticks
games
,
math
800
x20866
819A
Mister B and Boring Game
games
,
greedy
2200
x495
812E
Sagheer and Apple Tree
games
,
trees
2300
x1108
794E
Choosing Carrot
games
,
math
2800
x813
794C
Naming Company
games
,
greedy
,
sortings
1800
x3147
786A
Berzerk
dfs and similar
,
dp
,
games
2000
x2562
768E
Game of Stones
bitmasks
,
dp
,
games
2100
x2990
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x11339
731E
Funny Game
dp
,
games
2200
x1723
725F
Family Photos
games
,
greedy
2900
x540
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1444
705B
Spider Man
games
,
math
1100
x9178
630R
Game
games
,
math
1200
x8716
616B
Dinner with Emma
games
,
greedy
1000
x11992
603C
Lieges of Legendre
games
,
math
2200
x1892
594A
Warrior and Archer
games
2300
x1733
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x16197
549C
The Game Of Parity
games
2200
x1738
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x17706
536D
Tavas in Kansas
dp
,
games
2900
x734
533C
Board Game
games
,
greedy
,
implementation
,
math
1700
x2199
520D
Cubes
games
,
greedy
,
implementation
2100
x1564
494E
Sharti
data structures
,
games
3200
x321
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x9714
457F
An easy problem about trees
dp
,
games
,
greedy
,
trees
3200
x107
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