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Before contest
Kotlin Heroes: Practice 6
24:13:54
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Before contest
Educational Codeforces Round 105 (Rated for Div. 2)
25:13:54
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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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Custom test
Problems
#
Name
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x23052
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x19334
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x17761
832A
Sasha and Sticks
games
,
math
800
x15242
1270A
Card Game
games
,
greedy
,
math
800
x14299
1373B
01 Game
games
900
x20237
1419A
Digit Game
games
,
greedy
,
implementation
900
x14813
616B
Dinner with Emma
games
,
greedy
1000
x7779
1365A
Matrix Game
games
,
greedy
,
implementation
1100
x18450
1382B
Sequential Nim
dp
,
games
1100
x17549
1455C
Ping-pong
constructive algorithms
,
games
,
math
1100
x13865
841B
Godsend
games
,
math
1100
x9316
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x7495
705B
Spider Man
games
,
math
1100
x7321
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x14200
1102C
Doors Breaking and Repairing
games
1200
x9579
1155B
Game with Telephone Numbers
games
,
greedy
,
implementation
1200
x8625
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x6967
630R
Game
games
,
math
1200
x5770
276B
Little Girl and Game
games
,
greedy
1300
x14309
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x12045
1220C
Substring Game in the Lesson
games
,
greedy
,
strings
1300
x7578
257B
Playing Cubes
games
,
greedy
,
implementation
1300
x4739
1370C
Number Game
games
,
math
,
number theory
1400
x14987
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x11682
934A
A Compatible Pair
brute force
,
games
1400
x5539
150A
Win or Freeze
games
,
math
,
number theory
1400
x5344
1425A
Arena of Greed
games
,
greedy
1400
x3355
120E
Put Knight!
games
,
math
1400
x2083
859C
Pie Rules
dp
,
games
1500
x3787
293A
Weird Game
games
,
greedy
1500
x2081
74B
Train
dp
,
games
,
greedy
1500
x1201
1363C
Game On Leaves
games
,
trees
1600
x11660
346A
Alice and Bob
games
,
math
,
number theory
1600
x6326
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x4152
1033C
Permutation Game
brute force
,
dp
,
games
1600
x3954
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x7357
1451D
Circle Game
games
,
geometry
,
math
1700
x6494
1194D
1-2-K Game
games
,
math
1700
x4773
1215D
Ticket Game
games
,
greedy
,
math
1700
x4634
980C
Posterized
games
,
greedy
1700
x3260
917B
MADMAX
dfs and similar
,
dp
,
games
,
graphs
1700
x2738
533C
Board Game
games
,
greedy
,
implementation
,
math
1700
x1815
1396B
Stoned Game
brute force
,
constructive algorithms
,
games
,
greedy
1800
x7376
1190B
Tokitsukaze, CSL and Stone Game
games
1800
x4910
3C
Tic-tac-toe
brute force
,
games
,
implementation
1800
x4591
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x4003
794C
Naming Company
games
,
greedy
,
sortings
1800
x2593
1404B
Tree Tag
dfs and similar
,
dp
,
games
,
trees
1900
x5172
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
1900
x3877
1383B
GameGame
bitmasks
,
constructive algorithms
,
dp
,
games
,
greedy
,
math
1900
x3518
55C
Pie or die
games
1900
x1116
279E
Beautiful Decomposition
dp
,
games
,
greedy
,
number theory
1900
x1112
135C
Zero-One
constructive algorithms
,
games
,
greedy
1900
x1112
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1040
69D
Dot
dp
,
games
1900
x634
388C
Fox and Card Game
games
,
greedy
,
sortings
2000
x2212
1147C
Thanos Nim
games
2000
x1991
786A
Berzerk
dfs and similar
,
dp
,
games
2000
x1770
896B
Ithea Plays With Chtholly
binary search
,
constructive algorithms
,
games
,
greedy
,
interactive
2000
x1589
15C
Industrial Nim
games
2000
x1516
78C
Beaver Game
dp
,
games
,
number theory
2000
x1293
87C
Interesting Game
dp
,
games
,
math
2000
x1083
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x631
63E
Sweets Game
bitmasks
,
dfs and similar
,
dp
,
games
,
implementation
2000
x513
1372D
Omkar and Circle
brute force
,
dp
,
games
,
greedy
2100
x4148
1333D
Challenges in school №41
brute force
,
constructive algorithms
,
games
,
graphs
,
greedy
,
implementation
,
sortings
2100
x3126
936B
Sleepy Game
dfs and similar
,
dp
,
games
,
graphs
2100
x2407
768E
Game of Stones
bitmasks
,
dp
,
games
2100
x1893
520D
Cubes
games
,
greedy
,
implementation
2100
x1395
282D
Yet Another Number Game
dp
,
games
2100
x1060
335C
More Reclamation
games
2100
x406
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x385
38F
Smart Boy
dp
,
games
,
strings
2100
x273
1431G
Number Deletion Game
*special problem
,
dp
,
games
,
greedy
2100
x101
603C
Lieges of Legendre
games
,
math
2200
x1525
549C
The Game Of Parity
games
2200
x1518
731E
Funny Game
dp
,
games
2200
x1024
850C
Arpa and a game with Mojtaba
bitmasks
,
dp
,
games
2200
x936
377C
Captains Mode
bitmasks
,
dp
,
games
2200
x890
255E
Furlo and Rublo and Game
games
,
implementation
,
math
2200
x716
819A
Mister B and Boring Game
games
,
greedy
2200
x240
1190C
Tokitsukaze and Duel
brute force
,
games
,
greedy
2300
x1340
594A
Warrior and Archer
games
2300
x1211
812E
Sagheer and Apple Tree
games
,
trees
2300
x793
317D
Game with Powers
dp
,
games
2300
x790
305E
Playing with String
games
2300
x498
167C
Wizards and Numbers
games
,
math
2300
x480
36D
New Game with a Chess Piece
games
2300
x448
1099F
Cookies
binary search
,
data structures
,
dfs and similar
,
dp
,
games
,
trees
2400
x633
277C
Game
games
,
implementation
2400
x400
354B
Game with Strings
bitmasks
,
dp
,
games
2400
x360
154D
Flatland Fencing
games
,
math
2400
x351
1221E
Game With String
games
2500
x784
1100D
Dasha and Chess
constructive algorithms
,
games
,
interactive
2500
x649
1312F
Attack on Red Kingdom
games
,
two pointers
2500
x474
138D
World of Darkraft
dp
,
games
2500
x350
930D
Game with Tokens
data structures
,
games
,
implementation
2500
x295
1090G
Combostone
games
,
implementation
2500
x50
1375F
Integer Game
constructive algorithms
,
games
,
interactive
,
math
2600
x1393
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