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Before contest
Codeforces Round 946 (Div. 3)
28:46:50
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Difficulty:
—
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
794C
Naming Company
games
,
greedy
,
sortings
1800
x3039
936B
Sleepy Game
dfs and similar
,
dp
,
games
,
graphs
2100
x3031
1628D1
Game on Sum (Easy Version)
combinatorics
,
dp
,
games
,
math
2100
x3023
1605D
Treelabeling
bitmasks
,
constructive algorithms
,
dfs and similar
,
games
,
greedy
,
implementation
,
trees
2100
x2842
293A
Weird Game
games
,
greedy
1500
x2814
768E
Game of Stones
bitmasks
,
dp
,
games
2100
x2648
120E
Put Knight!
games
,
math
1400
x2648
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2469
786A
Berzerk
dfs and similar
,
dp
,
games
2000
x2307
15C
Industrial Nim
games
2000
x2164
533C
Board Game
games
,
greedy
,
implementation
,
math
1700
x2147
896B
Ithea Plays With Chtholly
binary search
,
constructive algorithms
,
games
,
greedy
,
interactive
2000
x2052
1628D2
Game on Sum (Hard Version)
combinatorics
,
dp
,
games
,
math
2400
x1985
1375F
Integer Game
constructive algorithms
,
games
,
interactive
,
math
2600
x1932
1600E
Array Game
games
,
greedy
,
two pointers
1900
x1931
1190C
Tokitsukaze and Duel
brute force
,
games
,
greedy
2300
x1891
603C
Lieges of Legendre
games
,
math
2200
x1808
78C
Beaver Game
dp
,
games
,
number theory
2000
x1804
549C
The Game Of Parity
games
2200
x1717
594A
Warrior and Archer
games
2300
x1694
55C
Pie or die
games
1900
x1584
1970C1
Game on Tree (Easy)
games
1400
x1558
520D
Cubes
games
,
greedy
,
implementation
2100
x1533
74B
Train
dp
,
games
,
greedy
1500
x1492
1895E
Infinite Card Game
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
games
,
graphs
,
greedy
,
sortings
,
two pointers
2300
x1461
1942E
Farm Game
combinatorics
,
games
2300
x1456
279E
Beautiful Decomposition
dp
,
games
,
greedy
,
number theory
1900
x1410
1615E
Purple Crayon
data structures
,
dfs and similar
,
games
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1406
731E
Funny Game
dp
,
games
2200
x1390
282D
Yet Another Number Game
dp
,
games
2100
x1381
850C
Arpa and a game with Mojtaba
bitmasks
,
dp
,
games
2200
x1377
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1374
135C
Zero-One
constructive algorithms
,
games
,
greedy
1900
x1322
87C
Interesting Game
dp
,
games
,
math
2000
x1309
1584E
Game with Stones
binary search
,
data structures
,
games
,
greedy
2300
x1221
1970C2
Game on Tree (Medium)
dfs and similar
,
dp
,
games
,
trees
1700
x1216
1934D2
XOR Break --- Game Version
bitmasks
,
games
,
greedy
,
interactive
2400
x1206
1823E
Removing Graph
brute force
,
dp
,
games
,
graphs
,
math
2500
x1199
377C
Captains Mode
bitmasks
,
dp
,
games
2200
x1106
1658E
Gojou and Matrix Game
data structures
,
dp
,
games
,
hashing
,
implementation
,
math
,
number theory
,
sortings
2500
x1022
1221E
Game With String
games
2500
x1021
812E
Sagheer and Apple Tree
games
,
trees
2300
x1018
317D
Game with Powers
dp
,
games
2300
x975
1704F
Colouring Game
constructive algorithms
,
dp
,
games
2600
x937
69D
Dot
dp
,
games
1900
x935
1536F
Omkar and Akmar
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
fft
,
games
,
geometry
,
math
,
meet-in-the-middle
,
string suffix structures
2600
x913
1099F
Cookies
binary search
,
data structures
,
dfs and similar
,
dp
,
games
,
trees
2400
x907
1451F
Nullify The Matrix
constructive algorithms
,
games
2700
x905
1498F
Christmas Game
bitmasks
,
data structures
,
dfs and similar
,
dp
,
games
,
math
,
trees
2500
x854
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x854
1368F
Lamps on a Circle
games
,
implementation
,
interactive
,
math
2600
x848
1617E
Christmas Chocolates
dfs and similar
,
dp
,
games
,
graphs
,
implementation
,
math
,
number theory
,
shortest paths
,
trees
2700
x835
1100D
Dasha and Chess
constructive algorithms
,
games
,
interactive
2500
x833
255E
Furlo and Rublo and Game
games
,
implementation
,
math
2200
x831
1970C3
Game on Tree (Hard)
dfs and similar
,
dp
,
games
,
trees
1900
x763
1776C
Library game
games
,
greedy
,
interactive
,
sortings
2500
x759
1312F
Attack on Red Kingdom
games
,
two pointers
2500
x718
63E
Sweets Game
bitmasks
,
dfs and similar
,
dp
,
games
,
implementation
2000
x715
536D
Tavas in Kansas
dp
,
games
2900
x710
1511G
Chips on a Board
bitmasks
,
brute force
,
data structures
,
dp
,
games
,
two pointers
2700
x701
1796E
Colored Subgraphs
dfs and similar
,
dp
,
games
,
greedy
,
trees
2500
x697
36D
New Game with a Chess Piece
games
2300
x676
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x671
1817D
Toy Machine
constructive algorithms
,
games
,
implementation
2700
x670
794E
Choosing Carrot
games
,
math
2800
x663
167C
Wizards and Numbers
games
,
math
2300
x657
1776I
Spinach Pizza
games
,
geometry
,
greedy
,
interactive
2500
x641
1110G
Tree-Tac-Toe
constructive algorithms
,
games
,
trees
3100
x606
305E
Playing with String
games
2300
x603
1369F
BareLee
dfs and similar
,
dp
,
games
2700
x597
1411G
No Game No Life
bitmasks
,
games
,
math
,
matrices
2700
x580
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x563
335C
More Reclamation
games
2100
x515
725F
Family Photos
games
,
greedy
2900
x484
1149E
Election Promises
games
,
graphs
3200
x481
138D
World of Darkraft
dp
,
games
2500
x470
1710E
Two Arrays
binary search
,
games
,
graph matchings
2400
x466
1773I
Interactive Factorial Guessing
brute force
,
games
,
implementation
,
interactive
2500
x458
1076G
Array Game
data structures
,
games
3000
x457
354B
Game with Strings
bitmasks
,
dp
,
games
2400
x448
277C
Game
games
,
implementation
2400
x447
98E
Help Shrek and Donkey
dp
,
games
,
math
,
probabilities
2700
x443
1091H
New Year and the Tricolore Recreation
games
3200
x423
154D
Flatland Fencing
games
,
math
2400
x418
1458E
Nim Shortcuts
data structures
,
games
3100
x404
930D
Game with Tokens
data structures
,
games
,
implementation
2500
x393
38F
Smart Boy
dp
,
games
,
strings
2100
x375
273E
Dima and Game
dp
,
games
2600
x359
1033G
Chip Game
games
3500
x356
142D
Help Shrek and Donkey 2
games
2600
x337
919F
A Game With Numbers
games
,
graphs
,
shortest paths
2600
x325
819A
Mister B and Boring Game
games
,
greedy
2200
x308
494E
Sharti
data structures
,
games
3200
x307
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x303
1037G
A Game on Strings
games
3200
x296
838C
Future Failure
dp
,
games
2800
x278
1610I
Mashtali vs AtCoder
games
,
trees
3100
x259
1147F
Zigzag Game
games
,
interactive
3500
x239
1197F
Coloring Game
dp
,
games
,
matrices
2700
x238
914H
Ember and Storm's Tree Game
combinatorics
,
dp
,
games
,
trees
3400
x230
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