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Before contest
Codeforces Round #605 (Div. 3)
17:01:14
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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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Problems
#
Name
1221E
Game With String
games
2400
x625
1220C
Substring Game in the Lesson
games
,
greedy
,
strings
1300
x5807
1215D
Ticket Game
games
,
greedy
,
math
1700
x3266
1197F
Coloring Game
dp
,
games
,
matrices
2500
x116
1194D
1-2-K Game
games
,
math
1700
x3762
1190C
Tokitsukaze and Duel
brute force
,
games
,
greedy
2400
x1129
1190B
Tokitsukaze, CSL and Stone Game
games
1800
x3971
1147F
Zigzag Game
games
,
interactive
3400
x57
1147C
Thanos Nim
games
2100
x1545
1149E
Election Promises
games
,
graphs
3100
x107
1155B
Game with Telephone Numbers
games
,
greedy
,
implementation
1200
x6819
1110G
Tree-Tac-Toe
constructive algorithms
,
games
,
trees
3000
x216
1100D
Dasha and Chess
constructive algorithms
,
games
,
interactive
2400
x560
1102C
Doors Breaking and Repairing
games
1200
x7282
1099F
Cookies
binary search
,
data structures
,
dfs and similar
,
dp
,
games
,
trees
2300
x524
1091H
New Year and the Tricolore Recreation
games
3100
x159
1090G
Combostone
games
,
implementation
3000
x43
1076G
Array Game
data structures
,
games
2700
x128
1033G
Chip Game
games
3200
x59
1033C
Permutation Game
brute force
,
dp
,
games
1600
x3128
1037G
A Game on Strings
games
2900
x137
980C
Posterized
games
,
greedy
1700
x2901
959A
Mahmoud and Ehab and the even-odd game
games
,
math
600
x14413
930D
Game with Tokens
data structures
,
games
,
implementation
2600
x247
936B
Sleepy Game
dfs and similar
,
dp
,
games
,
graphs
2100
x2045
934A
A Compatible Pair
brute force
,
games
1400
x4724
919F
A Game With Numbers
games
,
graphs
,
shortest paths
2800
x158
917B
MADMAX
dfs and similar
,
dp
,
games
,
graphs
1800
x2290
914H
Ember and Storm's Tree Game
combinatorics
,
dp
,
games
,
trees
2900
x50
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1300
x6094
896B
Ithea Plays With Chtholly
binary search
,
constructive algorithms
,
games
,
greedy
,
interactive
2000
x1316
859C
Pie Rules
dp
,
games
1500
x2994
850C
Arpa and a game with Mojtaba
bitmasks
,
dp
,
games
2400
x759
841B
Godsend
games
,
math
1200
x7739
838C
Future Failure
dp
,
games
2800
x46
832A
Sasha and Sticks
games
,
math
800
x11839
819A
Mister B and Boring Game
games
,
greedy
2100
x200
812E
Sagheer and Apple Tree
games
,
trees
2200
x679
794E
Choosing Carrot
games
,
math
2700
x300
794C
Naming Company
games
,
greedy
,
sortings
1800
x2291
786A
Berzerk
dfs and similar
,
dp
,
games
2100
x1558
768E
Game of Stones
bitmasks
,
dp
,
games
2000
x1647
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1200
x5693
725F
Family Photos
games
,
greedy
2900
x218
731E
Funny Game
dp
,
games
2300
x918
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x896
705B
Spider Man
games
,
math
1200
x6607
630R
Game
games
1300
x4730
616B
Dinner with Emma
games
,
greedy
1100
x6037
603C
Lieges of Legendre
games
,
math
2300
x1335
594A
Warrior and Archer
games
2900
x1105
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x9533
549C
The Game Of Parity
games
2200
x1443
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x8783
533C
Board Game
games
,
greedy
,
implementation
,
math
1700
x1557
536D
Tavas in Kansas
dp
,
games
2800
x257
520D
Cubes
games
,
greedy
,
implementation
2400
x1269
494E
Sharti
data structures
,
games
3200
x105
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x5393
457F
An easy problem about trees
dp
,
games
,
greedy
,
trees
3000
x47
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
2100
x3174
388C
Fox and Card Game
games
,
greedy
,
sortings
2000
x1884
377C
Captains Mode
bitmasks
,
dp
,
games
2400
x799
354B
Game with Strings
bitmasks
,
dp
,
games
2500
x338
346A
Alice and Bob
games
,
math
,
number theory
1600
x5033
335C
More Reclamation
games
2100
x382
317D
Game with Powers
dp
,
games
2200
x681
305E
Playing with String
games
2500
x429
293A
Weird Game
games
,
greedy
1500
x1778
282D
Yet Another Number Game
dp
,
games
2100
x966
279E
Beautiful Decomposition
dp
,
games
,
greedy
,
number theory
2100
x1006
277C
Game
games
,
implementation
2400
x380
276B
Little Girl and Game
games
,
greedy
1400
x9069
273E
Dima and Game
dp
,
games
2600
x172
257B
Playing Cubes
games
,
greedy
,
implementation
1400
x3534
255E
Furlo and Rublo and Game
games
,
implementation
,
math
2200
x649
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x3280
167C
Wizards and Numbers
games
,
math
2400
x434
154D
Flatland Fencing
games
,
math
2300
x324
150A
Win or Freeze
games
,
math
,
number theory
1600
x4038
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1900
x3200
142D
Help Shrek and Donkey 2
games
2600
x224
138D
World of Darkraft
dp
,
games
2500
x306
135C
Zero-One
constructive algorithms
,
games
,
greedy
2000
x1010
120E
Put Knight!
games
1500
x1850
98E
Help Shrek and Donkey
dp
,
games
,
math
,
probabilities
2500
x144
87C
Interesting Game
dp
,
games
,
math
2100
x971
78C
Beaver Game
dp
,
games
,
number theory
1900
x1113
74B
Train
dp
,
games
,
greedy
1600
x1060
69D
Dot
dp
,
games
2100
x568
63E
Sweets Game
bitmasks
,
dfs and similar
,
dp
,
games
,
implementation
2200
x369
55C
Pie or die
games
1900
x957
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x333
38F
Smart Boy
dp
,
games
,
strings
2200
x256
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2100
x576
36D
New Game with a Chess Piece
games
2200
x353
15C
Industrial Nim
games
2000
x1282
3C
Tic-tac-toe
brute force
,
games
,
implementation
1700
x3805
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