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Before contest
Codeforces Round (Div. 2)
3 days
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*has extra registration
→ Filter Problems
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
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x6900
142D
Help Shrek and Donkey 2
games
2600
x340
138D
World of Darkraft
dp
,
games
2500
x477
135C
Zero-One
constructive algorithms
,
games
,
greedy
1900
x1325
120E
Put Knight!
games
,
math
1400
x2660
98E
Help Shrek and Donkey
dp
,
games
,
math
,
probabilities
2700
x462
87C
Interesting Game
dp
,
games
,
math
2000
x1315
78C
Beaver Game
dp
,
games
,
number theory
2000
x1824
74B
Train
dp
,
games
,
greedy
1500
x1506
69D
Dot
dp
,
games
1900
x944
63E
Sweets Game
bitmasks
,
dfs and similar
,
dp
,
games
,
implementation
2000
x718
55C
Pie or die
games
1900
x1604
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x569
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x861
38F
Smart Boy
dp
,
games
,
strings
2100
x380
36D
New Game with a Chess Piece
games
2300
x685
15C
Industrial Nim
games
2000
x2184
3C
Tic-tac-toe
brute force
,
games
,
implementation
1800
x7160
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