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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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*has extra registration
→ Filter Problems
Difficulty:
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two pointers
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
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x208
1638F
Two Posters
brute force
,
data structures
,
greedy
,
two pointers
3200
x190
1753F
Minecraft Series
brute force
,
two pointers
3500
x187
138E
Hellish Constraints
brute force
,
dp
,
two pointers
2900
x165
1696H
Maximum Product?
brute force
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
,
two pointers
3500
x154
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x148
1901F
Landscaping
binary search
,
geometry
,
two pointers
2900
x144
744E
Hongcow Masters the Cyclic Shift
strings
,
two pointers
3200
x133
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x119
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x116
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x78
1431H
Rogue-like Game
*special problem
,
brute force
,
greedy
,
two pointers
2600
x65
1912I
Innovative Washing Machine
geometry
,
math
,
two pointers
3300
x54
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