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Before contest
Kotlin Heroes: Episode 11
19:12:58
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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
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greedy
hashing
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Problems
#
Name
9C
Hexadecimal's Numbers
brute force
,
implementation
,
math
1200
x12911
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5501
8B
Obsession with Robots
constructive algorithms
,
graphs
,
implementation
1400
x4335
8A
Train and Peter
strings
1200
x5901
7A
Kalevitch and Chess
brute force
,
constructive algorithms
1100
x7195
6C
Alice, Bob and Chocolate
greedy
,
two pointers
1200
x13917
6B
President's Office
implementation
1100
x12962
5B
Center Alignment
implementation
,
strings
1200
x5874
4C
Registration System
data structures
,
hashing
,
implementation
1300
x82721
4B
Before an Exam
constructive algorithms
,
greedy
1200
x24790
2A
Winner
hashing
,
implementation
1500
x26275
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