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Codeforces Round (Div. 2)
5 days
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Difficulty:
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*combine tags by OR
greedy
implementation
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
12C
Fruits
greedy
,
implementation
,
sortings
1100
x6089
12B
Correct Solution?
implementation
,
sortings
1100
x8392
9C
Hexadecimal's Numbers
brute force
,
implementation
,
math
1200
x12770
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5438
6C
Alice, Bob and Chocolate
greedy
,
two pointers
1200
x13524
6B
President's Office
implementation
1100
x12662
5B
Center Alignment
implementation
,
strings
1200
x5789
5A
Chat Servers Outgoing Traffic
implementation
1000
x9567
4B
Before an Exam
constructive algorithms
,
greedy
1200
x24319
3A
Shortest path of the king
greedy
,
shortest paths
1000
x18931
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