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Before contest
Codeforces Round 1134 (Div. 4)
2 days
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Difficulty:
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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
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Problems
#
Name
4A
Watermelon
brute force
,
math
800
x750139
3D
Least Cost Bracket Sequence
greedy
2600
x4503
3C
Tic-tac-toe
brute force
,
games
,
implementation
1800
x8620
3B
Lorry
greedy
,
sortings
1900
x5556
3A
Shortest path of the king
greedy
,
shortest paths
1000
x23169
2C
Commentator problem
geometry
2600
x2231
2B
The least round way
dp
,
math
2000
x13808
2A
Winner
hashing
,
implementation
1500
x32755
1C
Ancient Berland Circus
geometry
,
math
2100
x6859
1B
Spreadsheet
implementation
,
math
1600
x27636
1A
Theatre Square
math
1000
x339148
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