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Before contest
Codeforces Round 973 (Div. 2)
02:54:17
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→ Filter Problems
Difficulty:
—
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
8E
Beads
dp
,
graphs
2600
x685
8D
Two Friends
binary search
,
geometry
2600
x521
8C
Looking for Order
bitmasks
,
dp
2000
x3514
7E
Defining Macros
dp
,
expression parsing
,
implementation
2600
x708
7D
Palindrome Degree
hashing
,
strings
2200
x3703
7C
Line
math
,
number theory
1800
x4590
7B
Memory Manager
implementation
1600
x2591
6E
Exposition
binary search
,
data structures
,
dsu
,
trees
,
two pointers
1900
x3266
6D
Lizards and Basements 2
brute force
,
dp
2600
x1994
5E
Bindian Signalizing
data structures
2400
x2131
5D
Follow Traffic Rules
implementation
,
math
2100
x1697
5C
Longest Regular Bracket Sequence
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
,
strings
1900
x13659
4D
Mysterious Present
dp
,
sortings
1700
x10238
3D
Least Cost Bracket Sequence
greedy
2600
x3346
3C
Tic-tac-toe
brute force
,
games
,
implementation
1800
x7287
3B
Lorry
greedy
,
sortings
1900
x4542
2C
Commentator problem
geometry
2600
x1750
2B
The least round way
dp
,
math
2000
x10806
1C
Ancient Berland Circus
geometry
,
math
2100
x5672
1B
Spreadsheet
implementation
,
math
1600
x22521
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