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Before contest
Codeforces Round 945 (Div. 2)
43:44:35
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Difficulty:
—
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
1354B
Ternary String
binary search
,
dp
,
implementation
,
two pointers
1200
x29189
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x32652
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x32782
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x33025
466C
Number of Ways
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x34641
1343C
Alternating Subsequence
dp
,
greedy
,
two pointers
1200
x36417
1462A
Favorite Sequence
implementation
,
two pointers
800
x40027
1791C
Prepend and Append
implementation
,
two pointers
800
x40757
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46657
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47962
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60612
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