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Before contest
Codeforces Round 953 (Div. 2)
07:56:08
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Difficulty:
—
strings
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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Custom test
Problems
#
Name
31B
Sysadmin Bob
greedy
,
implementation
,
strings
1500
x4146
30E
Tricky and Clever Password
binary search
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
strings
2800
x683
25E
Test
hashing
,
strings
2200
x2236
21A
Jabber ID
implementation
,
strings
1900
x1797
17E
Palisection
strings
2900
x1519
16D
Logging
implementation
,
strings
1900
x1523
8A
Train and Peter
strings
1200
x5677
7D
Palindrome Degree
hashing
,
strings
2200
x3543
5C
Longest Regular Bracket Sequence
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
,
strings
1900
x13000
5B
Center Alignment
implementation
,
strings
1200
x5708
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