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Before contest
Codeforces Round 954 (Div. 3)
5 days
→ Filter Problems
Difficulty:
—
hashing
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
19C
Deletion of Repeats
greedy
,
hashing
,
string suffix structures
2200
x1057
7D
Palindrome Degree
hashing
,
strings
2200
x3543
4C
Registration System
data structures
,
hashing
,
implementation
1300
x78720
2A
Winner
hashing
,
implementation
1500
x25395
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