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Name
24E
Berland collider
binary search
2300
x1098
21C
Stripe 2
binary search
,
dp
,
sortings
2000
x2666
16C
Monitor
binary search
,
number theory
1800
x5598
11E
Forward, march!
binary search
,
dp
,
greedy
2800
x510
8D
Two Friends
binary search
,
geometry
2600
x619
6E
Exposition
binary search
,
data structures
,
dsu
,
trees
,
two pointers
1900
x4147
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binary search
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
trees
two pointers
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x1098