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Before contest
Codeforces Round 941 (Div. 1)
02:51:14
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Before contest
Codeforces Round 941 (Div. 2)
02:51:14
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Difficulty:
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interactive
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
788D
Finding lines
constructive algorithms
,
divide and conquer
,
interactive
3000
x356
772E
Verifying Kingdom
binary search
,
divide and conquer
,
interactive
,
trees
3200
x122
755C
PolandBall and Forest
dfs and similar
,
dsu
,
graphs
,
interactive
,
trees
1300
x11604
753C
Interactive Bulls and Cows (Hard)
brute force
,
constructive algorithms
,
interactive
2500
x279
750H
New Year and Snowy Grid
dfs and similar
,
dsu
,
graphs
,
interactive
3500
x187
750F
New Year and Finding Roots
constructive algorithms
,
implementation
,
interactive
,
trees
2800
x461
744B
Hongcow's Game
bitmasks
,
divide and conquer
,
interactive
1900
x1706
730B
Minimum and Maximum
constructive algorithms
,
interactive
1800
x2375
727C
Guess the Array
constructive algorithms
,
interactive
,
math
1400
x6887
713B
Searching Rectangles
binary search
,
constructive algorithms
,
interactive
2200
x1419
710F
String Set Queries
brute force
,
data structures
,
hashing
,
interactive
,
string suffix structures
,
strings
2400
x1667
679A
Bear and Prime 100
constructive algorithms
,
interactive
,
math
1400
x12289
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