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Before contest
Codeforces Round 950 (Div. 3)
34:53:14
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Difficulty:
—
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
862D
Mahmoud and Ehab and the binary string
binary search
,
divide and conquer
,
interactive
2000
x1654
843B
Interactive LowerBound
brute force
,
interactive
,
probabilities
2000
x2157
835E
The penguin's game
binary search
,
constructive algorithms
,
interactive
2400
x1128
811D
Vladik and Favorite Game
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2100
x1581
809B
Glad to see you!
binary search
,
interactive
2200
x1456
788D
Finding lines
constructive algorithms
,
divide and conquer
,
interactive
3000
x358
772E
Verifying Kingdom
binary search
,
divide and conquer
,
interactive
,
trees
3200
x123
755C
PolandBall and Forest
dfs and similar
,
dsu
,
graphs
,
interactive
,
trees
1300
x11755
753C
Interactive Bulls and Cows (Hard)
brute force
,
constructive algorithms
,
interactive
2500
x283
750H
New Year and Snowy Grid
dfs and similar
,
dsu
,
graphs
,
interactive
3500
x189
750F
New Year and Finding Roots
constructive algorithms
,
implementation
,
interactive
,
trees
2800
x477
744B
Hongcow's Game
bitmasks
,
divide and conquer
,
interactive
1900
x1710
730B
Minimum and Maximum
constructive algorithms
,
interactive
1800
x2387
727C
Guess the Array
constructive algorithms
,
interactive
,
math
1400
x6962
713B
Searching Rectangles
binary search
,
constructive algorithms
,
interactive
2200
x1421
710F
String Set Queries
brute force
,
data structures
,
hashing
,
interactive
,
string suffix structures
,
strings
2400
x1699
679A
Bear and Prime 100
constructive algorithms
,
interactive
,
math
1400
x12445
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