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Before contest
Educational Codeforces Round 150 (Rated for Div. 2)
6 days
→ Filter Problems
Difficulty:
—
chinese remainder theorem
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
1770C
Koxia and Number Theory
brute force
,
chinese remainder theorem
,
math
,
number theory
1700
x7305
1748D
ConstructOR
bitmasks
,
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
math
,
number theory
2100
x2328
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x3220
1536F
Omkar and Akmar
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
fft
,
games
,
geometry
,
math
,
meet-in-the-middle
,
string suffix structures
2600
x835
1500B
Two chandeliers
binary search
,
brute force
,
chinese remainder theorem
,
math
,
number theory
2200
x1872
1438C
Engineer Artem
2-sat
,
chinese remainder theorem
,
constructive algorithms
,
fft
,
flows
2000
x9288
1266A
Competitive Programmer
chinese remainder theorem
,
math
1000
x13714
1117E
Decypher the String
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
interactive
,
math
2200
x1347
1054H
Epic Convolution
chinese remainder theorem
,
fft
,
math
,
number theory
3500
x150
993E
Nikita and Order Statistics
chinese remainder theorem
,
fft
,
math
2300
x1211
919E
Congruence Equation
chinese remainder theorem
,
math
,
number theory
2100
x1663
906D
Power Tower
chinese remainder theorem
,
math
,
number theory
2700
x1526
896D
Nephren Runs a Cinema
chinese remainder theorem
,
combinatorics
,
math
,
number theory
2900
x399
722F
Cyclic Cipher
chinese remainder theorem
,
data structures
,
implementation
,
number theory
,
two pointers
2800
x418
687B
Remainders Game
chinese remainder theorem
,
math
,
number theory
1800
x4989
338D
GCD Table
chinese remainder theorem
,
math
,
number theory
2900
x972
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