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Before contest
Educational Codeforces Round 155 (Rated for Div. 2)
3 days
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Difficulty:
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chinese remainder theorem
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2-sat
binary search
bitmasks
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chinese remainder theorem
combinatorics
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Problems
#
Name
1266A
Competitive Programmer
chinese remainder theorem
,
math
1000
x14117
1770C
Koxia and Number Theory
brute force
,
chinese remainder theorem
,
math
,
number theory
1700
x7700
687B
Remainders Game
chinese remainder theorem
,
math
,
number theory
1800
x5248
1438C
Engineer Artem
2-sat
,
chinese remainder theorem
,
constructive algorithms
,
fft
,
flows
2000
x9562
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x3372
1748D
ConstructOR
bitmasks
,
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
math
,
number theory
2100
x2451
919E
Congruence Equation
chinese remainder theorem
,
math
,
number theory
2100
x1710
1500B
Two chandeliers
binary search
,
brute force
,
chinese remainder theorem
,
math
,
number theory
2200
x1914
1117E
Decypher the String
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
interactive
,
math
2200
x1387
993E
Nikita and Order Statistics
chinese remainder theorem
,
fft
,
math
2300
x1252
1536F
Omkar and Akmar
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
fft
,
games
,
geometry
,
math
,
meet-in-the-middle
,
string suffix structures
2600
x856
906D
Power Tower
chinese remainder theorem
,
math
,
number theory
2700
x1708
722F
Cyclic Cipher
chinese remainder theorem
,
data structures
,
implementation
,
number theory
,
two pointers
2800
x428
338D
GCD Table
chinese remainder theorem
,
math
,
number theory
2900
x1021
896D
Nephren Runs a Cinema
chinese remainder theorem
,
combinatorics
,
math
,
number theory
2900
x482
1054H
Epic Convolution
chinese remainder theorem
,
fft
,
math
,
number theory
3500
x152
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