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Before contest
Educational Codeforces Round 167 (Rated for Div. 2)
06:29:03
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Difficulty:
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brute force
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
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shortest paths
sortings
string suffix structures
strings
ternary search
trees
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Name
27E
Number With The Given Amount Of Divisors
brute force
,
dp
,
number theory
2000
x4031
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
1300
x5205
25A
IQ test
brute force
1300
x82728
23A
You're Given a String...
brute force
,
greedy
1200
x5128
22B
Bargaining Table
brute force
,
dp
1500
x4114
22A
Second Order Statistics
brute force
800
x21284
18D
Seller Bob
brute force
,
dp
,
greedy
2000
x1042
18B
Platforms
brute force
,
math
1700
x2082
18A
Triangle
brute force
,
geometry
1500
x5761
17A
Noldbach problem
brute force
,
math
,
number theory
1000
x15446
14C
Four Segments
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3275
9C
Hexadecimal's Numbers
brute force
,
implementation
,
math
1200
x12656
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5371
7A
Kalevitch and Chess
brute force
,
constructive algorithms
1100
x7062
6D
Lizards and Basements 2
brute force
,
dp
2600
x1959
6A
Triangle
brute force
,
geometry
900
x19318
4A
Watermelon
brute force
,
math
800
x492309
3C
Tic-tac-toe
brute force
,
games
,
implementation
1800
x7118
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