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Custom test
Problems
#
Name
26B
Regular Bracket Sequence
greedy
1400
x17529
26A
Almost Prime
number theory
900
x28577
25E
Test
hashing
,
strings
2200
x2188
25D
Roads not only in Berland
dsu
,
graphs
,
trees
1900
x10374
25C
Roads in Berland
graphs
,
shortest paths
1900
x5875
25B
Phone numbers
implementation
1100
x9307
25A
IQ test
brute force
1300
x81231
24E
Berland collider
binary search
2300
x858
24D
Broken robot
dp
,
math
,
probabilities
2400
x1799
24C
Sequence of points
geometry
,
implementation
,
math
1800
x1214
24B
F1 Champions
implementation
1500
x1713
24A
Ring road
graphs
1400
x4771
23E
Tree
dp
2500
x588
23D
Tetragon
geometry
,
math
2600
x325
23C
Oranges and Apples
constructive algorithms
,
sortings
2500
x1357
23B
Party
constructive algorithms
,
graphs
,
math
1600
x3198
23A
You're Given a String...
brute force
,
greedy
1200
x5076
22E
Scheme
dfs and similar
,
graphs
,
trees
2300
x1545
22D
Segments
greedy
,
sortings
1900
x2616
22C
System Administrator
graphs
1700
x2950
22B
Bargaining Table
brute force
,
dp
1500
x4079
22A
Second Order Statistics
brute force
800
x20894
21D
Traveling Graph
bitmasks
,
graph matchings
,
graphs
2400
x796
21C
Stripe 2
binary search
,
dp
,
sortings
2000
x2020
21B
Intersection
implementation
,
math
2000
x1302
21A
Jabber ID
implementation
,
strings
1900
x1780
20C
Dijkstra?
graphs
,
shortest paths
1900
x29915
20B
Equation
math
2000
x3652
20A
BerOS file system
implementation
1700
x5944
19E
Fairy
dfs and similar
,
divide and conquer
,
dsu
2900
x1616
19D
Points
data structures
2800
x2115
19C
Deletion of Repeats
greedy
,
hashing
,
string suffix structures
2200
x1045
19B
Checkout Assistant
dp
1900
x4429
19A
World Football Cup
implementation
1400
x2611
18E
Flag 2
dp
2000
x1022
18D
Seller Bob
brute force
,
dp
,
greedy
2000
x1030
18C
Stripe
data structures
,
implementation
1200
x12467
18B
Platforms
brute force
,
math
1700
x2062
18A
Triangle
brute force
,
geometry
1500
x5703
17E
Palisection
strings
2900
x1508
17D
Notepad
number theory
2400
x1037
17C
Balance
dp
2500
x817
17B
Hierarchy
dfs and similar
,
dsu
,
greedy
,
shortest paths
1500
x4476
17A
Noldbach problem
brute force
,
math
,
number theory
1000
x15087
16E
Fish
bitmasks
,
dp
,
probabilities
1900
x4648
16D
Logging
implementation
,
strings
1900
x1512
16C
Monitor
binary search
,
number theory
1800
x4508
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x16893
16A
Flag
implementation
800
x13582
15E
Triangles
combinatorics
,
dp
2600
x557
15D
Map
data structures
,
implementation
,
sortings
2500
x717
15C
Industrial Nim
games
2000
x2162
15B
Laser
math
1800
x1298
15A
Cottage Village
implementation
,
sortings
1200
x3610
14E
Camels
dp
1900
x1619
14D
Two Paths
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
,
two pointers
1900
x4311
14C
Four Segments
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3094
14B
Young Photographer
implementation
1000
x6671
14A
Letter
implementation
800
x10063
13E
Holes
data structures
,
dsu
2700
x5376
13D
Triangles
dp
,
geometry
2600
x594
13C
Sequence
dp
,
sortings
2200
x4116
13B
Letter A
geometry
,
implementation
2000
x834
13A
Numbers
implementation
,
math
1000
x7367
12E
Start of the session
constructive algorithms
2100
x1161
12D
Ball
data structures
,
sortings
2400
x2005
12C
Fruits
greedy
,
implementation
,
sortings
1100
x5771
12B
Correct Solution?
implementation
,
sortings
1100
x8013
12A
Super Agent
implementation
800
x12395
11E
Forward, march!
binary search
,
dp
,
greedy
2800
x345
11D
A Simple Task
bitmasks
,
dp
,
graphs
2200
x4460
11C
How Many Squares?
implementation
2200
x588
11B
Jumping Jack
math
1600
x4323
11A
Increasing Sequence
constructive algorithms
,
implementation
,
math
900
x12428
10E
Greedy Change
constructive algorithms
2600
x802
10D
LCIS
dp
2800
x4056
10C
Digital Root
number theory
2000
x1391
10B
Cinema Cashier
dp
,
implementation
1500
x1718
10A
Power Consumption Calculation
implementation
900
x6681
9E
Interestring graph and Apples
dfs and similar
,
dsu
,
graphs
2300
x987
9D
How many trees?
combinatorics
,
divide and conquer
,
dp
1900
x3668
9C
Hexadecimal's Numbers
brute force
,
implementation
,
math
1200
x12373
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5201
9A
Die Roll
math
,
probabilities
800
x52597
8E
Beads
dp
,
graphs
2600
x667
8D
Two Friends
binary search
,
geometry
2600
x509
8C
Looking for Order
bitmasks
,
dp
2000
x3248
8B
Obsession with Robots
constructive algorithms
,
graphs
,
implementation
1400
x4077
8A
Train and Peter
strings
1200
x5498
7E
Defining Macros
dp
,
expression parsing
,
implementation
2600
x688
7D
Palindrome Degree
hashing
,
strings
2200
x3514
7C
Line
math
,
number theory
1800
x4238
7B
Memory Manager
implementation
1600
x2371
7A
Kalevitch and Chess
brute force
,
constructive algorithms
1100
x6853
6E
Exposition
binary search
,
data structures
,
dsu
,
trees
,
two pointers
1900
x3001
6D
Lizards and Basements 2
brute force
,
dp
2600
x1812
6C
Alice, Bob and Chocolate
greedy
,
two pointers
1200
x13012
6B
President's Office
implementation
1100
x12143
6A
Triangle
brute force
,
geometry
900
x19080
5E
Bindian Signalizing
data structures
2400
x2007
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