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Custom test
Problems
#
Name
238D
Tape Programming
data structures
,
implementation
2900
x245
237B
Young Table
implementation
,
sortings
1500
x2222
237A
Free Cash
implementation
1000
x25985
236B
Easy Number Challenge
implementation
,
number theory
1300
x13582
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x196442
235E
Number Challenge
combinatorics
,
dp
,
implementation
,
math
,
number theory
2600
x758
234G
Practice
constructive algorithms
,
divide and conquer
,
implementation
1600
x1459
234E
Champions' League
implementation
1600
x989
234D
Cinema
implementation
1600
x1517
234C
Weather
dp
,
implementation
1300
x5354
234A
Lefthanders and Righthanders
implementation
1200
x4382
233A
Perfect Permutation
implementation
,
math
800
x40853
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x71031
228B
Two Tables
brute force
,
implementation
1400
x3439
228A
Is your horseshoe on the other hoof?
implementation
800
x103483
227B
Effective Approach
implementation
1100
x26750
226C
Anniversary
data structures
,
implementation
,
math
,
matrices
,
number theory
2400
x847
225D
Snake
bitmasks
,
dfs and similar
,
graphs
,
implementation
2200
x914
224B
Array
bitmasks
,
implementation
,
two pointers
1500
x7190
223A
Bracket Sequence
data structures
,
expression parsing
,
implementation
1700
x2486
222C
Reducing Fractions
implementation
,
math
,
number theory
,
sortings
1800
x2107
222B
Cosmic Tables
data structures
,
implementation
1300
x5995
222A
Shooshuns and Sequence
brute force
,
implementation
1200
x10436
221B
Little Elephant and Numbers
implementation
1300
x4515
221A
Little Elephant and Function
implementation
,
math
1000
x14800
220A
Little Elephant and Problem
implementation
,
sortings
1300
x11846
219B
Special Offer! Super Price 999 Bourles!
implementation
1400
x5720
219A
k-String
implementation
,
strings
1000
x26367
218B
Airport
implementation
1100
x15875
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8980
216B
Forming Teams
dfs and similar
,
implementation
1700
x6139
216A
Tiling with Hexagons
implementation
,
math
1200
x4932
215C
Crosses
brute force
,
implementation
2100
x533
215A
Bicycle Chain
brute force
,
implementation
900
x14031
212B
Polycarpus is Looking for Good Substrings
bitmasks
,
hashing
,
implementation
2300
x323
208D
Prizes, Prizes, more Prizes
implementation
1200
x7502
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x21714
204E
Little Elephant and Strings
data structures
,
implementation
,
string suffix structures
,
two pointers
2800
x1108
203D
Hit Ball
geometry
,
implementation
,
math
1700
x1403
203B
Game on Paper
brute force
,
implementation
1300
x2561
203A
Two Problems
brute force
,
implementation
1200
x4115
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x16000
200E
Tractor College
implementation
,
math
,
number theory
,
ternary search
2400
x334
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x880
200C
Football Championship
brute force
,
implementation
1800
x1005
200B
Drinks
implementation
,
math
800
x109351
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x25364
198A
About Bacteria
implementation
,
math
1700
x3119
195C
Try and Catch
expression parsing
,
implementation
1800
x1123
195B
After Training
data structures
,
implementation
,
math
1300
x5134
194A
Exams
implementation
,
math
900
x9678
192B
Walking in the Rain
brute force
,
implementation
1100
x6164
192A
Funky Numbers
binary search
,
brute force
,
implementation
1300
x10181
188H
Stack
*special problem
,
expression parsing
,
implementation
1800
x246
188G
Array Sorting
*special problem
,
implementation
1600
x327
188F
Binary Notation
*special problem
,
implementation
1400
x290
188E
HQ9+
*special problem
,
implementation
1400
x492
188D
Asterisks
*special problem
,
implementation
1100
x660
188C
LCM
*special problem
,
implementation
,
math
1400
x436
188B
A + Reverse B
*special problem
,
implementation
1300
x706
186A
Comparing Strings
implementation
,
strings
1100
x16336
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x7852
182B
Vasya's Calendar
implementation
1000
x6819
182A
Battlefield
geometry
,
graphs
,
implementation
,
shortest paths
2200
x280
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x6751
180F
Mathematical Analysis Rocks!
constructive algorithms
,
implementation
,
math
1200
x2463
180A
Defragmentation
implementation
1800
x523
177A2
Good Matrix Elements
implementation
800
x7088
177A1
Good Matrix Elements
implementation
800
x8284
175F
Gnomes of Might and Magic
data structures
,
graphs
,
implementation
,
shortest paths
3000
x65
175C
Geometry Horse
greedy
,
implementation
,
sortings
,
two pointers
1600
x1293
175B
Plane of Tanks: Pro
implementation
1400
x1381
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2357
174B
File List
dp
,
greedy
,
implementation
1400
x2200
173D
Deputies
constructive algorithms
,
graphs
,
greedy
,
implementation
2500
x247
173A
Rock-Paper-Scissors
implementation
,
math
1300
x2239
172C
Bus
*special problem
,
implementation
,
sortings
1500
x1130
172B
Pseudorandom Sequence Period
*special problem
,
implementation
,
number theory
1200
x2693
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x5933
171H
A polyline
*special problem
,
implementation
1700
x267
171F
ucyhf
*special problem
,
brute force
,
implementation
,
number theory
1600
x1256
171C
A Piece of Cake
*special problem
,
implementation
2000
x1055
168B
Wizards and Minimal Spell
implementation
,
strings
1700
x1200
168A
Wizards and Demonstration
implementation
,
math
900
x10347
167A
Wizards and Trolleybuses
implementation
,
math
1600
x2014
166A
Rank List
binary search
,
implementation
,
sortings
1100
x16924
165B
Burning Midnight Oil
binary search
,
implementation
1500
x16742
165A
Supercentral Point
implementation
1000
x22821
162A
Pentagonal numbers
*special problem
,
implementation
1100
x796
160C
Find Pair
implementation
,
math
,
sortings
1700
x3387
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2461
158C
Cd and pwd commands
*special problem
,
data structures
,
implementation
1400
x8950
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x83280
158A
Next Round
*special problem
,
implementation
800
x235592
156B
Suspects
constructive algorithms
,
data structures
,
implementation
1600
x2193
152B
Steps
binary search
,
implementation
1300
x6386
152A
Marks
implementation
900
x16303
151B
Phone Numbers
implementation
,
strings
1200
x6247
151A
Soft Drinking
implementation
,
math
800
x67181
149B
Martian Clock
implementation
1600
x2228
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implementation
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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