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Custom test
Problems
#
Name
251D
Two Sets
bitmasks
,
math
2700
x760
251C
Number Transformation
dp
,
greedy
,
number theory
2000
x1172
251B
Playing with Permutations
implementation
,
math
1800
x1388
251A
Points on Line
binary search
,
combinatorics
,
two pointers
1300
x22324
250E
Mad Joe
brute force
2000
x526
250D
Building Bridge
geometry
,
ternary search
,
two pointers
1900
x1052
250C
Movie Critics
greedy
1600
x2276
250B
Restoring IPv6
implementation
,
strings
1500
x2287
250A
Paper Work
greedy
1000
x4979
249E
Endless Matrix
math
2600
x402
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x608
248E
Piglet's Birthday
dp
,
math
,
probabilities
2600
x696
248D
Sweets for Everyone!
binary search
,
greedy
,
implementation
2300
x552
248C
Robo-Footballer
binary search
,
geometry
2000
x915
248B
Chilly Willy
math
,
number theory
1400
x5920
248A
Cupboards
implementation
800
x25673
246E
Blood Cousins Return
binary search
,
data structures
,
dfs and similar
,
dp
,
sortings
2400
x4940
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x10473
246C
Beauty Pageant
brute force
,
constructive algorithms
,
greedy
1600
x2877
246B
Increase and Decrease
greedy
,
math
1300
x12500
246A
Buggy Sorting
constructive algorithms
,
greedy
,
sortings
900
x10404
245H
Queries for Number of Palindromes
dp
,
hashing
,
strings
1800
x9871
245G
Suggested Friends
brute force
,
graphs
2200
x569
245F
Log Stream Analysis
binary search
,
brute force
,
implementation
,
strings
2000
x1004
245E
Mishap in Club
greedy
,
implementation
1400
x3563
245D
Restoring Table
constructive algorithms
,
greedy
1500
x2960
245C
Game with Coins
greedy
1700
x1708
245B
Internet Address
implementation
,
strings
1100
x5573
245A
System Administrator
implementation
800
x9251
244B
Undoubtedly Lucky Numbers
bitmasks
,
brute force
,
dfs and similar
1600
x5014
244A
Dividing Orange
implementation
900
x8722
243E
Matrix
data structures
3000
x291
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x261
243C
Colorado Potato Beetle
dfs and similar
,
implementation
2200
x595
243B
Hydra
graphs
,
sortings
2000
x1373
243A
The Brand New Function
bitmasks
1600
x4556
242E
XOR on Segment
bitmasks
,
data structures
2000
x12862
242D
Dispute
dfs and similar
,
graphs
,
greedy
2100
x2079
242C
King's Path
dfs and similar
,
graphs
,
hashing
,
shortest paths
1800
x11805
242B
Big Segment
implementation
,
sortings
1100
x17611
242A
Heads or Tails
brute force
,
implementation
1100
x6938
241G
Challenging Balloons
constructive algorithms
1900
x569
241F
Race
brute force
,
implementation
2300
x306
241E
Flights
graphs
,
shortest paths
2600
x1532
241D
Numbers
2900
x419
241C
Mirror Box
geometry
,
implementation
2000
x548
241B
Friends
binary search
,
bitmasks
,
data structures
,
math
2700
x1062
241A
Old Peykan
greedy
1300
x2453
240F
TorCoder
data structures
2600
x2377
240E
Road Repairs
dfs and similar
,
graphs
,
greedy
2800
x447
239B
Easy Tape Programming
brute force
,
implementation
1500
x1501
239A
Two Bags of Potatoes
greedy
,
implementation
,
math
1200
x21023
238E
Meeting Her
dp
,
graphs
,
shortest paths
2600
x533
238D
Tape Programming
data structures
,
implementation
2900
x281
238C
World Eater Brothers
dfs and similar
,
dp
,
greedy
,
trees
2100
x1421
238B
Boring Partition
constructive algorithms
1800
x1431
238A
Not Wool Sequences
constructive algorithms
,
math
1300
x2221
237E
Build String
flows
,
graphs
2000
x2092
237D
T-decomposition
dfs and similar
,
graphs
,
greedy
,
trees
2000
x654
237C
Primes on Interval
binary search
,
number theory
,
two pointers
1600
x6948
237B
Young Table
implementation
,
sortings
1500
x2394
237A
Free Cash
implementation
1000
x30153
236B
Easy Number Challenge
implementation
,
number theory
1300
x17776
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x300475
235E
Number Challenge
combinatorics
,
dp
,
implementation
,
math
,
number theory
2600
x1004
235D
Graph Game
graphs
3000
x728
235C
Cyclical Quest
data structures
,
string suffix structures
,
strings
2700
x2636
235B
Let's Play Osu!
dp
,
math
,
probabilities
2000
x4622
235A
LCM Challenge
number theory
1600
x21884
234H
Merging Two Decks
constructive algorithms
,
greedy
2000
x630
234G
Practice
constructive algorithms
,
divide and conquer
,
implementation
1600
x1608
234F
Fence
dp
1800
x2044
234E
Champions' League
implementation
1600
x1063
234D
Cinema
implementation
1600
x1616
234C
Weather
dp
,
implementation
1300
x6117
234B
Reading
sortings
1000
x7819
234A
Lefthanders and Righthanders
implementation
1200
x4752
233B
Non-square Equation
binary search
,
brute force
,
math
1400
x8417
233A
Perfect Permutation
implementation
,
math
800
x50578
232E
Quick Tortoise
bitmasks
,
divide and conquer
,
dp
3000
x1041
232D
Fence
binary search
,
data structures
,
string suffix structures
2900
x585
232C
Doe Graphs
constructive algorithms
,
divide and conquer
,
dp
,
graphs
,
shortest paths
2600
x345
232B
Table
bitmasks
,
combinatorics
,
dp
,
math
1900
x1708
232A
Cycles
binary search
,
constructive algorithms
,
graphs
,
greedy
1600
x2887
231E
Cactus
data structures
,
dfs and similar
,
dp
,
graphs
,
trees
2100
x2442
231D
Magic Box
brute force
,
geometry
1600
x4382
231C
To Add or Not to Add
binary search
,
sortings
,
two pointers
1600
x10006
231B
Magic, Wizardry and Wonders
constructive algorithms
,
greedy
1500
x4026
231A
Team
brute force
,
greedy
800
x461975
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x102385
230A
Dragons
greedy
,
sortings
1000
x104732
229E
Gifts
combinatorics
,
dp
,
math
,
probabilities
2600
x628
229D
Towers
dp
,
greedy
,
two pointers
2100
x2718
229C
Triangles
combinatorics
,
graphs
,
math
1900
x1871
229B
Planets
binary search
,
data structures
,
graphs
,
shortest paths
1700
x6114
229A
Shifts
brute force
,
two pointers
1500
x3815
228E
The Road to Berland is Paved With Good Intentions
2-sat
,
dfs and similar
,
dsu
,
graphs
1900
x2905
228D
Zigzag
data structures
2100
x467
228C
Fractal Detector
dp
,
hashing
2000
x566
228B
Two Tables
brute force
,
implementation
1400
x3674
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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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