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Before contest
Codeforces Round #956 (Div. 2) and ByteRace 2024
27:46:42
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Difficulty:
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combine-tags-by-or
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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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Problems
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Status
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Custom test
Problems
#
Name
263D
Cycle in Graph
dfs and similar
,
graphs
1800
x3372
263C
Circle of Numbers
brute force
,
dfs and similar
,
implementation
2000
x1062
263B
Squares
greedy
,
implementation
,
sortings
900
x8790
263A
Beautiful Matrix
implementation
800
x231559
262B
Roma and Changing Signs
greedy
1200
x11067
262A
Roma and Lucky Numbers
implementation
800
x19425
261E
Maxim and Calculator
brute force
,
dp
,
two pointers
2800
x406
261D
Maxim and Increasing Subsequence
dp
2600
x554
261C
Maxim and Matrix
constructive algorithms
,
dp
,
math
2000
x765
261B
Maxim and Restaurant
dp
,
math
,
probabilities
1900
x1374
261A
Maxim and Discounts
greedy
,
sortings
1400
x5118
260E
Dividing Kingdom
binary search
,
brute force
,
data structures
2500
x453
260D
Black and White Tree
constructive algorithms
,
dsu
,
graphs
,
greedy
,
trees
2100
x1376
260C
Balls and Boxes
constructive algorithms
,
greedy
,
implementation
1700
x2939
260B
Ancient Prophesy
brute force
,
implementation
,
strings
1600
x3759
260A
Adding Digits
implementation
,
math
1400
x14314
259B
Little Elephant and Magic Square
brute force
,
implementation
1100
x13799
259A
Little Elephant and Chess
brute force
,
strings
1000
x8987
258E
Little Elephant and Tree
data structures
,
dfs and similar
,
trees
2400
x1043
258D
Little Elephant and Broken Sorting
dp
,
math
,
probabilities
2600
x1223
258C
Little Elephant and LCM
binary search
,
combinatorics
,
dp
,
math
2000
x1766
258B
Little Elephant and Elections
brute force
,
combinatorics
,
dp
1900
x1427
258A
Little Elephant and Bits
greedy
,
math
1100
x22371
257E
Greedy Elevator
data structures
,
implementation
2200
x277
257D
Sum
greedy
,
math
1900
x1559
257C
View Angle
brute force
,
geometry
,
math
1800
x4235
257B
Playing Cubes
games
,
greedy
,
implementation
1300
x6930
257A
Sockets
greedy
,
implementation
,
sortings
1100
x6418
256E
Lucky Arrays
data structures
2400
x656
256D
Liars and Serge
dp
2700
x256
255E
Furlo and Rublo and Game
games
,
implementation
,
math
2200
x836
255D
Mr. Bender and Square
binary search
,
implementation
,
math
1800
x1936
255C
Almost Arithmetical Progression
brute force
,
dp
1500
x4659
255B
Code Parsing
implementation
1200
x4901
255A
Greg's Workout
implementation
800
x28000
254E
Dormitory
dp
,
implementation
2100
x660
254D
Rats
brute force
,
dfs and similar
,
graphs
,
implementation
,
shortest paths
2300
x506
254C
Anagram
greedy
,
strings
1800
x1477
254B
Jury Size
brute force
,
implementation
1500
x2136
254A
Cards with Numbers
constructive algorithms
,
sortings
1200
x6916
253E
Printer
binary search
,
data structures
,
implementation
,
sortings
2200
x523
253D
Table with Letters - 2
brute force
,
two pointers
2000
x822
253C
Text Editor
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x2551
253B
Physics Practical
binary search
,
dp
,
sortings
,
two pointers
1400
x10440
253A
Boys and Girls
greedy
1100
x11042
252B
Unsorting Array
brute force
,
sortings
1800
x1699
252A
Little Xor
brute force
,
implementation
1100
x5201
251E
Tree and Table
dfs and similar
,
dp
,
implementation
,
trees
3000
x169
251D
Two Sets
bitmasks
,
math
2700
x444
251C
Number Transformation
dp
,
greedy
,
number theory
2000
x1013
251B
Playing with Permutations
implementation
,
math
1800
x1257
251A
Points on Line
binary search
,
combinatorics
,
two pointers
1300
x17013
250E
Mad Joe
brute force
2000
x442
250D
Building Bridge
geometry
,
ternary search
,
two pointers
1900
x882
250C
Movie Critics
greedy
1600
x1896
250B
Restoring IPv6
implementation
,
strings
1500
x1959
250A
Paper Work
greedy
1000
x4024
249E
Endless Matrix
math
2600
x290
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x399
248E
Piglet's Birthday
dp
,
math
,
probabilities
2600
x570
248D
Sweets for Everyone!
binary search
,
greedy
,
implementation
2300
x487
248C
Robo-Footballer
binary search
,
geometry
2000
x802
248B
Chilly Willy
math
,
number theory
1400
x5226
248A
Cupboards
implementation
800
x21728
246E
Blood Cousins Return
binary search
,
data structures
,
dfs and similar
,
dp
,
sortings
2400
x3040
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x9283
246C
Beauty Pageant
brute force
,
constructive algorithms
,
greedy
1600
x2612
246B
Increase and Decrease
greedy
,
math
1300
x11081
246A
Buggy Sorting
constructive algorithms
,
greedy
,
sortings
900
x9137
245H
Queries for Number of Palindromes
dp
,
hashing
,
strings
1800
x6220
245G
Suggested Friends
brute force
,
graphs
2200
x425
245F
Log Stream Analysis
binary search
,
brute force
,
implementation
,
strings
2000
x871
245E
Mishap in Club
greedy
,
implementation
1400
x3247
245D
Restoring Table
constructive algorithms
,
greedy
1500
x2258
245C
Game with Coins
greedy
1700
x1525
245B
Internet Address
implementation
,
strings
1100
x5154
245A
System Administrator
implementation
800
x8323
244B
Undoubtedly Lucky Numbers
bitmasks
,
brute force
,
dfs and similar
1600
x4412
244A
Dividing Orange
implementation
900
x7796
243E
Matrix
data structures
3000
x172
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x211
243C
Colorado Potato Beetle
dfs and similar
,
implementation
2200
x524
243B
Hydra
graphs
,
sortings
2000
x1188
243A
The Brand New Function
bitmasks
1600
x3841
242E
XOR on Segment
bitmasks
,
data structures
2000
x8678
242D
Dispute
dfs and similar
,
graphs
,
greedy
2100
x1852
242C
King's Path
dfs and similar
,
graphs
,
hashing
,
shortest paths
1800
x8249
242B
Big Segment
implementation
,
sortings
1100
x15394
242A
Heads or Tails
brute force
,
implementation
1100
x6298
241G
Challenging Balloons
constructive algorithms
1900
x541
241F
Race
brute force
,
implementation
2300
x261
241E
Flights
graphs
,
shortest paths
2600
x1013
241D
Numbers
2900
x348
241C
Mirror Box
geometry
,
implementation
2000
x509
241B
Friends
binary search
,
bitmasks
,
data structures
,
math
2700
x760
241A
Old Peykan
greedy
1300
x2217
240F
TorCoder
data structures
2600
x1822
240E
Road Repairs
dfs and similar
,
graphs
,
greedy
2800
x354
239B
Easy Tape Programming
brute force
,
implementation
1500
x1365
239A
Two Bags of Potatoes
greedy
,
implementation
,
math
1200
x18391
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