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2023 Post World Finals Online ICPC Challenge powered by Huawei
10 days
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Codeforces Round 944 (Div. 4)
03:26:35
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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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Problems
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Custom test
Problems
#
Name
118B
Present from Lena
constructive algorithms
,
implementation
1000
x28354
1256A
Payment Without Change
math
1000
x28436
139A
Petr and Book
implementation
1000
x28669
1359A
Berland Poker
brute force
,
greedy
,
math
1000
x28762
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithms
,
strings
1000
x28926
1182A
Filling Shapes
dp
,
math
1000
x29294
1326A
Bad Ugly Numbers
constructive algorithms
,
number theory
1000
x29454
1141A
Game 23
implementation
,
math
1000
x29622
1473B
String LCM
brute force
,
math
,
number theory
,
strings
1000
x29690
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x30242
1520C
Not Adjacent Matrix
constructive algorithms
1000
x30639
268B
Buttons
implementation
,
math
1000
x30878
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x31135
450A
Jzzhu and Children
implementation
1000
x32538
1353C
Board Moves
math
1000
x34197
1476A
K-divisible Sum
binary search
,
constructive algorithms
,
greedy
,
math
1000
x35023
1521A
Nastia and Nearly Good Numbers
constructive algorithms
,
math
,
number theory
1000
x35331
124A
The number of positions
math
1000
x36312
499B
Lecture
implementation
,
strings
1000
x37496
577A
Multiplication Table
implementation
,
number theory
1000
x38072
1342A
Road To Zero
greedy
,
math
1000
x38362
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x39898
476A
Dreamoon and Stairs
implementation
,
math
1000
x41153
584A
Olesya and Rodion
math
1000
x42874
1374C
Move Brackets
greedy
,
strings
1000
x43431
379A
New Year Candles
implementation
1000
x44476
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50264
43A
Football
strings
1000
x52161
579A
Raising Bacteria
bitmasks
1000
x56328
339B
Xenia and Ringroad
implementation
1000
x66435
230A
Dragons
greedy
,
sortings
1000
x74403
131A
cAPS lOCK
implementation
,
strings
1000
x81279
479A
Expression
brute force
,
math
1000
x88754
122A
Lucky Division
brute force
,
number theory
1000
x116184
58A
Chat room
greedy
,
strings
1000
x122336
69A
Young Physicist
implementation
,
math
1000
x155210
118A
String Task
implementation
,
strings
1000
x181424
1A
Theatre Square
math
1000
x246038
648A
Наибольший подъем
constructive algorithms
,
implementation
900
x573
1488A
From Zero To Y
*special problem
,
math
900
x1335
130A
Hexagonal numbers
*special problem
,
implementation
900
x1522
1267B
Balls of Buma
900
x3787
1089L
Lazyland
900
x3828
412A
Poster
greedy
,
implementation
900
x4305
299B
Ksusha the Squirrel
brute force
,
implementation
900
x5123
412B
Network Configuration
greedy
,
sortings
900
x5269
48A
Rock-paper-scissors
implementation
,
schedules
900
x5625
1057A
Bmail Computer Network
*special problem
,
dfs and similar
,
trees
900
x5759
45A
Codecraft III
implementation
900
x6325
847G
University Classes
implementation
900
x6521
793A
Oleg and shares
implementation
,
math
900
x6558
10A
Power Consumption Calculation
implementation
900
x6681
1032A
Kitchen Utensils
900
x6786
1666D
Deletive Editing
greedy
900
x6871
137A
Postcards and photos
implementation
900
x6905
267A
Subtractions
math
,
number theory
900
x7139
729A
Interview with Oleg
implementation
,
strings
900
x7269
244A
Dividing Orange
implementation
900
x7741
1468N
Waste Sorting
greedy
,
implementation
900
x7889
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8004
820A
Mister B and Book Reading
implementation
900
x8028
424A
Squats
implementation
900
x8192
52A
123-sequence
implementation
900
x8296
916A
Jamie and Alarm Snooze
brute force
,
implementation
,
math
900
x8477
834A
The Useless Toy
implementation
900
x8494
868A
Bark to Unlock
brute force
,
implementation
,
strings
900
x8521
747B
Mammoth's Genome Decoding
implementation
,
strings
900
x8540
810A
Straight <<A>>
implementation
,
math
900
x8713
263B
Squares
greedy
,
implementation
,
sortings
900
x8717
415A
Mashmokh and Lights
implementation
900
x8784
765A
Neverending competitions
implementation
,
math
900
x8855
879A
Borya's Diagnosis
implementation
900
x8950
975A
Aramic script
implementation
,
strings
900
x8969
376A
Lever
implementation
,
math
900
x9028
981A
Antipalindrome
brute force
,
implementation
,
strings
900
x9046
246A
Buggy Sorting
constructive algorithms
,
greedy
,
sortings
900
x9050
808A
Lucky Year
implementation
900
x9080
622B
The Time
implementation
900
x9094
631A
Interview
brute force
,
implementation
900
x9130
876A
Trip For Meal
math
900
x9239
549A
Face Detection
implementation
,
strings
900
x9348
44A
Indian Summer
implementation
900
x9470
387A
George and Sleep
implementation
900
x9518
616A
Comparing Two Long Integers
implementation
,
strings
900
x9536
194A
Exams
implementation
,
math
900
x9630
465A
inc ARG
implementation
900
x9832
586A
Alena's Schedule
implementation
900
x9893
961A
Tetris
implementation
900
x9898
1737A
Ela Sorting Books
greedy
,
implementation
,
strings
900
x9947
870A
Search for Pretty Integers
brute force
,
implementation
900
x9953
863A
Quasi-palindrome
brute force
,
implementation
900
x9966
801B
Valued Keys
constructive algorithms
,
greedy
,
strings
900
x10014
893A
Chess For Three
implementation
900
x10020
94A
Restoring Password
implementation
,
strings
900
x10151
989A
A Blend of Springtime
implementation
,
strings
900
x10158
373A
Collecting Beats is Fun
implementation
900
x10231
814A
An abandoned sentiment from past
constructive algorithms
,
greedy
,
implementation
,
sortings
900
x10250
980A
Links and Pearls
implementation
,
math
900
x10259
168A
Wizards and Demonstration
implementation
,
math
900
x10286
745A
Hongcow Learns the Cyclic Shift
implementation
,
strings
900
x10300
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