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Name
696D
Legen...
data structures
,
dp
,
matrices
,
strings
2500
x1236
691C
Exponential notation
implementation
,
strings
1800
x2486
691B
s-palindrome
implementation
,
strings
1600
x4728
682D
Alyona and Strings
dp
,
strings
1900
x3174
677C
Vanya and Label
bitmasks
,
combinatorics
,
implementation
,
strings
1500
x6287
676C
Vasya and String
binary search
,
dp
,
strings
,
two pointers
1500
x18186
672B
Different is Good
constructive algorithms
,
implementation
,
strings
1000
x17079
670F
Restore a Number
brute force
,
constructive algorithms
,
strings
2300
x847
670E
Correct Bracket Sequence Editor
data structures
,
dsu
,
strings
1700
x3155
666C
Codeword
combinatorics
,
strings
2500
x767
666A
Reberland Linguistics
dp
,
implementation
,
strings
1800
x3416
665E
Beautiful Subarrays
data structures
,
divide and conquer
,
strings
,
trees
2100
x2888
665C
Simple Strings
dp
,
greedy
,
strings
1300
x9234
653F
Paper task
data structures
,
string suffix structures
,
strings
2600
x957
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x4893
645E
Intellectual Inquiry
dp
,
greedy
,
strings
2200
x1221
644C
Hostname Aliases
*special problem
,
binary search
,
data structures
,
implementation
,
sortings
,
strings
2100
x908
638B
Making Genome in Berland
*special problem
,
dfs and similar
,
strings
1500
x1932
633C
Spy Syndrome 2
data structures
,
dp
,
hashing
,
implementation
,
sortings
,
string suffix structures
,
strings
1900
x2656
632C
The Smallest String Concatenation
sortings
,
strings
1700
x7262
631D
Messenger
data structures
,
hashing
,
implementation
,
string suffix structures
,
strings
2100
x1995
629C
Famil Door and Brackets
dp
,
strings
2000
x2739
628C
Bear and String Distance
greedy
,
strings
1300
x5683
625B
War of the Corporations
constructive algorithms
,
greedy
,
strings
1200
x10105
620F
Xors on Segments
data structures
,
strings
,
trees
2800
x702
616F
Expensive Strings
string suffix structures
,
strings
2700
x553
616A
Comparing Two Long Integers
implementation
,
strings
900
x9572
615C
Running Track
dp
,
greedy
,
strings
,
trees
2000
x2254
613E
Puzzle Lover
dp
,
hashing
,
strings
3200
x455
612A
The Text Splitting
brute force
,
implementation
,
strings
1300
x7032
611D
New Year and Ancient Prophecy
dp
,
hashing
,
strings
2000
x2515
610E
Alphabet Permutations
data structures
,
strings
2500
x817
608B
Hamming Distance Sum
combinatorics
,
strings
1500
x6489
607C
Marbles
hashing
,
strings
2500
x779
601D
Acyclic Organic Compounds
data structures
,
dfs and similar
,
dsu
,
hashing
,
strings
,
trees
2400
x1090
600C
Make Palindrome
constructive algorithms
,
greedy
,
strings
1800
x5713
600A
Extract Numbers
implementation
,
strings
1600
x4913
598B
Queries on a String
implementation
,
strings
1300
x10601
596E
Wilbur and Strings
dfs and similar
,
dp
,
graphs
,
strings
2500
x388
594E
Cutting the Line
string suffix structures
,
strings
3100
x155
591B
Rebranding
implementation
,
strings
1200
x8138
590E
Birthday
graph matchings
,
strings
3200
x744
587F
Duff is Mad
data structures
,
strings
3000
x993
585F
Digits of Number Pi
dp
,
implementation
,
strings
3200
x637
584C
Marina and Vasya
constructive algorithms
,
greedy
,
strings
1700
x6072
580E
Kefa and Watch
data structures
,
hashing
,
strings
2500
x1952
566A
Matching Names
dfs and similar
,
strings
,
trees
2300
x870
559B
Equivalent Strings
divide and conquer
,
hashing
,
sortings
,
strings
1700
x10391
558E
A Simple Task
data structures
,
sortings
,
strings
2300
x5614
557E
Ann and Half-Palindrome
data structures
,
dp
,
graphs
,
string suffix structures
,
strings
,
trees
2300
x1055
554B
Ohana Cleans Up
brute force
,
greedy
,
strings
1200
x9693
554A
Kyoya and Photobooks
brute force
,
math
,
strings
900
x12733
552E
Vanya and Brackets
brute force
,
dp
,
expression parsing
,
greedy
,
implementation
,
strings
2100
x1410
551B
ZgukistringZ
brute force
,
constructive algorithms
,
implementation
,
strings
1800
x3759
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x36398
549A
Face Detection
implementation
,
strings
900
x9354
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x9837
547E
Mike and Friends
data structures
,
string suffix structures
,
strings
,
trees
2800
x1946
544A
Set of Strings
implementation
,
strings
1100
x7748
535D
Tavas and Malekas
greedy
,
hashing
,
string suffix structures
,
strings
1900
x3785
533F
Encoding
hashing
,
string suffix structures
,
strings
2400
x866
533E
Correcting Mistakes
constructive algorithms
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x2175
533B
Work Group
dfs and similar
,
dp
,
graphs
,
strings
,
trees
2000
x2304
526D
Om Nom and Necklace
hashing
,
string suffix structures
,
strings
2200
x2098
525B
Pasha and String
constructive algorithms
,
greedy
,
math
,
strings
1400
x9197
525A
Vitaliy and Pie
greedy
,
hashing
,
strings
1100
x13910
524F
And Yet Another Bracket Sequence
data structures
,
greedy
,
hashing
,
string suffix structures
,
strings
2700
x521
520C
DNA Alignment
math
,
strings
1500
x4089
520A
Pangram
implementation
,
strings
800
x90266
518B
Tanya and Postcard
greedy
,
implementation
,
strings
1400
x7812
518A
Vitaly and Strings
constructive algorithms
,
strings
1600
x9117
514C
Watto and Mechanism
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2000
x6505
509E
Pretty Song
math
,
strings
2000
x1771
508B
Anton and currency you all know
greedy
,
math
,
strings
1300
x22109
506E
Mr. Kitayuta's Gift
combinatorics
,
dp
,
matrices
,
strings
3000
x685
505A
Mr. Kitayuta's Gift
brute force
,
implementation
,
strings
1100
x6601
501B
Misha and Changing Handles
data structures
,
dsu
,
strings
1100
x15646
499B
Lecture
implementation
,
strings
1000
x37595
494B
Obsessive String
dp
,
strings
2000
x2583
490C
Hacking Cypher
brute force
,
math
,
number theory
,
strings
1700
x8911
477D
Dreamoon and Binary
dp
,
strings
2700
x501
476E
Dreamoon and Strings
dp
,
strings
2200
x1759
471D
MUH and Cube Walls
string suffix structures
,
strings
1800
x7489
467D
Fedor and Essay
dfs and similar
,
dp
,
graphs
,
hashing
,
strings
2400
x1768
464A
No to Palindromes!
greedy
,
strings
1700
x5825
461E
Appleman and a Game
binary search
,
shortest paths
,
strings
3000
x366
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
1900
x5685
452E
Three strings
data structures
,
dsu
,
string suffix structures
,
strings
2400
x1039
452A
Eevee
brute force
,
implementation
,
strings
1000
x7905
448B
Suffix Structures
implementation
,
strings
1400
x15667
444D
DZY Loves Strings
binary search
,
hashing
,
strings
,
two pointers
2500
x755
443B
Kolya and Tandem Repeat
brute force
,
implementation
,
strings
1500
x3985
432D
Prefixes and Suffixes
dp
,
string suffix structures
,
strings
,
two pointers
2000
x8314
427D
Match & Catch
dp
,
string suffix structures
,
strings
2200
x2103
412C
Pattern
implementation
,
strings
1200
x3855
386C
Diverse Substrings
dp
,
strings
,
two pointers
2000
x745
385B
Bear and Strings
brute force
,
greedy
,
implementation
,
math
,
strings
1200
x9547
358B
Dima and Text Messages
brute force
,
strings
1500
x3683
356E
Xenia and String Problem
dp
,
hashing
,
implementation
,
string suffix structures
,
strings
3000
x400
346B
Lucky Common Subsequence
dp
,
strings
2000
x3345
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