cf
/
mirror
Problemset
Contests
Favorites
Profile
Tools
Settings
Problemset
Contests
Favorites
Profile
Complexity
Stress
Graph
Templates
Crawler
11,311
/11,320 captured
·
📄
81
PDFs
⊘
0
skipped
9 remaining
100%
Problemset
70 problems · filtered by 3 tags
Newest first
Oldest first
Rating ↑
Rating ↓
Most solved
Fewest solved
✓
#
Name
✎
Rating
↕
Solved
↕
2158D
Palindrome Flipping
brute force
constructive algorithms
graphs
implementation
shortest paths
strings
+
2000
3.4k
2132A
Homework
brute force
implementation
strings
+
800
45k
2092D
Mishkin Energizer
brute force
constructive algorithms
greedy
implementation
strings
+
1800
7k
2068F
Mascot Naming
brute force
greedy
implementation
strings
+
1900
1.5k
2065A
Skibidus and Amog'u
brute force
constructive algorithms
greedy
implementation
strings
+
800
56.9k
2048C
Kevin and Binary Strings
bitmasks
brute force
greedy
implementation
strings
+
1200
15.4k
2008E
Alternating String
brute force
data structures
dp
greedy
implementation
strings
+
1500
13.8k
1997A
Strong Password
brute force
implementation
strings
+
800
33.7k
1992E
Novice's Mistake
brute force
constructive algorithms
implementation
math
strings
+
1700
11k
1984D
''a'' String Problem
brute force
hashing
implementation
math
string suffix structures
strings
+
2000
4k
1951E
No Palindromes
brute force
constructive algorithms
divide and conquer
greedy
hashing
implementation
math
strings
+
2000
4.6k
1950E
Nearly Shortest Repeating Substring
brute force
implementation
number theory
strings
+
1500
17.7k
1923F
Shrink-Reverse
binary search
brute force
greedy
hashing
implementation
string suffix structures
strings
+
2800
544
1898A
Milica and String
brute force
implementation
strings
+
800
17.6k
1846B
Rudolph and Tic-Tac-Toe
brute force
implementation
strings
+
800
29.1k
1821C
Tear It Apart
brute force
implementation
math
strings
+
1300
16.4k
1796A
Typical Interview Problem
brute force
implementation
strings
+
800
19.7k
1795A
Two Towers
brute force
implementation
strings
+
800
24.8k
1789B
Serval and Inversion Magic
brute force
implementation
strings
two pointers
+
800
17.7k
1789F
Serval and Brain Power
bitmasks
brute force
dp
greedy
implementation
strings
+
2700
1k
1781C
Equal Frequencies
brute force
constructive algorithms
greedy
implementation
sortings
strings
+
1600
11k
1748B
Diverse Substrings
brute force
implementation
strings
+
1400
17k
1703A
YES or YES?
brute force
implementation
strings
+
800
100.3k
1703C
Cypher
brute force
implementation
strings
+
800
41.4k
1676C
Most Similar Words
brute force
greedy
implementation
math
strings
+
800
35.4k
1670B
Dorms War
brute force
implementation
strings
+
1100
13.5k
1660F1
Promising String (easy version)
brute force
implementation
math
strings
+
1700
8k
1624E
Masha-forgetful
brute force
constructive algorithms
dp
hashing
implementation
strings
+
2000
4.7k
1605C
Dominant Character
brute force
greedy
implementation
strings
+
1400
19.1k
1553B
Reverse String
brute force
dp
hashing
implementation
strings
+
1300
15.6k
1537E1
Erase and Extend (Easy Version)
binary search
brute force
dp
greedy
hashing
implementation
string suffix structures
strings
two pointers
+
1600
16.9k
1535F
String Distance
binary search
brute force
data structures
hashing
implementation
strings
+
3000
701
1506C
Double-ended Strings
brute force
implementation
strings
+
1000
37.5k
1411D
Grime Zoo
brute force
greedy
implementation
strings
+
2100
2.8k
1379A
Acacius and String
brute force
implementation
strings
+
1500
12.4k
1316B
String Modification
brute force
constructive algorithms
implementation
sortings
strings
+
1400
11.8k
1304B
Longest Palindrome
brute force
constructive algorithms
greedy
implementation
strings
+
1100
18.9k
1278A
Shuffle Hashing
brute force
implementation
strings
+
1000
18.5k
1202C
You Are Given a WASD-string...
brute force
data structures
dp
greedy
implementation
math
strings
+
2100
2.8k
1200E
Compress Words
brute force
hashing
implementation
string suffix structures
strings
+
2000
9.7k
1105B
Zuhair and Strings
brute force
implementation
strings
+
1100
10.6k
1023A
Single Wildcard Pattern Matching
brute force
implementation
strings
+
1200
9.4k
1005B
Delete from the Left
brute force
implementation
strings
+
900
27.8k
981A
Antipalindrome
brute force
implementation
strings
+
900
10.4k
903E
Swapping Characters
brute force
hashing
implementation
strings
+
2200
1.6k
883H
Palindromic Cut
brute force
implementation
strings
+
1800
1.8k
868A
Bark to Unlock
brute force
implementation
strings
+
900
10.1k
868D
Huge Strings
bitmasks
brute force
dp
implementation
strings
+
2200
1k
864B
Polycarp and Letters
brute force
implementation
strings
+
1000
10.1k
855A
Tom Riddle's Diary
brute force
implementation
strings
+
800
28.2k
822B
Crossword solving
brute force
implementation
strings
+
1000
10.3k
776A
A Serial Killer
brute force
implementation
strings
+
900
13k
754C
Vladik and chat
brute force
constructive algorithms
dp
implementation
strings
+
2200
1.1k
725C
Hidden Word
brute force
constructive algorithms
implementation
strings
+
1600
3k
697B
Barnicle
brute force
implementation
math
strings
+
1400
6k
612A
The Text Splitting
brute force
implementation
strings
+
1300
7.9k
552E
Vanya and Brackets
brute force
dp
expression parsing
greedy
implementation
strings
+
2100
1.8k
551B
ZgukistringZ
brute force
constructive algorithms
implementation
strings
+
1800
4.1k
550A
Two Substrings
brute force
dp
greedy
implementation
strings
+
1500
44.4k
548A
Mike and Fax
brute force
implementation
strings
+
1100
10.4k
505A
Mr. Kitayuta's Gift
brute force
implementation
strings
+
1100
7k
452A
Eevee
brute force
implementation
strings
+
1000
8.6k
443B
Kolya and Tandem Repeat
brute force
implementation
strings
+
1500
4.3k
385B
Bear and Strings
brute force
greedy
implementation
math
strings
+
1200
10.9k
260B
Ancient Prophesy
brute force
implementation
strings
+
1600
4.1k
245F
Log Stream Analysis
binary search
brute force
implementation
strings
+
2000
1k
236A
Boy or Girl
brute force
implementation
strings
+
800
289.6k
202A
LLPS
binary search
bitmasks
brute force
greedy
implementation
strings
+
800
20.1k
182D
Common Divisors
brute force
hashing
implementation
math
strings
+
1400
9.4k
128B
String
brute force
constructive algorithms
hashing
implementation
string suffix structures
strings
+
2100
2.9k
showing 1–70 of 70