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58 problems · filtered by 2 tags
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Name
✎
Rating
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Solved
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2150A
Incremental Path
data structures
hashing
implementation
+
1300
13.3k
2132G
Famous Choreographer
hashing
implementation
strings
+
2600
531
2063F1
Counting Is Not Fun (Easy Version)
combinatorics
data structures
dfs and similar
dp
dsu
graphs
hashing
implementation
math
trees
+
2400
1.6k
2041I
Auto Complete
binary search
data structures
hashing
implementation
sortings
strings
trees
+
2300
688
2023C
C+K+S
constructive algorithms
dfs and similar
graphs
greedy
hashing
implementation
strings
+
2400
1.4k
2020C
Bitwise Balancing
bitmasks
hashing
implementation
math
schedules
ternary search
+
1400
18.7k
1984D
''a'' String Problem
brute force
hashing
implementation
math
string suffix structures
strings
+
2000
4k
1980E
Permutation of Rows and Columns
constructive algorithms
data structures
greedy
hashing
implementation
math
matrices
sortings
+
1600
13.3k
1969F
Card Pairing
dp
greedy
hashing
implementation
+
3000
413
1951E
No Palindromes
brute force
constructive algorithms
divide and conquer
greedy
hashing
implementation
math
strings
+
2000
4.6k
1950G
Shuffling Songs
bitmasks
dfs and similar
dp
graphs
hashing
implementation
strings
+
1900
6.3k
1943B
Non-Palindromic Substring
hashing
implementation
math
strings
+
2000
4.7k
1923F
Shrink-Reverse
binary search
brute force
greedy
hashing
implementation
string suffix structures
strings
+
2800
544
1895C
Torn Lucky Ticket
brute force
dp
hashing
implementation
math
+
1400
13.3k
1840E
Character Blocking
data structures
hashing
implementation
+
1600
9.5k
1800G
Symmetree
dfs and similar
hashing
implementation
trees
+
2200
2.6k
1794E
Labeling the Tree with Distances
data structures
dp
greedy
hashing
implementation
trees
+
2400
1.6k
1773B
BinCoin
binary search
divide and conquer
hashing
implementation
probabilities
trees
+
2200
982
1704D
Magical Array
constructive algorithms
hashing
implementation
math
+
1900
5.4k
1658E
Gojou and Matrix Game
data structures
dp
games
hashing
implementation
math
number theory
sortings
+
2500
1.3k
1650C
Weight of the System of Nested Segments
greedy
hashing
implementation
sortings
+
1200
18.7k
1634F
Fibonacci Additions
brute force
data structures
hashing
implementation
math
+
2700
2k
1624E
Masha-forgetful
brute force
constructive algorithms
dp
hashing
implementation
strings
+
2000
4.7k
1574D
The Strongest Build
binary search
brute force
data structures
dfs and similar
graphs
greedy
hashing
implementation
+
2000
4.9k
1569E
Playoff Restoration
bitmasks
brute force
hashing
implementation
meet-in-the-middle
+
2600
901
1553B
Reverse String
brute force
dp
hashing
implementation
strings
+
1300
15.6k
1538E
Funny Substrings
data structures
hashing
implementation
matrices
strings
+
2100
3.3k
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
1527C
Sequence Pair Weight
hashing
implementation
math
+
1600
15.3k
1500A
Going Home
brute force
hashing
implementation
math
+
1800
9.6k
1493D
GCD of an Array
brute force
data structures
hashing
implementation
math
number theory
sortings
two pointers
+
2100
5.9k
1451C
String Equality
dp
greedy
hashing
implementation
strings
+
1400
17.4k
1393E1
Twilight and Ancient Scroll (easier version)
dp
hashing
implementation
string suffix structures
strings
+
2800
482
1393E2
Twilight and Ancient Scroll (harder version)
dp
hashing
implementation
string suffix structures
strings
two pointers
+
3200
521
1277D
Let's Play the Words?
data structures
hashing
implementation
math
+
1900
3.3k
1228D
Complete Tripartite
brute force
constructive algorithms
graphs
hashing
implementation
+
1900
5.5k
1200E
Compress Words
brute force
hashing
implementation
string suffix structures
strings
+
2000
9.7k
1182D
Complete Mirror
constructive algorithms
dfs and similar
dp
hashing
implementation
trees
+
2400
1k
1156G
Optimizer
graphs
greedy
hashing
implementation
+
2700
171
903E
Swapping Characters
brute force
hashing
implementation
strings
+
2200
1.6k
724C
Ray Tracing
greedy
hashing
implementation
math
number theory
sortings
+
1800
2.3k
639C
Bear and Polynomials
hashing
implementation
math
+
2200
1.3k
633C
Spy Syndrome 2
data structures
dp
hashing
implementation
sortings
string suffix structures
strings
+
1900
3.4k
633D
Fibonacci-ish
brute force
dp
hashing
implementation
math
+
2000
3.1k
631D
Messenger
data structures
hashing
implementation
string suffix structures
strings
+
2100
2.5k
534E
Berland Local Positioning System
constructive algorithms
greedy
hashing
implementation
+
2400
413
486B
OR in Matrix
greedy
hashing
implementation
+
1300
19.4k
463C
Gargari and Bishops
greedy
hashing
implementation
+
1900
9.3k
356E
Xenia and String Problem
dp
hashing
implementation
string suffix structures
strings
+
3000
566
212B
Polycarpus is Looking for Good Substrings
bitmasks
hashing
implementation
+
2300
399
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
82B
Sets
constructive algorithms
hashing
implementation
+
1700
2.3k
54B
Cutting Jigsaw Puzzle
hashing
implementation
+
1800
922
39J
Spelling Check
hashing
implementation
strings
+
1500
3.6k
4C
Registration System
data structures
hashing
implementation
+
1300
113.1k
2A
Winner
hashing
implementation
+
1500
31.8k
showing 1–58 of 58