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170 problems · filtered by 2 tags
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2249C
Double-Rift Dial
data structures
dfs and similar
dsu
implementation
two pointers
+
unrated
1k
2242C
Unstable Elements
brute force
data structures
implementation
sortings
two pointers
+
1300
10.5k
2236G
Criterion in Burlandia
binary search
bitmasks
brute force
data structures
dfs and similar
divide and conquer
implementation
trees
two pointers
+
2600
385
2234C
Vessels, Heights and Two Versions (Easy Version)
dfs and similar
dsu
greedy
implementation
two pointers
+
1200
12k
2234F
Vessels, Heights and Two Versions (Hard Version)
data structures
dfs and similar
dsu
greedy
implementation
two pointers
+
1900
2.3k
2233D
Goods on the Shelf
brute force
data structures
implementation
two pointers
+
1900
3.4k
2231D
Maximum Prefix Sums
constructive algorithms
greedy
implementation
two pointers
+
1900
3.7k
2230E
Minimum Influence
binary search
data structures
greedy
implementation
math
sortings
two pointers
+
2100
1.5k
2227D
Palindromex
binary search
brute force
constructive algorithms
data structures
greedy
implementation
two pointers
+
1200
13.9k
2197B
Array and Permutation
implementation
schedules
sortings
two pointers
+
1100
16.9k
2190C
Comparable Permutations
greedy
implementation
interactive
sortings
two pointers
+
2300
1.4k
2185D
OutOfMemoryError
data structures
implementation
math
two pointers
+
1100
21.9k
2185E
The Robotic Rush
binary search
greedy
implementation
two pointers
+
1500
11k
2164D
Copy String
greedy
implementation
strings
two pointers
+
1800
6.2k
2159B
Rectangles
brute force
data structures
dp
dsu
greedy
implementation
two pointers
+
2100
3.4k
2103D
Local Construction
constructive algorithms
dfs and similar
implementation
two pointers
+
2000
4.1k
2103E
Keep the Sum
constructive algorithms
implementation
two pointers
+
2600
622
2101D
Mani and Segments
data structures
implementation
sortings
two pointers
+
2500
1.7k
2096F
Wonderful Impostors
data structures
implementation
two pointers
+
3100
496
2084E
Blossom
binary search
combinatorics
dp
implementation
math
two pointers
+
2400
1.8k
2074D
Counting Points
brute force
data structures
geometry
implementation
two pointers
+
1400
12.4k
2063D
Game With Triangles
binary search
brute force
data structures
geometry
greedy
implementation
math
ternary search
two pointers
+
2000
5.2k
2042D
Recommendations
data structures
implementation
sortings
two pointers
+
1900
5.5k
2034B
Rakhsh's Revival
data structures
greedy
implementation
two pointers
+
1000
16.1k
2032D
Genokraken
constructive algorithms
data structures
graphs
greedy
implementation
interactive
trees
two pointers
+
1800
6.3k
2031D
Penchick and Desert Rabbit
binary search
data structures
dfs and similar
dp
dsu
greedy
implementation
two pointers
+
1700
10.1k
2030F
Orangutan Approved Subarrays
binary search
data structures
dp
greedy
implementation
two pointers
+
2400
1.2k
2027D1
The Endspeaker (Easy Version)
binary search
dp
graphs
greedy
implementation
two pointers
+
1700
7.1k
2027D2
The Endspeaker (Hard Version)
binary search
data structures
dp
greedy
implementation
two pointers
+
2200
1.9k
2025C
New Game
binary search
brute force
greedy
implementation
sortings
two pointers
+
1300
19.4k
2025D
Attribute Checks
brute force
data structures
dp
implementation
math
two pointers
+
1800
8k
2018B
Speedbreaker
binary search
data structures
dp
greedy
implementation
two pointers
+
1900
5.3k
2000D
Right Left Wrong
greedy
implementation
two pointers
+
1200
29.6k
1986D
Mathematical Problem
brute force
dp
greedy
implementation
math
two pointers
+
1400
18.2k
1979E
Manhattan Triangle
binary search
constructive algorithms
data structures
geometry
implementation
two pointers
+
2400
1.9k
1976C
Job Interview
binary search
dp
greedy
implementation
two pointers
+
1600
12.6k
1976D
Invertible Bracket Sequences
binary search
combinatorics
data structures
divide and conquer
implementation
two pointers
+
2000
5.9k
1974F
Cutting Game
binary search
brute force
data structures
implementation
sortings
two pointers
+
1900
4.5k
1967D
Long Way to be Non-decreasing
binary search
dfs and similar
graphs
implementation
shortest paths
two pointers
+
2800
998
1949J
Amanda the Amoeba
graphs
implementation
trees
two pointers
+
2600
550
1936B
Pinball
binary search
data structures
implementation
math
two pointers
+
2000
3.6k
1932C
LR-remainders
brute force
data structures
implementation
math
two pointers
+
1400
19.3k
1918D
Blocking Elements
binary search
data structures
dp
implementation
two pointers
+
1900
6.4k
1905D
Cyclic MEX
data structures
implementation
math
two pointers
+
2000
4.8k
1873D
1D Eraser
greedy
implementation
two pointers
+
800
44.1k
1870C
Colorful Table
binary search
data structures
dp
implementation
math
two pointers
+
1300
13.3k
1851G
Vlad and the Mountains
binary search
data structures
dsu
graphs
implementation
sortings
trees
two pointers
+
2000
4.2k
1840A
Cipher Shifer
implementation
strings
two pointers
+
800
38.7k
1833F
Ira and Flamenco
combinatorics
constructive algorithms
data structures
implementation
math
sortings
two pointers
+
1700
10.6k
1819B
The Butcher
geometry
greedy
implementation
sortings
two pointers
+
1900
4.3k
1793D
Moscow Gorillas
binary search
dp
greedy
implementation
math
two pointers
+
1800
7.2k
1791C
Prepend and Append
implementation
two pointers
+
800
78.8k
1789B
Serval and Inversion Magic
brute force
implementation
strings
two pointers
+
800
17.7k
1781E
Rectangle Shrinking
binary search
brute force
data structures
greedy
implementation
two pointers
+
2300
1.5k
1774D
Same Count One
brute force
constructive algorithms
greedy
implementation
two pointers
+
1600
9.4k
1772G
Gaining Rating
binary search
greedy
implementation
math
sortings
two pointers
+
2200
1.6k
1771E
Hossam and a Letter
brute force
dp
implementation
two pointers
+
2500
852
1760D
Challenging Valleys
implementation
two pointers
+
1000
27.4k
1744C
Traffic Light
binary search
implementation
two pointers
+
1000
47.1k
1732C2
Sheikh (Hard Version)
binary search
bitmasks
brute force
greedy
implementation
two pointers
+
2100
3.2k
1719C
Fighting Tournament
binary search
data structures
implementation
two pointers
+
1400
14.5k
1701C
Schedule Management
binary search
greedy
implementation
two pointers
+
1400
25k
1697C
awoo's Favorite Problem
binary search
constructive algorithms
data structures
greedy
implementation
strings
two pointers
+
1400
15.9k
1696H
Maximum Product?
brute force
combinatorics
dp
greedy
implementation
math
two pointers
+
3500
215
1692E
Binary Deque
binary search
implementation
two pointers
+
1200
35.5k
1691B
Shoe Shuffling
constructive algorithms
greedy
implementation
two pointers
+
1000
37.6k
1691D
Max GEQ Sum
binary search
constructive algorithms
data structures
divide and conquer
implementation
two pointers
+
1800
7.7k
1690D
Black and White Stripe
implementation
two pointers
+
1000
50.1k
1689A
Lex String
brute force
greedy
implementation
sortings
two pointers
+
800
17.8k
1676F
Longest Strike
data structures
greedy
implementation
sortings
two pointers
+
1300
20.6k
1672D
Cyclic Rotation
constructive algorithms
greedy
implementation
two pointers
+
1700
7k
1665E
MinimizOR
bitmasks
brute force
data structures
divide and conquer
greedy
implementation
two pointers
+
2500
1.9k
1660D
Maximum Product Strikes Back
brute force
implementation
math
two pointers
+
1600
12k
1659D
Reverse Sort Sum
constructive algorithms
data structures
greedy
implementation
math
two pointers
+
1900
4.5k
1628A
Meximum Array
binary search
constructive algorithms
greedy
implementation
math
two pointers
+
1400
17.2k
1627E
Not Escaping
data structures
dp
implementation
shortest paths
two pointers
+
2200
2.9k
1626C
Monsters And Spells
binary search
data structures
dp
greedy
implementation
math
two pointers
+
1700
12k
1609C
Complex Market Analysis
binary search
dp
implementation
number theory
schedules
two pointers
+
1400
10.5k
1605E
Array Equalizer
binary search
greedy
implementation
math
number theory
sortings
two pointers
+
2400
1.2k
1598C
Delete Two Elements
data structures
dp
implementation
math
two pointers
+
1200
23.9k
1569D
Inconvenient Pairs
binary search
data structures
implementation
sortings
two pointers
+
1900
4.6k
1566D2
Seating Arrangements (hard version)
data structures
greedy
implementation
sortings
two pointers
+
1600
8.4k
1550D
Excellent Arrays
binary search
combinatorics
constructive algorithms
implementation
math
sortings
two pointers
+
2300
2.1k
1547E
Air Conditioners
data structures
dp
implementation
shortest paths
sortings
two pointers
+
1500
16.6k
1539D
PriceFixed
binary search
greedy
implementation
sortings
two pointers
+
1600
12.9k
1537E1
Erase and Extend (Easy Version)
binary search
brute force
dp
greedy
hashing
implementation
string suffix structures
strings
two pointers
+
1600
16.9k
1535C
Unstable String
binary search
dp
greedy
implementation
strings
two pointers
+
1400
17.9k
1519D
Maximum Sum of Products
brute force
dp
implementation
math
two pointers
+
1600
17.9k
1517E
Group Photo
binary search
data structures
implementation
two pointers
+
2500
1.1k
1508A
Binary Literature
constructive algorithms
greedy
implementation
strings
two pointers
+
1900
6.7k
1494C
1D Sokoban
binary search
dp
greedy
implementation
two pointers
+
1900
5.8k
1493D
GCD of an Array
brute force
data structures
hashing
implementation
math
number theory
sortings
two pointers
+
2100
5.9k
1487E
Cheap Dinner
brute force
data structures
graphs
greedy
implementation
sortings
two pointers
+
2000
5.2k
1470E
Strange Permutation
binary search
combinatorics
data structures
dp
graphs
implementation
two pointers
+
3200
981
1469C
Building a Fence
dp
greedy
implementation
two pointers
+
1600
11.8k
1462A
Favorite Sequence
implementation
two pointers
+
800
49.9k
1462E2
Close Tuples (hard version)
binary search
combinatorics
implementation
math
sortings
two pointers
+
1700
11.6k
1450D
Rating Compression
binary search
data structures
greedy
implementation
two pointers
+
1800
5.9k
1431B
Polycarp and the Language of Gods
*special
implementation
two pointers
+
1400
1.1k
1416A
k-Amazing Numbers
binary search
data structures
implementation
two pointers
+
1500
17.4k
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