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142 problems · filtered by 2 tags
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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
2233D
Goods on the Shelf
brute force
data structures
implementation
two pointers
+
1900
3.4k
2227D
Palindromex
binary search
brute force
constructive algorithms
data structures
greedy
implementation
two pointers
+
1200
13.9k
2211C1
Equal Multisets (Easy Version)
binary search
brute force
greedy
two pointers
+
1300
10.4k
2204F
Sum of Fractions
binary search
brute force
combinatorics
data structures
greedy
math
number theory
two pointers
+
2200
1.3k
2196B
Another Problem about Beautiful Pairs
brute force
math
two pointers
+
1600
9.3k
2163C
Monopati
brute force
combinatorics
dp
math
two pointers
+
1500
9.6k
2159B
Rectangles
brute force
data structures
dp
dsu
greedy
implementation
two pointers
+
2100
3.4k
2159D1
Inverse Minimum Partition (Easy Version)
binary search
brute force
dp
geometry
greedy
math
two pointers
+
2500
1.7k
2143A
All Lengths Subtraction
brute force
two pointers
+
800
21.5k
2125E
Sets of Complementary Sums
brute force
combinatorics
dp
math
two pointers
+
2500
1.4k
2121F
Yamakasi
binary search
brute force
data structures
greedy
two pointers
+
1800
8.3k
2112C
Coloring Game
binary search
brute force
greedy
two pointers
+
1300
18.2k
2111C
Equal Values
brute force
greedy
two pointers
+
1100
20k
2101C
23 Kingdom
binary search
brute force
data structures
greedy
ternary search
two pointers
+
2200
3.8k
2091E
Interesting Ratio
brute force
math
number theory
two pointers
+
1300
20.2k
2074D
Counting Points
brute force
data structures
geometry
implementation
two pointers
+
1400
12.4k
2064D
Eating
binary search
bitmasks
brute force
data structures
dp
greedy
trees
two pointers
+
1900
6k
2063D
Game With Triangles
binary search
brute force
data structures
geometry
greedy
implementation
math
ternary search
two pointers
+
2000
5.2k
2055C
The Trail
brute force
constructive algorithms
greedy
math
two pointers
+
1400
17.6k
2048D
Kevin and Competition Memories
binary search
brute force
data structures
greedy
sortings
two pointers
+
1600
8.5k
2040D
Non Prime Tree
brute force
constructive algorithms
dfs and similar
greedy
number theory
trees
two pointers
+
1900
5.9k
2038L
Bridge Renovation
brute force
dp
greedy
math
two pointers
+
1400
8.3k
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
2003E2
Turtle and Inversions (Hard Version)
brute force
data structures
divide and conquer
dp
greedy
math
two pointers
+
2700
654
2003F
Turtle and Three Sequences
brute force
data structures
dp
greedy
math
probabilities
two pointers
+
2800
838
1995B1
Bouquet (Easy Version)
binary search
brute force
greedy
sortings
two pointers
+
1100
21.3k
1992F
Valuable Cards
brute force
dp
greedy
number theory
two pointers
+
1900
7.7k
1990F
Polygonal Segments
brute force
data structures
divide and conquer
dp
greedy
two pointers
+
2800
464
1989D
Smithing Skill
brute force
data structures
dp
greedy
math
sortings
two pointers
+
1900
7.2k
1986D
Mathematical Problem
brute force
dp
greedy
implementation
math
two pointers
+
1400
18.2k
1974F
Cutting Game
binary search
brute force
data structures
implementation
sortings
two pointers
+
1900
4.5k
1972A
Contest Proposal
brute force
greedy
two pointers
+
800
26.2k
1948D
Tandem Repeats?
brute force
strings
two pointers
+
1700
12.8k
1932C
LR-remainders
brute force
data structures
implementation
math
two pointers
+
1400
19.3k
1927D
Find the Different Ones!
binary search
brute force
data structures
dp
dsu
greedy
two pointers
+
1300
35.3k
1904C
Array Game
binary search
brute force
data structures
sortings
two pointers
+
1400
25.2k
1895E
Infinite Card Game
binary search
brute force
data structures
dfs and similar
dp
dsu
games
graphs
greedy
sortings
two pointers
+
2300
1.9k
1887C
Minimum Array
binary search
brute force
constructive algorithms
data structures
greedy
hashing
two pointers
+
2400
2.3k
1863E
Speedrun
brute force
dfs and similar
dp
graphs
greedy
math
sortings
two pointers
+
2100
3.3k
1858D
Trees and Segments
brute force
data structures
dp
greedy
two pointers
+
2200
3.3k
1845D
Rating System
binary search
brute force
data structures
dp
dsu
greedy
math
two pointers
+
1800
9.2k
1843E
Tracking Segments
binary search
brute force
data structures
two pointers
+
1600
18.8k
1835B
Lottery
binary search
brute force
greedy
math
two pointers
+
2500
1.1k
1832B
Maximum Sum
brute force
sortings
two pointers
+
1100
38.1k
1819D
Misha and Apples
brute force
data structures
dp
two pointers
+
2800
904
1814D
Balancing Weapons
binary search
brute force
data structures
math
two pointers
+
2500
1.1k
1808D
Petya, Petya, Petr, and Palindromes
binary search
brute force
data structures
two pointers
+
2100
2.8k
1805E
There Should Be a Lot of Maximums
brute force
data structures
dfs and similar
dp
trees
two pointers
+
2300
2k
1797E
Li Hua and Array
brute force
data structures
dsu
math
number theory
two pointers
+
2300
1.7k
1792C
Min Max Sort
binary search
brute force
greedy
math
two pointers
+
1500
17.1k
1789B
Serval and Inversion Magic
brute force
implementation
strings
two pointers
+
800
17.7k
1788D
Moving Dots
binary search
brute force
combinatorics
math
two pointers
+
2000
4.8k
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
1771E
Hossam and a Letter
brute force
dp
implementation
two pointers
+
2500
852
1766E
Decomposition
binary search
brute force
data structures
divide and conquer
dp
two pointers
+
2300
1.5k
1761E
Make It Connected
binary search
brute force
constructive algorithms
dsu
graphs
greedy
matrices
trees
two pointers
+
2400
2.2k
1758D
Range = √Sum
binary search
brute force
constructive algorithms
math
two pointers
+
1800
8.6k
1753F
Minecraft Series
brute force
two pointers
+
3500
257
1741C
Minimize the Thickness
brute force
greedy
math
two pointers
+
1100
19.6k
1732C2
Sheikh (Hard Version)
binary search
bitmasks
brute force
greedy
implementation
two pointers
+
2100
3.2k
1731D
Valiant's New Map
binary search
brute force
data structures
dp
two pointers
+
1700
8.7k
1728G
Illumination
binary search
bitmasks
brute force
combinatorics
dp
math
two pointers
+
2700
669
1720D1
Xor-Subsequence (easy version)
bitmasks
brute force
dp
strings
trees
two pointers
+
1800
6.8k
1712E1
LCM Sum (easy version)
binary search
brute force
combinatorics
math
number theory
two pointers
+
2300
2.5k
1712E2
LCM Sum (hard version)
brute force
data structures
math
number theory
two pointers
+
2500
1.7k
1706D2
Chopping Carrots (Hard Version)
brute force
constructive algorithms
data structures
dp
greedy
math
number theory
two pointers
+
2400
2k
1698E
PermutationForces II
brute force
combinatorics
greedy
sortings
trees
two pointers
+
2300
1.9k
1696H
Maximum Product?
brute force
combinatorics
dp
greedy
implementation
math
two pointers
+
3500
215
1689A
Lex String
brute force
greedy
implementation
sortings
two pointers
+
800
17.8k
1684E
MEX vs DIFF
binary search
brute force
constructive algorithms
data structures
greedy
two pointers
+
2100
3.7k
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
1646B
Quality vs Quantity
brute force
constructive algorithms
greedy
sortings
two pointers
+
800
22.9k
1641D
Two Arrays
bitmasks
brute force
combinatorics
greedy
hashing
math
two pointers
+
2700
1.6k
1638F
Two Posters
brute force
data structures
greedy
two pointers
+
3200
277
1619H
Permutation and Queries
brute force
data structures
divide and conquer
two pointers
+
2400
1.5k
1582C
Grandma Capa Knits a Scarf
brute force
data structures
greedy
strings
two pointers
+
1200
25.2k
1582F2
Korney Korneevich and XOR (hard version)
binary search
brute force
dp
greedy
two pointers
+
2400
2.2k
1572B
Xor of 3
brute force
constructive algorithms
greedy
two pointers
+
2500
2k
1559D2
Mocha and Diana (Hard Version)
brute force
constructive algorithms
dfs and similar
dsu
graphs
greedy
trees
two pointers
+
2500
3.2k
1558B
Up the Strip
brute force
dp
math
number theory
two pointers
+
1900
5.3k
1550E
Stringforces
binary search
bitmasks
brute force
dp
strings
two pointers
+
2500
1.9k
1547F
Array Stabilization (GCD version)
binary search
brute force
data structures
divide and conquer
number theory
two pointers
+
1900
7.2k
1537E1
Erase and Extend (Easy Version)
binary search
brute force
dp
greedy
hashing
implementation
string suffix structures
strings
two pointers
+
1600
16.9k
1519D
Maximum Sum of Products
brute force
dp
implementation
math
two pointers
+
1600
17.9k
1511G
Chips on a Board
bitmasks
brute force
data structures
dp
games
two pointers
+
2700
988
1500C
Matrix Sorting
bitmasks
brute force
constructive algorithms
greedy
two pointers
+
2600
983
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
1469E
A Bit Similar
bitmasks
brute force
hashing
string suffix structures
strings
two pointers
+
2400
2.2k
1452E
Two Editorials
brute force
dp
greedy
sortings
two pointers
+
2500
1.8k
1443E
Long Permutation
brute force
math
two pointers
+
2400
1.6k
1438E
Yurii Can Do Everything
binary search
bitmasks
brute force
constructive algorithms
divide and conquer
two pointers
+
2500
1.5k
1431H
Rogue-like Game
*special
brute force
greedy
two pointers
+
2600
82
1419D2
Sage's Birthday (hard version)
binary search
brute force
constructive algorithms
greedy
sortings
two pointers
+
1500
17.6k
1413C
Perform Easily
binary search
brute force
dp
implementation
sortings
two pointers
+
1900
6.3k
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