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197 problems · filtered by 3 tags
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Name
✎
Rating
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Solved
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2242E
Product of Closures
bitmasks
brute force
constructive algorithms
greedy
implementation
math
number theory
+
2200
1.4k
2231D
Maximum Prefix Sums
constructive algorithms
greedy
implementation
two pointers
+
1900
3.7k
2227D
Palindromex
binary search
brute force
constructive algorithms
data structures
greedy
implementation
two pointers
+
1200
13.9k
2194D
Table Cut
constructive algorithms
greedy
implementation
+
1600
8.6k
2183D2
Tree Coloring (Hard Version)
combinatorics
constructive algorithms
data structures
dfs and similar
greedy
implementation
trees
+
2100
2.6k
2182A
New Year String
constructive algorithms
greedy
implementation
strings
+
800
26.2k
2178D
Xmas or Hysteria
constructive algorithms
greedy
implementation
math
+
1700
7k
2171F
Rae Taylor and Trees (hard version)
binary search
constructive algorithms
data structures
dp
dsu
greedy
implementation
trees
+
1600
7.6k
2170D
Almost Roman
constructive algorithms
greedy
implementation
+
2200
1.8k
2167C
Isamatdin and His Magic Wand!
constructive algorithms
greedy
implementation
sortings
+
800
37.1k
2163B
Siga ta Kymata
constructive algorithms
greedy
implementation
math
+
1700
9.5k
2157C
Meximum Array 2
constructive algorithms
greedy
implementation
math
+
1400
10.9k
2153C
Symmetrical Polygons
constructive algorithms
geometry
greedy
implementation
sortings
+
1500
12.3k
2147C
Rabbits
constructive algorithms
dp
greedy
implementation
+
1500
11.3k
2134D
Sliding Tree
constructive algorithms
dfs and similar
greedy
implementation
trees
+
2300
3.8k
2113D
Cheater
binary search
constructive algorithms
greedy
implementation
+
2200
3k
2111D
Creating a Schedule
constructive algorithms
data structures
greedy
implementation
sortings
+
1400
12.3k
2108B
SUMdamental Decomposition
bitmasks
constructive algorithms
greedy
implementation
math
+
1300
14.9k
2108E
Spruce Dispute
constructive algorithms
dfs and similar
graphs
greedy
implementation
shortest paths
trees
+
2600
922
2092D
Mishkin Energizer
brute force
constructive algorithms
greedy
implementation
strings
+
1800
7k
2084C
You Soared Afar With Grace
constructive algorithms
data structures
greedy
implementation
+
1400
12k
2081C
Quaternary Matrix
bitmasks
constructive algorithms
greedy
implementation
matrices
+
2700
372
2078B
Vicious Labyrinth
constructive algorithms
graphs
greedy
implementation
math
+
1100
18.6k
2066B
White Magic
constructive algorithms
data structures
dp
greedy
implementation
+
1900
5.6k
2065A
Skibidus and Amog'u
brute force
constructive algorithms
greedy
implementation
strings
+
800
56.9k
2049C
MEX Cycle
brute force
constructive algorithms
greedy
implementation
+
1500
13.9k
2046F2
Yandex Cuneiform (Hard Version)
constructive algorithms
data structures
greedy
implementation
+
3500
110
2039B
Shohag Loves Strings
constructive algorithms
greedy
implementation
strings
+
1000
17.6k
2035E
Monster
binary search
brute force
constructive algorithms
greedy
implementation
math
ternary search
+
2300
2k
2034D
Darius' Wisdom
constructive algorithms
greedy
implementation
sortings
+
1600
6.8k
2034G1
Simurgh's Watch (Easy Version)
constructive algorithms
greedy
implementation
sortings
+
3500
80
2032B
Medians
constructive algorithms
greedy
implementation
math
+
1100
21.1k
2032D
Genokraken
constructive algorithms
data structures
graphs
greedy
implementation
interactive
trees
two pointers
+
1800
6.3k
2032E
Balanced
constructive algorithms
data structures
greedy
implementation
math
+
2400
1.4k
2028D
Alice's Adventures in Cards
constructive algorithms
data structures
dp
graphs
greedy
implementation
ternary search
+
2000
3.8k
2026C
Action Figures
binary search
brute force
constructive algorithms
data structures
greedy
implementation
+
1500
12.9k
2023C
C+K+S
constructive algorithms
dfs and similar
graphs
greedy
hashing
implementation
strings
+
2400
1.4k
2022A
Bus to Pénjamo
constructive algorithms
greedy
implementation
math
+
800
17.4k
2021C2
Adjust The Presentation (Hard Version)
constructive algorithms
data structures
greedy
implementation
sortings
+
1900
4.6k
2001D
Longest Max Min Subsequence
brute force
constructive algorithms
data structures
greedy
implementation
+
1900
6.6k
1998C
Perform Operations to Maximize Score
binary search
brute force
constructive algorithms
greedy
implementation
+
1900
7.2k
1995C
Squaring
brute force
constructive algorithms
greedy
implementation
math
number theory
+
1800
10.4k
1994A
Diverse Game
constructive algorithms
greedy
implementation
+
800
22.5k
1991G
Grid Reset
constructive algorithms
greedy
implementation
+
2700
758
1983B
Corner Twist
constructive algorithms
greedy
implementation
math
+
1200
18.6k
1981C
Turtle and an Incomplete Sequence
bitmasks
brute force
constructive algorithms
greedy
implementation
math
+
1800
6.4k
1980E
Permutation of Rows and Columns
constructive algorithms
data structures
greedy
hashing
implementation
math
matrices
sortings
+
1600
13.3k
1978C
Manhattan Permutations
constructive algorithms
data structures
greedy
implementation
math
+
1300
18k
1974D
Ingenuity-2
constructive algorithms
greedy
implementation
+
1400
18k
1973C
Cat, Fox and Double Maximum
constructive algorithms
greedy
implementation
math
sortings
+
1700
10k
1957B
A BIT of a Construction
bitmasks
constructive algorithms
greedy
implementation
+
1100
20.7k
1956D
Nene and the Mex Operator
bitmasks
brute force
constructive algorithms
divide and conquer
dp
greedy
implementation
math
+
2000
4.9k
1951E
No Palindromes
brute force
constructive algorithms
divide and conquer
greedy
hashing
implementation
math
strings
+
2000
4.6k
1948E
Clique Partition
brute force
constructive algorithms
graphs
greedy
implementation
+
2100
3.6k
1946D
Birthday Gift
bitmasks
brute force
constructive algorithms
greedy
implementation
+
1900
5.7k
1935F
Andrey's Tree
binary search
constructive algorithms
data structures
dfs and similar
dsu
greedy
implementation
trees
+
2800
634
1918A
Brick Wall
constructive algorithms
greedy
implementation
math
+
800
32.6k
1918B
Minimize Inversions
constructive algorithms
data structures
greedy
implementation
sortings
+
900
27.5k
1916C
Training Before the Olympiad
constructive algorithms
games
greedy
implementation
math
+
1200
20.1k
1907G
Lights
brute force
constructive algorithms
dfs and similar
graphs
greedy
implementation
+
2200
2.4k
1904D2
Set To Max (Hard Version)
constructive algorithms
data structures
divide and conquer
greedy
implementation
sortings
+
1800
5.8k
1900A
Cover in Water
constructive algorithms
greedy
implementation
strings
+
800
69.9k
1896F
Bracket Xoring
constructive algorithms
greedy
implementation
math
+
2600
1k
1889A
Qingshan Loves Strings 2
constructive algorithms
greedy
implementation
+
1300
15.5k
1868B1
Candy Party (Easy Version)
bitmasks
constructive algorithms
graphs
greedy
implementation
math
+
1700
8.4k
1868B2
Candy Party (Hard Version)
bitmasks
constructive algorithms
dp
greedy
implementation
math
+
2100
2.8k
1868D
Flower-like Pseudotree
constructive algorithms
graphs
greedy
implementation
trees
+
3000
418
1867D
Cyclic Operations
brute force
constructive algorithms
dfs and similar
graphs
greedy
implementation
+
1800
6.9k
1864A
Increasing and Decreasing
constructive algorithms
greedy
implementation
math
+
800
21.5k
1833G
Ksyusha and Chinchilla
constructive algorithms
dfs and similar
dp
dsu
greedy
implementation
trees
+
1800
6.5k
1832D2
Red-Blue Operations (Hard Version)
binary search
constructive algorithms
greedy
implementation
math
+
2400
2.4k
1799E
City Union
constructive algorithms
dfs and similar
dsu
geometry
greedy
implementation
math
+
2300
1.4k
1797A
Li Hua and Maze
constructive algorithms
flows
graphs
greedy
implementation
+
800
19.7k
1788B
Sum of Two Numbers
constructive algorithms
greedy
implementation
math
probabilities
+
1100
22.6k
1788F
XOR, Tree, and Queries
bitmasks
constructive algorithms
dfs and similar
dsu
graphs
greedy
implementation
trees
+
2500
1.2k
1781C
Equal Frequencies
brute force
constructive algorithms
greedy
implementation
sortings
strings
+
1600
11k
1774D
Same Count One
brute force
constructive algorithms
greedy
implementation
two pointers
+
1600
9.4k
1768C
Elemental Decompress
constructive algorithms
greedy
implementation
sortings
+
1300
15.9k
1761B
Elimination of a Ring
constructive algorithms
greedy
implementation
+
1000
14.8k
1746C
Permutation Operations
constructive algorithms
greedy
implementation
math
+
1300
14.2k
1736D
Equal Binary Subsequences
constructive algorithms
geometry
greedy
implementation
strings
+
2200
2.8k
1720E
Misha and Paintings
constructive algorithms
data structures
greedy
implementation
math
+
2700
1k
1709C
Recover an RBS
constructive algorithms
greedy
implementation
strings
+
1800
10.5k
1707A
Doremy's IQ
binary search
constructive algorithms
greedy
implementation
+
1600
15.7k
1705B
Mark the Dust Sweeper
constructive algorithms
greedy
implementation
+
900
25.8k
1698B
Rising Sand
constructive algorithms
greedy
implementation
+
800
21.5k
1697C
awoo's Favorite Problem
binary search
constructive algorithms
data structures
greedy
implementation
strings
two pointers
+
1400
15.9k
1697E
Coloring
brute force
combinatorics
constructive algorithms
dp
geometry
graphs
greedy
implementation
math
+
2400
1.5k
1696C
Fishingprince Plays With Array
constructive algorithms
greedy
implementation
math
+
1400
12.7k
1691B
Shoe Shuffling
constructive algorithms
greedy
implementation
two pointers
+
1000
37.6k
1684C
Column Swapping
brute force
constructive algorithms
greedy
implementation
sortings
+
1400
13.3k
1682C
LIS or Reverse LIS?
constructive algorithms
greedy
implementation
math
+
1400
16.6k
1672C
Unequal Array
constructive algorithms
greedy
implementation
+
1100
14.1k
1672D
Cyclic Rotation
constructive algorithms
greedy
implementation
two pointers
+
1700
7k
1660E
Matrix and Shifts
brute force
constructive algorithms
greedy
implementation
+
1600
8.2k
1659A
Red Versus Blue
constructive algorithms
greedy
implementation
math
+
1000
33.1k
1659D
Reverse Sort Sum
constructive algorithms
data structures
greedy
implementation
math
two pointers
+
1900
4.5k
1646F
Playing Around the Table
constructive algorithms
greedy
implementation
+
2900
707
1638D
Big Brush
constructive algorithms
data structures
greedy
implementation
+
2000
4.8k
1628A
Meximum Array
binary search
constructive algorithms
greedy
implementation
math
two pointers
+
1400
17.2k
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