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219 problems · filtered by 2 tags
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Name
✎
Rating
↕
Solved
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2244C
Stepan and Permutation
constructive algorithms
dfs and similar
dsu
greedy
math
number theory
sortings
+
unrated
15.6k
2224B
Zhily and Mex and Max
constructive algorithms
greedy
math
sortings
+
1200
9k
2222D
Permutation Construction
constructive algorithms
data structures
sortings
+
1800
4k
2217E
Definitely Larger
binary search
constructive algorithms
data structures
graphs
greedy
sortings
+
2000
2.5k
2215E
Star Map
constructive algorithms
data structures
geometry
greedy
sortings
+
2700
217
2191B
MEX Reordering
constructive algorithms
sortings
+
1000
20.9k
2181E
Elevator Against Humanity
brute force
constructive algorithms
greedy
sortings
+
2900
160
2173E
Shiro's Mirror Duel
constructive algorithms
greedy
interactive
probabilities
sortings
+
2200
1.6k
2167C
Isamatdin and His Magic Wand!
constructive algorithms
greedy
implementation
sortings
+
800
37.1k
2161C
Loyalty
constructive algorithms
greedy
sortings
two pointers
+
1200
13.3k
2153C
Symmetrical Polygons
constructive algorithms
geometry
greedy
implementation
sortings
+
1500
12.3k
2148D
Destruction of the Dandelion Fields
constructive algorithms
greedy
sortings
+
1000
27.9k
2129A
Double Perspective
constructive algorithms
dp
dsu
graphs
greedy
sortings
+
1300
18.3k
2128B
Deque Process
constructive algorithms
greedy
sortings
two pointers
+
1100
22.1k
2125A
Difficult Contest
constructive algorithms
implementation
sortings
strings
+
800
28.5k
2122C
Manhattan Pairs
constructive algorithms
geometry
greedy
math
sortings
+
1700
9.7k
2120C
Divine Tree
constructive algorithms
greedy
math
sortings
trees
+
1400
13k
2111D
Creating a Schedule
constructive algorithms
data structures
greedy
implementation
sortings
+
1400
12.3k
2081D
MST in Modulo Graph
constructive algorithms
dsu
graphs
greedy
math
number theory
sortings
trees
+
2600
1.2k
2077A
Breach of Faith
constructive algorithms
greedy
math
sortings
+
1500
14.9k
2071C
Trapmigiano Reggiano
constructive algorithms
data structures
dfs and similar
dp
greedy
sortings
trees
+
1700
9.9k
2069E
A, B, AB and BA
constructive algorithms
greedy
sortings
strings
+
2300
2k
2063B
Subsequence Update
constructive algorithms
data structures
greedy
sortings
+
1100
23.6k
2062F
Traveling Salescat
constructive algorithms
dp
geometry
graphs
greedy
math
sortings
+
2900
633
2059A
Milya and Two Arrays
constructive algorithms
greedy
sortings
+
800
29.4k
2059C
Customer Service
brute force
constructive algorithms
graph matchings
greedy
math
sortings
+
1600
12.8k
2055B
Crafting
constructive algorithms
greedy
sortings
+
1000
27.7k
2055E
Haystacks
brute force
constructive algorithms
data structures
greedy
sortings
+
2800
496
2039H1
Cool Swap Walk (Easy Version)
constructive algorithms
implementation
sortings
+
3500
105
2039H2
Cool Swap Walk (Hard Version)
constructive algorithms
implementation
sortings
+
3500
100
2034D
Darius' Wisdom
constructive algorithms
greedy
implementation
sortings
+
1600
6.8k
2034G1
Simurgh's Watch (Easy Version)
constructive algorithms
greedy
implementation
sortings
+
3500
80
2030A
A Gift From Orangutan
constructive algorithms
greedy
math
sortings
+
800
27.8k
2024B
Buying Lemonade
binary search
constructive algorithms
sortings
+
1100
17.3k
2023A
Concatenation of Arrays
constructive algorithms
greedy
math
sortings
+
1300
16.9k
2021C2
Adjust The Presentation (Hard Version)
constructive algorithms
data structures
greedy
implementation
sortings
+
1900
4.6k
2003C
Turtle and Good Pairs
constructive algorithms
greedy
sortings
strings
+
1200
22k
1992A
Only Pluses
brute force
constructive algorithms
greedy
math
sortings
+
800
50.1k
1984G
Magic Trick II
constructive algorithms
implementation
sortings
+
3200
305
1983D
Swap Dilemma
constructive algorithms
data structures
divide and conquer
greedy
math
sortings
+
1700
11.5k
1980E
Permutation of Rows and Columns
constructive algorithms
data structures
greedy
hashing
implementation
math
matrices
sortings
+
1600
13.3k
1978A
Alice and Books
constructive algorithms
greedy
sortings
+
800
28.8k
1973C
Cat, Fox and Double Maximum
constructive algorithms
greedy
implementation
math
sortings
+
1700
10k
1956F
Nene and the Passing Game
constructive algorithms
data structures
dsu
graphs
sortings
+
3000
747
1955B
Progressive Square
constructive algorithms
data structures
implementation
sortings
+
1000
32.8k
1952J
Help, what does it mean to be "Based"
*special
brute force
constructive algorithms
expression parsing
implementation
sortings
+
unrated
910
1940B
Three Arrays
*special
constructive algorithms
implementation
sortings
+
unrated
275
1940D
Almost Certainly
*special
constructive algorithms
data structures
sortings
+
unrated
177
1935C
Messenger in MAC
binary search
brute force
constructive algorithms
data structures
dp
greedy
sortings
+
1800
9.9k
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
greedy
math
number theory
sortings
+
1200
23.9k
1930C
Lexicographically Largest
binary search
constructive algorithms
data structures
greedy
sortings
+
1700
8.2k
1929A
Sasha and the Beautiful Array
constructive algorithms
greedy
math
sortings
+
800
35.3k
1922B
Forming Triangles
combinatorics
constructive algorithms
math
sortings
+
1200
23.7k
1919D
01 Tree
constructive algorithms
data structures
dsu
greedy
sortings
trees
+
2100
4.6k
1918B
Minimize Inversions
constructive algorithms
data structures
greedy
implementation
sortings
+
900
27.5k
1918E
ace5 and Task Order
constructive algorithms
divide and conquer
implementation
interactive
probabilities
sortings
+
2200
2.1k
1909C
Heavy Intervals
constructive algorithms
data structures
dsu
greedy
math
sortings
+
1400
13.4k
1904D2
Set To Max (Hard Version)
constructive algorithms
data structures
divide and conquer
greedy
implementation
sortings
+
1800
5.8k
1896C
Matching Arrays
binary search
constructive algorithms
greedy
sortings
+
1400
11.8k
1896G
Pepe Racing
constructive algorithms
implementation
interactive
sortings
+
3200
451
1893B
Neutral Tonality
constructive algorithms
greedy
sortings
two pointers
+
1700
11.8k
1891A
Sorting with Twos
constructive algorithms
sortings
+
800
20.6k
1891C
Smilo and Monsters
binary search
constructive algorithms
greedy
sortings
two pointers
+
1500
21.5k
1889B
Doremy's Connecting Plan
constructive algorithms
greedy
math
sortings
+
1700
8.7k
1886E
I Wanna be the Team Leader
bitmasks
constructive algorithms
dp
greedy
math
sortings
two pointers
+
2400
1.9k
1876C
Autosynthesis
constructive algorithms
dfs and similar
graphs
greedy
sortings
+
2100
2.8k
1867A
green_gold_dog, array and permutation
constructive algorithms
sortings
+
800
21.2k
1864B
Swap and Reverse
constructive algorithms
greedy
sortings
strings
+
1100
16.8k
1859B
Olya and Game with Arrays
constructive algorithms
greedy
math
sortings
+
1000
46.7k
1852B
Imbalanced Arrays
constructive algorithms
graphs
greedy
math
sortings
two pointers
+
1800
5.5k
1846C
Rudolf and the Another Competition
constructive algorithms
data structures
dp
greedy
sortings
+
1200
21.8k
1844F2
Min Cost Permutation (Hard Version)
binary search
constructive algorithms
data structures
greedy
math
sortings
+
2800
506
1833F
Ira and Flamenco
combinatorics
constructive algorithms
data structures
implementation
math
sortings
two pointers
+
1700
10.6k
1814C
Search in Parallel
constructive algorithms
greedy
sortings
+
1500
12.6k
1783A
Make it Beautiful
constructive algorithms
math
sortings
+
800
52.5k
1781C
Equal Frequencies
brute force
constructive algorithms
greedy
implementation
sortings
strings
+
1600
11k
1779D
Boris and His Amazing Haircut
constructive algorithms
data structures
dp
dsu
greedy
sortings
+
1700
9.2k
1779E
Anya's Simultaneous Exhibition
constructive algorithms
graphs
greedy
interactive
sortings
+
2400
2.1k
1772F
Copy of a Copy of a Copy
constructive algorithms
dfs and similar
graphs
implementation
sortings
+
2000
2.9k
1768C
Elemental Decompress
constructive algorithms
greedy
implementation
sortings
+
1300
15.9k
1764F
Doremy's Experimental Tree
brute force
constructive algorithms
dfs and similar
dsu
sortings
trees
+
2500
1.3k
1762B
Make Array Good
constructive algorithms
implementation
number theory
sortings
+
1100
18.7k
1762G
Unequal Adjacent Elements
constructive algorithms
sortings
+
3100
157
1740C
Bricks and Bags
constructive algorithms
games
greedy
sortings
+
1400
12.4k
1740G
Dangerous Laser Power
constructive algorithms
dsu
sortings
+
3100
403
1738B
Prefix Sum Addicts
constructive algorithms
greedy
math
sortings
+
1200
19.1k
1733C
Parity Shuffle Sorting
constructive algorithms
sortings
+
1300
17.2k
1713B
Optimal Reduction
constructive algorithms
sortings
+
1000
22.8k
1705D
Mark and Lightbulbs
combinatorics
constructive algorithms
greedy
math
sortings
+
1800
7.2k
1688B
Patchouli's Magical Talisman
bitmasks
constructive algorithms
greedy
sortings
+
800
19.2k
1687B
Railway System
constructive algorithms
graphs
greedy
interactive
sortings
+
1700
4.2k
1685A
Circular Local MiniMax
constructive algorithms
greedy
sortings
+
1100
18.7k
1684C
Column Swapping
brute force
constructive algorithms
greedy
implementation
sortings
+
1400
13.3k
1684D
Traps
constructive algorithms
greedy
sortings
+
1700
10.9k
1682B
AND Sorting
bitmasks
constructive algorithms
sortings
+
1100
27.9k
1682E
Unordered Swaps
constructive algorithms
dfs and similar
graphs
greedy
math
sortings
trees
+
2700
777
1674D
A-B-C Sort
constructive algorithms
implementation
sortings
+
1200
17.9k
1665B
Array Cloning Technique
constructive algorithms
greedy
sortings
+
900
35.2k
1656C
Make Equal With Mod
constructive algorithms
math
number theory
sortings
+
1200
21.2k
1656F
Parametric MST
binary search
constructive algorithms
graphs
greedy
math
sortings
+
2600
1.3k
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