cf
/
mirror
Problemset
Contests
Favorites
Profile
Tools
Settings
Problemset
Contests
Favorites
Profile
Complexity
Stress
Graph
Templates
Crawler
11,311
/11,320 captured
·
📄
81
PDFs
⊘
0
skipped
9 remaining
100%
Problemset
483 problems · filtered by 2 tags
Newest first
Oldest first
Rating ↑
Rating ↓
Most solved
Fewest solved
✓
#
Name
✎
Rating
↕
Solved
↕
2001D
Longest Max Min Subsequence
brute force
constructive algorithms
data structures
greedy
implementation
+
1900
6.6k
2000H
Ksyusha and the Loaded Set
binary search
brute force
data structures
implementation
+
2200
2.4k
1998E2
Eliminating Balls With Merging (Hard Version)
binary search
brute force
data structures
divide and conquer
greedy
implementation
+
2500
927
1997E
Level Up
binary search
brute force
data structures
divide and conquer
implementation
+
2200
3.9k
1996E
Decode
combinatorics
data structures
implementation
math
+
1600
12.9k
1988E
Range Minimum Sum
binary search
brute force
data structures
divide and conquer
implementation
+
2300
1.9k
1985H1
Maximize the Largest Component (Easy Version)
brute force
data structures
dfs and similar
dsu
graphs
implementation
+
1700
7.4k
1985H2
Maximize the Largest Component (Hard Version)
data structures
dfs and similar
dp
dsu
implementation
+
2200
2k
1982D
Beauty of the mountains
brute force
data structures
implementation
math
number theory
+
1700
10.2k
1980E
Permutation of Rows and Columns
constructive algorithms
data structures
greedy
hashing
implementation
math
matrices
sortings
+
1600
13.3k
1979E
Manhattan Triangle
binary search
constructive algorithms
data structures
geometry
implementation
two pointers
+
2400
1.9k
1978C
Manhattan Permutations
constructive algorithms
data structures
greedy
implementation
math
+
1300
18k
1978D
Elections
data structures
greedy
implementation
math
+
1600
13.9k
1978E
Computing Machine
brute force
data structures
dp
greedy
implementation
+
2000
4.7k
1976D
Invertible Bracket Sequences
binary search
combinatorics
data structures
divide and conquer
implementation
two pointers
+
2000
5.9k
1975E
Chain Queries
binary search
data structures
dfs and similar
implementation
trees
+
2100
2.9k
1974F
Cutting Game
binary search
brute force
data structures
implementation
sortings
two pointers
+
1900
4.5k
1967F
Next and Prev
brute force
data structures
implementation
+
3200
104
1955B
Progressive Square
constructive algorithms
data structures
implementation
sortings
+
1000
32.8k
1954E
Chain Reaction
binary search
data structures
dsu
greedy
implementation
math
number theory
+
2200
3k
1945G
Cook and Porridge
binary search
constructive algorithms
data structures
implementation
+
2500
946
1942D
Learning to Paint
binary search
data structures
dfs and similar
dp
greedy
implementation
sortings
+
2100
3.4k
1942F
Farmer John's Favorite Function
brute force
data structures
implementation
math
+
2700
1k
1936B
Pinball
binary search
data structures
implementation
math
two pointers
+
2000
3.6k
1936C
Pokémon Arena
data structures
graphs
greedy
implementation
shortest paths
sortings
+
2400
1.8k
1935F
Andrey's Tree
binary search
constructive algorithms
data structures
dfs and similar
dsu
greedy
implementation
trees
+
2800
634
1932C
LR-remainders
brute force
data structures
implementation
math
two pointers
+
1400
19.3k
1928F
Digital Patterns
combinatorics
data structures
implementation
math
+
2900
479
1927F
Microcycle
data structures
dfs and similar
dsu
graphs
greedy
implementation
sortings
trees
+
1900
5.6k
1926E
Vlad and an Odd Ordering
binary search
bitmasks
data structures
dp
implementation
math
number theory
+
1500
15.2k
1924B
Space Harbour
data structures
implementation
math
sortings
+
2100
3.4k
1922D
Berserk Monsters
brute force
data structures
dsu
implementation
math
+
1900
6.9k
1921F
Sum of Progression
brute force
data structures
dp
implementation
math
+
1900
5.2k
1921G
Mischievous Shooter
brute force
data structures
divide and conquer
dp
implementation
+
2200
1.5k
1918B
Minimize Inversions
constructive algorithms
data structures
greedy
implementation
sortings
+
900
27.5k
1918D
Blocking Elements
binary search
data structures
dp
implementation
two pointers
+
1900
6.4k
1917D
Yet Another Inversions Problem
combinatorics
data structures
dp
implementation
math
number theory
+
2300
2.1k
1912A
Accumulator Apex
data structures
implementation
sortings
+
1900
3.1k
1907B
YetnotherrokenKeoard
data structures
implementation
strings
+
1000
31k
1905D
Cyclic MEX
data structures
implementation
math
two pointers
+
2000
4.8k
1904D2
Set To Max (Hard Version)
constructive algorithms
data structures
divide and conquer
greedy
implementation
sortings
+
1800
5.8k
1904E
Tree Queries
data structures
dfs and similar
graphs
implementation
trees
+
2500
1.4k
1904F
Beautiful Tree
data structures
dfs and similar
graphs
implementation
trees
+
2800
581
1902D
Robot Queries
binary search
data structures
dp
implementation
+
1900
5.4k
1902F
Trees and XOR Queries Again
data structures
dfs and similar
divide and conquer
graphs
implementation
math
trees
+
2400
1.5k
1900F
Local Deletions
binary search
data structures
implementation
+
2800
370
1878G
wxhtzdy ORO Tree
binary search
bitmasks
brute force
data structures
dfs and similar
implementation
trees
+
2300
1.5k
1870C
Colorful Table
binary search
data structures
dp
implementation
math
two pointers
+
1300
13.3k
1868F
LIS?
data structures
greedy
implementation
+
3500
140
1866K
Keen Tree Calculation
binary search
data structures
dp
geometry
graphs
implementation
trees
+
2500
585
1864F
Exotic Queries
data structures
implementation
sortings
+
2300
1.7k
1862C
Flower City Fence
binary search
data structures
implementation
sortings
+
1100
23.3k
1861C
Queries for the Array
data structures
dfs and similar
implementation
strings
trees
+
1600
12.5k
1860F
Evaluate RBS
data structures
geometry
implementation
math
sortings
+
2900
350
1851G
Vlad and the Mountains
binary search
data structures
dsu
graphs
implementation
sortings
trees
two pointers
+
2000
4.2k
1850G
The Morning Star
combinatorics
data structures
geometry
implementation
math
sortings
+
1500
15.8k
1848B
Vika and the Bridge
binary search
data structures
greedy
implementation
math
sortings
+
1200
26.1k
1847D
Professor Higashikata
data structures
dsu
greedy
implementation
strings
+
1900
4.3k
1844G
Tree Weights
bitmasks
constructive algorithms
data structures
dfs and similar
implementation
math
matrices
number theory
trees
+
3000
1.2k
1840E
Character Blocking
data structures
hashing
implementation
+
1600
9.5k
1837F
Editorial for Two
binary search
data structures
greedy
implementation
+
2400
2.7k
1834D
Survey in Class
brute force
data structures
greedy
implementation
sortings
+
1900
5.6k
1834E
MEX of LCM
binary search
data structures
implementation
math
number theory
+
2300
2.9k
1833F
Ira and Flamenco
combinatorics
constructive algorithms
data structures
implementation
math
sortings
two pointers
+
1700
10.6k
1829G
Hits Different
data structures
dp
implementation
math
+
1600
15.9k
1826E
Walk the Runway
bitmasks
brute force
data structures
dp
graphs
implementation
sortings
+
2400
2k
1809F
Traveling in Berland
binary search
data structures
graphs
greedy
implementation
+
2500
972
1807D
Odd Queries
data structures
implementation
+
900
60.9k
1807G1
Subsequence Addition (Easy Version)
brute force
data structures
dp
greedy
implementation
sortings
+
1100
22.7k
1804G
Flow Control
data structures
dsu
implementation
+
3500
254
1799A
Recent Actions
data structures
greedy
implementation
math
+
800
12.4k
1798B
Three Sevens
brute force
data structures
greedy
implementation
+
1000
19k
1797D
Li Hua and Tree
brute force
data structures
dfs and similar
dp
implementation
trees
+
1900
4.7k
1795C
Tea Tasting
binary search
data structures
implementation
+
1500
18.9k
1794E
Labeling the Tree with Distances
data structures
dp
greedy
hashing
implementation
trees
+
2400
1.6k
1793F
Rebrending
brute force
data structures
divide and conquer
implementation
+
2600
1.7k
1783G
Weighed Tree Radius
data structures
divide and conquer
implementation
trees
+
2800
625
1781E
Rectangle Shrinking
binary search
brute force
data structures
greedy
implementation
two pointers
+
2300
1.5k
1774F1
Magician and Pigs (Easy Version)
brute force
data structures
implementation
+
2400
1.3k
1774F2
Magician and Pigs (Hard Version)
binary search
brute force
data structures
implementation
+
2700
921
1770D
Koxia and Game
constructive algorithms
data structures
dfs and similar
dsu
flows
games
graph matchings
graphs
implementation
+
2000
4.5k
1765L
Project Manager
brute force
data structures
implementation
+
2400
693
1763B
Incinerate
binary search
brute force
data structures
implementation
math
sortings
+
1200
16.6k
1760C
Advantage
data structures
implementation
sortings
+
800
44.6k
1749C
Number Game
binary search
data structures
games
greedy
implementation
+
1400
15.9k
1748C
Zero-Sum Prefixes
brute force
data structures
dp
greedy
implementation
+
1600
13.3k
1746G
Olympiad Training
binary search
data structures
dp
flows
geometry
implementation
sortings
+
3500
118
1732D1
Balance (Easy version)
brute force
data structures
implementation
number theory
+
1500
10k
1722C
Word Game
data structures
implementation
+
800
37k
1722E
Counting Rectangles
brute force
data structures
dp
implementation
+
1600
13.7k
1720E
Misha and Paintings
constructive algorithms
data structures
greedy
implementation
math
+
2700
1k
1719C
Fighting Tournament
binary search
data structures
implementation
two pointers
+
1400
14.5k
1716C
Robot in a Hallway
data structures
dp
greedy
implementation
ternary search
+
2000
4.7k
1715C
Monoblock
combinatorics
data structures
implementation
math
+
1700
10.6k
1714B
Remove Prefix
data structures
greedy
implementation
+
800
34.3k
1710B
Rain
binary search
brute force
data structures
geometry
greedy
implementation
math
+
2100
2.8k
1709B
Also Try Minecraft
data structures
dp
implementation
+
900
26.3k
1707B
Difference Array
brute force
data structures
implementation
sortings
+
1900
6.5k
1703B
ICPC Balloons
data structures
implementation
+
800
68.3k
1701F
Points
combinatorics
data structures
implementation
math
matrices
+
2500
1.2k
←
1
2
3
4
5
→
Jump to
Go
of 5
showing 101–200 of 483